diff options
Diffstat (limited to 'gnu/usr.bin/cc/cc1plus/decl2.c')
| -rw-r--r-- | gnu/usr.bin/cc/cc1plus/decl2.c | 3102 |
1 files changed, 3102 insertions, 0 deletions
diff --git a/gnu/usr.bin/cc/cc1plus/decl2.c b/gnu/usr.bin/cc/cc1plus/decl2.c new file mode 100644 index 0000000..2b9f8a7 --- /dev/null +++ b/gnu/usr.bin/cc/cc1plus/decl2.c @@ -0,0 +1,3102 @@ +/* Process declarations and variables for C compiler. + Copyright (C) 1988, 1992, 1993 Free Software Foundation, Inc. + Hacked by Michael Tiemann (tiemann@cygnus.com) + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +/* Process declarations and symbol lookup for C front end. + Also constructs types; the standard scalar types at initialization, + and structure, union, array and enum types when they are declared. */ + +/* ??? not all decl nodes are given the most useful possible + line numbers. For example, the CONST_DECLs for enum values. */ + +#include "config.h" +#include <stdio.h> +#include "tree.h" +#include "rtl.h" +#include "flags.h" +#include "cp-tree.h" +#include "decl.h" +#include "lex.h" + +extern tree grokdeclarator (); +extern tree get_file_function_name (); +extern tree cleanups_this_call; +static void grok_function_init (); + +/* A list of virtual function tables we must make sure to write out. */ +tree pending_vtables; + +/* A list of static class variables. This is needed, because a + static class variable can be declared inside the class without + an initializer, and then initialized, staticly, outside the class. */ +tree pending_statics; + +/* A list of functions which were declared inline, but which we + may need to emit outline anyway. */ +static tree saved_inlines; + +/* Used to help generate temporary names which are unique within + a function. Reset to 0 by start_function. */ + +static int temp_name_counter; + +/* Same, but not reset. Local temp variables and global temp variables + can have the same name. */ +static int global_temp_name_counter; + +/* Flag used when debugging spew.c */ + +extern int spew_debug; + +/* C (and C++) language-specific option variables. */ + +/* Nonzero means allow type mismatches in conditional expressions; + just make their values `void'. */ + +int flag_cond_mismatch; + +/* Nonzero means give `double' the same size as `float'. */ + +int flag_short_double; + +/* Nonzero means don't recognize the keyword `asm'. */ + +int flag_no_asm; + +/* Nonzero means don't recognize the non-ANSI builtin functions. */ + +int flag_no_builtin; + +/* Nonzero means do some things the same way PCC does. */ + +int flag_traditional; + +/* Nonzero means to treat bitfields as unsigned unless they say `signed'. */ + +int flag_signed_bitfields = 1; + +/* Nonzero means handle `#ident' directives. 0 means ignore them. */ + +int flag_no_ident = 0; + +/* Nonzero means disable GNU extensions. */ + +int flag_ansi = 0; + +/* Nonzero means do emit exported implementations of functions even if + they can be inlined. */ + +int flag_implement_inlines = 1; + +/* Nonzero means do emit exported implementations of templates, instead of + multiple static copies in each file that needs a definition. */ + +int flag_external_templates = 0; + +/* Nonzero means that the decision to emit or not emit the implementation of a + template depends on where the template is instantiated, rather than where + it is defined. */ + +int flag_alt_external_templates = 0; + +/* Nonzero means that implicit instantiations will be emitted if needed. */ + +int flag_implicit_templates = 1; + +/* Nonzero means warn about implicit declarations. */ + +int warn_implicit = 1; + +/* Nonzero means warn when all ctors or dtors are private, and the class + has no friends. */ + +int warn_ctor_dtor_privacy = 1; + +/* True if we want to implement vtbvales using "thunks". + The default is off now, but will be on later. + + Also causes output of vtables to be controlled by whether + we seen the class's first non-inline virtual function. */ +int flag_vtable_thunks = 0; + +/* Nonzero means give string constants the type `const char *' + to get extra warnings from them. These warnings will be too numerous + to be useful, except in thoroughly ANSIfied programs. */ + +int warn_write_strings; + +/* Nonzero means warn about pointer casts that can drop a type qualifier + from the pointer target type. */ + +int warn_cast_qual; + +/* Nonzero means warn that dbx info for template class methods isn't fully + supported yet. */ + +int warn_template_debugging; + +/* Warn about traditional constructs whose meanings changed in ANSI C. */ + +int warn_traditional; + +/* Nonzero means warn about sizeof(function) or addition/subtraction + of function pointers. */ + +int warn_pointer_arith; + +/* Nonzero means warn for non-prototype function decls + or non-prototyped defs without previous prototype. */ + +int warn_strict_prototypes; + +/* Nonzero means warn for any function def without prototype decl. */ + +int warn_missing_prototypes; + +/* Nonzero means warn about multiple (redundant) decls for the same single + variable or function. */ + +int warn_redundant_decls; + +/* Warn if initializer is not completely bracketed. */ + +int warn_missing_braces; + +/* Warn about *printf or *scanf format/argument anomalies. */ + +int warn_format; + +/* Warn about a subscript that has type char. */ + +int warn_char_subscripts; + +/* Warn if a type conversion is done that might have confusing results. */ + +int warn_conversion; + +/* Warn if adding () is suggested. */ + +int warn_parentheses = 1; + +/* Non-zero means warn in function declared in derived class has the + same name as a virtual in the base class, but fails to match the + type signature of any virtual function in the base class. */ +int warn_overloaded_virtual; + +/* Non-zero means warn when declaring a class that has a non virtual + destructor, when it really ought to have a virtual one. */ +int warn_nonvdtor; + +/* Non-zero means warn when a function is declared extern and later inline. */ +int warn_extern_inline; + +/* Nonzero means `$' can be in an identifier. + See cccp.c for reasons why this breaks some obscure ANSI C programs. */ + +#ifndef DOLLARS_IN_IDENTIFIERS +#define DOLLARS_IN_IDENTIFIERS 1 +#endif +int dollars_in_ident = DOLLARS_IN_IDENTIFIERS; + +/* Nonzero for -fno-strict-prototype switch: do not consider empty + argument prototype to mean function takes no arguments. */ + +int strict_prototype = 1; +int strict_prototypes_lang_c, strict_prototypes_lang_cplusplus = 1; + +/* Nonzero means that labels can be used as first-class objects */ + +int flag_labels_ok; + +/* Non-zero means to collect statistics which might be expensive + and to print them when we are done. */ +int flag_detailed_statistics; + +/* C++ specific flags. */ +/* Nonzero for -fall-virtual: make every member function (except + constructors) lay down in the virtual function table. Calls + can then either go through the virtual function table or not, + depending. */ + +int flag_all_virtual; + +/* Zero means that `this' is a *const. This gives nice behavior in the + 2.0 world. 1 gives 1.2-compatible behavior. 2 gives Spring behavior. + -2 means we're constructing an object and it has fixed type. */ + +int flag_this_is_variable; + +/* Nonzero means memoize our member lookups. */ + +int flag_memoize_lookups; int flag_save_memoized_contexts; + +/* 3 means write out only virtuals function tables `defined' + in this implementation file. + 2 means write out only specific virtual function tables + and give them (C) public access. + 1 means write out virtual function tables and give them + (C) public access. + 0 means write out virtual function tables and give them + (C) static access (default). + -1 means declare virtual function tables extern. */ + +int write_virtuals; + +/* Nonzero means we should attempt to elide constructors when possible. */ + +int flag_elide_constructors; + +/* Nonzero means recognize and handle exception handling constructs. + Use ansi syntax and semantics. WORK IN PROGRESS! */ + +int flag_handle_exceptions; + +/* Nonzero means recognize and handle signature language constructs. */ + +int flag_handle_signatures; + +/* Nonzero means that member functions defined in class scope are + inline by default. */ + +int flag_default_inline = 1; + +/* Controls whether enums and ints freely convert. + 1 means with complete freedom. + 0 means enums can convert to ints, but not vice-versa. */ +int flag_int_enum_equivalence; + +/* Controls whether compiler is operating under LUCID's Cadillac + system. 1 means yes, 0 means no. */ +int flag_cadillac; + +/* Controls whether compiler generates code to build objects + that can be collected when they become garbage. */ +int flag_gc; + +/* Controls whether compiler generates 'dossiers' that give + run-time type information. */ +int flag_dossier; + +/* Nonzero if we wish to output cross-referencing information + for the GNU class browser. */ +extern int flag_gnu_xref; + +/* Nonzero if compiler can make `reasonable' assumptions about + references and objects. For example, the compiler must be + conservative about the following and not assume that `a' is nonnull: + + obj &a = g (); + a.f (2); + + In general, it is `reasonable' to assume that for many programs, + and better code can be generated in that case. */ + +int flag_assume_nonnull_objects; + +/* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes) + objects. */ +int flag_huge_objects; + +/* Nonzero if we want to conserve space in the .o files. We do this + by putting uninitialized data and runtime initialized data into + .common instead of .data at the expense of not flaging multiple + definitions. */ +int flag_conserve_space; + +/* Table of language-dependent -f options. + STRING is the option name. VARIABLE is the address of the variable. + ON_VALUE is the value to store in VARIABLE + if `-fSTRING' is seen as an option. + (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ + +static struct { char *string; int *variable; int on_value;} lang_f_options[] = +{ + {"signed-char", &flag_signed_char, 1}, + {"unsigned-char", &flag_signed_char, 0}, + {"signed-bitfields", &flag_signed_bitfields, 1}, + {"unsigned-bitfields", &flag_signed_bitfields, 0}, + {"short-enums", &flag_short_enums, 1}, + {"short-double", &flag_short_double, 1}, + {"cond-mismatch", &flag_cond_mismatch, 1}, + {"asm", &flag_no_asm, 0}, + {"builtin", &flag_no_builtin, 0}, + {"ident", &flag_no_ident, 0}, + {"labels-ok", &flag_labels_ok, 1}, + {"stats", &flag_detailed_statistics, 1}, + {"this-is-variable", &flag_this_is_variable, 1}, + {"strict-prototype", &strict_prototypes_lang_cplusplus, 1}, + {"all-virtual", &flag_all_virtual, 1}, + {"memoize-lookups", &flag_memoize_lookups, 1}, + {"elide-constructors", &flag_elide_constructors, 1}, + {"handle-exceptions", &flag_handle_exceptions, 1}, + {"handle-signatures", &flag_handle_signatures, 1}, + {"default-inline", &flag_default_inline, 1}, + {"dollars-in-identifiers", &dollars_in_ident, 1}, + {"enum-int-equiv", &flag_int_enum_equivalence, 1}, + {"gc", &flag_gc, 1}, + {"dossier", &flag_dossier, 1}, + {"xref", &flag_gnu_xref, 1}, + {"nonnull-objects", &flag_assume_nonnull_objects, 1}, + {"implement-inlines", &flag_implement_inlines, 1}, + {"external-templates", &flag_external_templates, 1}, + {"implicit-templates", &flag_implicit_templates, 1}, + {"huge-objects", &flag_huge_objects, 1}, + {"conserve-space", &flag_conserve_space, 1}, + {"vtable-thunks", &flag_vtable_thunks, 1}, + {"short-temps", &flag_short_temps, 1}, +}; + +/* Decode the string P as a language-specific option. + Return 1 if it is recognized (and handle it); + return 0 if not recognized. */ + +int +lang_decode_option (p) + char *p; +{ + if (!strcmp (p, "-ftraditional") || !strcmp (p, "-traditional")) + flag_traditional = 1, dollars_in_ident = 1, flag_writable_strings = 1, + flag_this_is_variable = 1; + /* The +e options are for cfront compatibility. They come in as + `-+eN', to kludge around gcc.c's argument handling. */ + else if (p[0] == '-' && p[1] == '+' && p[2] == 'e') + { + int old_write_virtuals = write_virtuals; + if (p[3] == '1') + write_virtuals = 1; + else if (p[3] == '0') + write_virtuals = -1; + else if (p[3] == '2') + write_virtuals = 2; + else error ("invalid +e option"); + if (old_write_virtuals != 0 + && write_virtuals != old_write_virtuals) + error ("conflicting +e options given"); + } + else if (p[0] == '-' && p[1] == 'f') + { + /* Some kind of -f option. + P's value is the option sans `-f'. + Search for it in the table of options. */ + int found = 0, j; + + p += 2; + /* Try special -f options. */ + + if (!strcmp (p, "save-memoized")) + { + flag_memoize_lookups = 1; + flag_save_memoized_contexts = 1; + found = 1; + } + if (!strcmp (p, "no-save-memoized")) + { + flag_memoize_lookups = 0; + flag_save_memoized_contexts = 0; + found = 1; + } + else if (! strncmp (p, "cadillac", 8)) + { + flag_cadillac = atoi (p+9); + found = 1; + } + else if (! strncmp (p, "no-cadillac", 11)) + { + flag_cadillac = 0; + found = 1; + } + else if (! strcmp (p, "gc")) + { + flag_gc = 1; + /* This must come along for the ride. */ + flag_dossier = 1; + found = 1; + } + else if (! strcmp (p, "no-gc")) + { + flag_gc = 0; + /* This must come along for the ride. */ + flag_dossier = 0; + found = 1; + } + else if (! strcmp (p, "alt-external-templates")) + { + flag_external_templates = 1; + flag_alt_external_templates = 1; + found = 1; + } + else if (! strcmp (p, "no-alt-external-templates")) + { + flag_alt_external_templates = 0; + found = 1; + } + else for (j = 0; + !found && j < sizeof (lang_f_options) / sizeof (lang_f_options[0]); + j++) + { + if (!strcmp (p, lang_f_options[j].string)) + { + *lang_f_options[j].variable = lang_f_options[j].on_value; + /* A goto here would be cleaner, + but breaks the vax pcc. */ + found = 1; + } + if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' + && ! strcmp (p+3, lang_f_options[j].string)) + { + *lang_f_options[j].variable = ! lang_f_options[j].on_value; + found = 1; + } + } + return found; + } + else if (p[0] == '-' && p[1] == 'W') + { + int setting = 1; + + /* The -W options control the warning behavior of the compiler. */ + p += 2; + + if (p[0] == 'n' && p[1] == 'o' && p[2] == '-') + setting = 0, p += 3; + + if (!strcmp (p, "implicit")) + warn_implicit = setting; + else if (!strcmp (p, "return-type")) + warn_return_type = setting; + else if (!strcmp (p, "ctor-dtor-privacy")) + warn_ctor_dtor_privacy = setting; + else if (!strcmp (p, "write-strings")) + warn_write_strings = setting; + else if (!strcmp (p, "cast-qual")) + warn_cast_qual = setting; + else if (!strcmp (p, "traditional")) + warn_traditional = setting; + else if (!strcmp (p, "char-subscripts")) + warn_char_subscripts = setting; + else if (!strcmp (p, "pointer-arith")) + warn_pointer_arith = setting; + else if (!strcmp (p, "strict-prototypes")) + warn_strict_prototypes = setting; + else if (!strcmp (p, "missing-prototypes")) + warn_missing_prototypes = setting; + else if (!strcmp (p, "redundant-decls")) + warn_redundant_decls = setting; + else if (!strcmp (p, "missing-braces")) + warn_missing_braces = setting; + else if (!strcmp (p, "format")) + warn_format = setting; + else if (!strcmp (p, "conversion")) + warn_conversion = setting; + else if (!strcmp (p, "parentheses")) + warn_parentheses = setting; + else if (!strcmp (p, "non-virtual-dtor")) + warn_nonvdtor = setting; + else if (!strcmp (p, "extern-inline")) + warn_extern_inline = setting; + else if (!strcmp (p, "comment")) + ; /* cpp handles this one. */ + else if (!strcmp (p, "comments")) + ; /* cpp handles this one. */ + else if (!strcmp (p, "trigraphs")) + ; /* cpp handles this one. */ + else if (!strcmp (p, "import")) + ; /* cpp handles this one. */ + else if (!strcmp (p, "all")) + { + extra_warnings = setting; + warn_return_type = setting; + warn_unused = setting; + warn_implicit = setting; + warn_ctor_dtor_privacy = setting; + warn_switch = setting; + warn_format = setting; + warn_missing_braces = setting; + warn_extern_inline = setting; + warn_nonvdtor = setting; + /* We save the value of warn_uninitialized, since if they put + -Wuninitialized on the command line, we need to generate a + warning about not using it without also specifying -O. */ + if (warn_uninitialized != 1) + warn_uninitialized = (setting ? 2 : 0); + warn_template_debugging = setting; + } + + else if (!strcmp (p, "overloaded-virtual")) + warn_overloaded_virtual = setting; + else return 0; + } + else if (!strcmp (p, "-ansi")) + flag_no_asm = 1, dollars_in_ident = 0, flag_ansi = 1; +#ifdef SPEW_DEBUG + /* Undocumented, only ever used when you're invoking cc1plus by hand, since + it's probably safe to assume no sane person would ever want to use this + under normal circumstances. */ + else if (!strcmp (p, "-spew-debug")) + spew_debug = 1; +#endif + else + return 0; + + return 1; +} + +/* Incorporate `const' and `volatile' qualifiers for member functions. + FUNCTION is a TYPE_DECL or a FUNCTION_DECL. + QUALS is a list of qualifiers. */ +tree +grok_method_quals (ctype, function, quals) + tree ctype, function, quals; +{ + tree fntype = TREE_TYPE (function); + tree raises = TYPE_RAISES_EXCEPTIONS (fntype); + + do + { + extern tree ridpointers[]; + + if (TREE_VALUE (quals) == ridpointers[(int)RID_CONST]) + { + if (TYPE_READONLY (ctype)) + error ("duplicate `%s' %s", + IDENTIFIER_POINTER (TREE_VALUE (quals)), + (TREE_CODE (function) == FUNCTION_DECL + ? "for member function" : "in type declaration")); + ctype = build_type_variant (ctype, 1, TYPE_VOLATILE (ctype)); + build_pointer_type (ctype); + } + else if (TREE_VALUE (quals) == ridpointers[(int)RID_VOLATILE]) + { + if (TYPE_VOLATILE (ctype)) + error ("duplicate `%s' %s", + IDENTIFIER_POINTER (TREE_VALUE (quals)), + (TREE_CODE (function) == FUNCTION_DECL + ? "for member function" : "in type declaration")); + ctype = build_type_variant (ctype, TYPE_READONLY (ctype), 1); + build_pointer_type (ctype); + } + else + my_friendly_abort (20); + quals = TREE_CHAIN (quals); + } + while (quals); + fntype = build_cplus_method_type (ctype, TREE_TYPE (fntype), + (TREE_CODE (fntype) == METHOD_TYPE + ? TREE_CHAIN (TYPE_ARG_TYPES (fntype)) + : TYPE_ARG_TYPES (fntype))); + if (raises) + fntype = build_exception_variant (ctype, fntype, raises); + + TREE_TYPE (function) = fntype; + return ctype; +} + +#if 0 /* Not used. */ +/* This routine replaces cryptic DECL_NAMEs with readable DECL_NAMEs. + It leaves DECL_ASSEMBLER_NAMEs with the correct value. */ +/* This does not yet work with user defined conversion operators + It should. */ +static void +substitute_nice_name (decl) + tree decl; +{ + if (DECL_NAME (decl) && TREE_CODE (DECL_NAME (decl)) == IDENTIFIER_NODE) + { + char *n = decl_as_string (DECL_NAME (decl), 1); + if (n[strlen (n) - 1] == ' ') + n[strlen (n) - 1] = 0; + DECL_NAME (decl) = get_identifier (n); + } +} +#endif + +/* Warn when -fexternal-templates is used and #pragma + interface/implementation is not used all the times it should be, + inform the user. */ +void +warn_if_unknown_interface () +{ + static int already_warned = 0; + if (++already_warned == 1) + warning ("templates that are built with -fexternal-templates should be in files that have #pragma interface/implementation"); +} + +/* A subroutine of the parser, to handle a component list. */ +tree +grok_x_components (specs, components) + tree specs, components; +{ + register tree t, x, tcode; + + /* We just got some friends. They have been recorded elsewhere. */ + if (components == void_type_node) + return NULL_TREE; + + if (components == NULL_TREE) + { + t = groktypename (build_decl_list (specs, NULL_TREE)); + + if (t == NULL_TREE) + { + error ("error in component specification"); + return NULL_TREE; + } + + switch (TREE_CODE (t)) + { + case VAR_DECL: + /* Static anonymous unions come out as VAR_DECLs. */ + if (TREE_CODE (TREE_TYPE (t)) == UNION_TYPE + && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_TYPE (t)))) + return t; + + /* We return SPECS here, because in the parser it was ending + up with not doing anything to $$, which is what SPECS + represents. */ + return specs; + break; + + case RECORD_TYPE: + /* This code may be needed for UNION_TYPEs as + well. */ + tcode = record_type_node; + if (CLASSTYPE_DECLARED_CLASS(t)) + tcode = class_type_node; + else if (IS_SIGNATURE(t)) + tcode = signature_type_node; + else if (CLASSTYPE_DECLARED_EXCEPTION(t)) + tcode = exception_type_node; + + t = xref_defn_tag(tcode, TYPE_IDENTIFIER(t), NULL_TREE); + if (TYPE_CONTEXT(t)) + CLASSTYPE_NO_GLOBALIZE(t) = 1; + if (TYPE_LANG_SPECIFIC (t) + && CLASSTYPE_DECLARED_EXCEPTION (t)) + shadow_tag (specs); + return NULL_TREE; + break; + + case UNION_TYPE: + case ENUMERAL_TYPE: + if (TREE_CODE(t) == UNION_TYPE) + tcode = union_type_node; + else + tcode = enum_type_node; + + t = xref_defn_tag(tcode, TYPE_IDENTIFIER(t), NULL_TREE); + if (TREE_CODE(t) == UNION_TYPE && TYPE_CONTEXT(t)) + CLASSTYPE_NO_GLOBALIZE(t) = 1; + if (TREE_CODE (t) == UNION_TYPE + && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))) + { + struct pending_inline **p; + x = build_lang_field_decl (FIELD_DECL, NULL_TREE, t); + + /* Wipe out memory of synthesized methods */ + TYPE_HAS_CONSTRUCTOR (t) = 0; + TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0; + TYPE_HAS_INIT_REF (t) = 0; + TYPE_HAS_CONST_INIT_REF (t) = 0; + TYPE_HAS_ASSIGN_REF (t) = 0; + TYPE_HAS_ASSIGNMENT (t) = 0; + TYPE_HAS_CONST_ASSIGN_REF (t) = 0; + + p = &pending_inlines; + for (; *p; *p = (*p)->next) + if (DECL_CONTEXT ((*p)->fndecl) != t) + break; + } + else if (TREE_CODE (t) == ENUMERAL_TYPE) + x = grok_enum_decls (t, NULL_TREE); + else + x = NULL_TREE; + return x; + break; + + default: + if (t != void_type_node) + error ("empty component declaration"); + return NULL_TREE; + } + } + else + { + t = TREE_TYPE (components); + if (TREE_CODE (t) == ENUMERAL_TYPE && TREE_NONLOCAL_FLAG (t)) + return grok_enum_decls (t, components); + else + return components; + } +} + +/* Classes overload their constituent function names automatically. + When a function name is declared in a record structure, + its name is changed to it overloaded name. Since names for + constructors and destructors can conflict, we place a leading + '$' for destructors. + + CNAME is the name of the class we are grokking for. + + FUNCTION is a FUNCTION_DECL. It was created by `grokdeclarator'. + + FLAGS contains bits saying what's special about today's + arguments. 1 == DESTRUCTOR. 2 == OPERATOR. + + If FUNCTION is a destructor, then we must add the `auto-delete' field + as a second parameter. There is some hair associated with the fact + that we must "declare" this variable in the manner consistent with the + way the rest of the arguments were declared. + + QUALS are the qualifiers for the this pointer. */ + +void +grokclassfn (ctype, cname, function, flags, quals) + tree ctype, cname, function; + enum overload_flags flags; + tree quals; +{ + tree fn_name = DECL_NAME (function); + tree arg_types; + tree parm; + tree qualtype; + + if (fn_name == NULL_TREE) + { + error ("name missing for member function"); + fn_name = get_identifier ("<anonymous>"); + DECL_NAME (function) = fn_name; + } + + if (quals) + qualtype = grok_method_quals (ctype, function, quals); + else + qualtype = ctype; + + arg_types = TYPE_ARG_TYPES (TREE_TYPE (function)); + if (TREE_CODE (TREE_TYPE (function)) == METHOD_TYPE) + { + /* Must add the class instance variable up front. */ + /* Right now we just make this a pointer. But later + we may wish to make it special. */ + tree type = TREE_VALUE (arg_types); + + if ((flag_this_is_variable > 0) + && (flags == DTOR_FLAG || DECL_CONSTRUCTOR_P (function))) + type = TYPE_MAIN_VARIANT (type); + + if (DECL_CONSTRUCTOR_P (function)) + { + if (TYPE_USES_VIRTUAL_BASECLASSES (ctype)) + { + DECL_CONSTRUCTOR_FOR_VBASE_P (function) = 1; + /* In this case we need "in-charge" flag saying whether + this constructor is responsible for initialization + of virtual baseclasses or not. */ + parm = build_decl (PARM_DECL, in_charge_identifier, integer_type_node); + /* Mark the artificial `__in_chrg' parameter as "artificial". */ + SET_DECL_ARTIFICIAL (parm); + DECL_ARG_TYPE (parm) = integer_type_node; + DECL_REGISTER (parm) = 1; + TREE_CHAIN (parm) = last_function_parms; + last_function_parms = parm; + } + } + + parm = build_decl (PARM_DECL, this_identifier, type); + /* Mark the artificial `this' parameter as "artificial". */ + SET_DECL_ARTIFICIAL (parm); + DECL_ARG_TYPE (parm) = type; + /* We can make this a register, so long as we don't + accidentally complain if someone tries to take its address. */ + DECL_REGISTER (parm) = 1; + if (TYPE_READONLY (type)) + TREE_READONLY (parm) = 1; + TREE_CHAIN (parm) = last_function_parms; + last_function_parms = parm; + } + + if (flags == DTOR_FLAG) + { + char *buf, *dbuf; + tree const_integer_type = build_type_variant (integer_type_node, 1, 0); + int len = sizeof (DESTRUCTOR_DECL_PREFIX)-1; + + arg_types = hash_tree_chain (const_integer_type, void_list_node); + TREE_SIDE_EFFECTS (arg_types) = 1; + /* Build the overload name. It will look like `7Example'. */ + if (IDENTIFIER_TYPE_VALUE (cname)) + dbuf = build_overload_name (IDENTIFIER_TYPE_VALUE (cname), 1, 1); + else if (IDENTIFIER_LOCAL_VALUE (cname)) + dbuf = build_overload_name (TREE_TYPE (IDENTIFIER_LOCAL_VALUE (cname)), 1, 1); + else + /* Using ctype fixes the `X::Y::~Y()' crash. The cname has no type when + it's defined out of the class definition, since poplevel_class wipes + it out. This used to be internal error 346. */ + dbuf = build_overload_name (ctype, 1, 1); + buf = (char *) alloca (strlen (dbuf) + sizeof (DESTRUCTOR_DECL_PREFIX)); + bcopy (DESTRUCTOR_DECL_PREFIX, buf, len); + buf[len] = '\0'; + strcat (buf, dbuf); + DECL_ASSEMBLER_NAME (function) = get_identifier (buf); + parm = build_decl (PARM_DECL, in_charge_identifier, const_integer_type); + /* Mark the artificial `__in_chrg' parameter as "artificial". */ + SET_DECL_ARTIFICIAL (parm); + TREE_USED (parm) = 1; +#if 0 + /* We don't need to mark the __in_chrg parameter itself as `const' + since its type is already `const int'. In fact we MUST NOT mark + it as `const' cuz that will screw up the debug info (causing it + to say that the type of __in_chrg is `const const int'). */ + TREE_READONLY (parm) = 1; +#endif + DECL_ARG_TYPE (parm) = const_integer_type; + /* This is the same chain as DECL_ARGUMENTS (...). */ + TREE_CHAIN (last_function_parms) = parm; + + TREE_TYPE (function) = build_cplus_method_type (qualtype, void_type_node, + arg_types); + TYPE_HAS_DESTRUCTOR (ctype) = 1; + } + else + { + tree these_arg_types; + + if (DECL_CONSTRUCTOR_FOR_VBASE_P (function)) + { + arg_types = hash_tree_chain (integer_type_node, + TREE_CHAIN (arg_types)); + TREE_TYPE (function) + = build_cplus_method_type (qualtype, + TREE_TYPE (TREE_TYPE (function)), + arg_types); + arg_types = TYPE_ARG_TYPES (TREE_TYPE (function)); + } + + these_arg_types = arg_types; + + if (TREE_CODE (TREE_TYPE (function)) == FUNCTION_TYPE) + /* Only true for static member functions. */ + these_arg_types = hash_tree_chain (TYPE_POINTER_TO (qualtype), + arg_types); + + DECL_ASSEMBLER_NAME (function) + = build_decl_overload (fn_name, these_arg_types, + 1 + DECL_CONSTRUCTOR_P (function)); + +#if 0 + /* This code is going into the compiler, but currently, it makes + libg++/src/Interger.cc not compile. The problem is that the nice name + winds up going into the symbol table, and conversion operations look + for the manged name. */ + substitute_nice_name (function); +#endif + } + + DECL_ARGUMENTS (function) = last_function_parms; + /* First approximations. */ + DECL_CONTEXT (function) = ctype; + DECL_CLASS_CONTEXT (function) = ctype; +} + +/* Work on the expr used by alignof (this is only called by the parser). */ +tree +grok_alignof (expr) + tree expr; +{ + tree best, t; + int bestalign; + + if (TREE_CODE (expr) == COMPONENT_REF + && DECL_BIT_FIELD (TREE_OPERAND (expr, 1))) + error ("`__alignof__' applied to a bit-field"); + + if (TREE_CODE (expr) == INDIRECT_REF) + { + best = t = TREE_OPERAND (expr, 0); + bestalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t))); + + while (TREE_CODE (t) == NOP_EXPR + && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == POINTER_TYPE) + { + int thisalign; + t = TREE_OPERAND (t, 0); + thisalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t))); + if (thisalign > bestalign) + best = t, bestalign = thisalign; + } + return c_alignof (TREE_TYPE (TREE_TYPE (best))); + } + else + { + /* ANSI says arrays and fns are converted inside comma. + But we can't convert them in build_compound_expr + because that would break commas in lvalues. + So do the conversion here if operand was a comma. */ + if (TREE_CODE (expr) == COMPOUND_EXPR + && (TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE + || TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE)) + expr = default_conversion (expr); + return c_alignof (TREE_TYPE (expr)); + } +} + +/* Create an ARRAY_REF, checking for the user doing things backwards + along the way. */ +tree +grok_array_decl (array_expr, index_exp) + tree array_expr, index_exp; +{ + tree type = TREE_TYPE (array_expr); + + if (type == error_mark_node || index_exp == error_mark_node) + return error_mark_node; + if (type == NULL_TREE) + { + /* Something has gone very wrong. Assume we are mistakenly reducing + an expression instead of a declaration. */ + error ("parser may be lost: is there a '{' missing somewhere?"); + return NULL_TREE; + } + + if (TREE_CODE (type) == OFFSET_TYPE + || TREE_CODE (type) == REFERENCE_TYPE) + type = TREE_TYPE (type); + + /* If they have an `operator[]', use that. */ + if (TYPE_LANG_SPECIFIC (type) + && TYPE_OVERLOADS_ARRAY_REF (type)) + return build_opfncall (ARRAY_REF, LOOKUP_NORMAL, + array_expr, index_exp, NULL_TREE); + + /* Otherwise, create an ARRAY_REF for a pointer or array type. */ + if (TREE_CODE (type) == POINTER_TYPE + || TREE_CODE (type) == ARRAY_TYPE) + return build_array_ref (array_expr, index_exp); + + /* Woops, looks like they did something like `5[a]' instead of `a[5]'. + We don't emit a warning or error for this, since it's allowed + by ARM $8.2.4. */ + + type = TREE_TYPE (index_exp); + + if (TREE_CODE (type) == OFFSET_TYPE + || TREE_CODE (type) == REFERENCE_TYPE) + type = TREE_TYPE (type); + + if (TYPE_LANG_SPECIFIC (type) + && TYPE_OVERLOADS_ARRAY_REF (type)) + error ("array expression backwards"); + else if (TREE_CODE (type) == POINTER_TYPE + || TREE_CODE (type) == ARRAY_TYPE) + return build_array_ref (index_exp, array_expr); + else + error("`[]' applied to non-pointer type"); + + /* We gave an error, so give an error. Huh? */ + return error_mark_node; +} + +/* Given the cast expression EXP, checking out its validity. Either return + an error_mark_node if there was an unavoidable error, return a cast to + void for trying to delete a pointer w/ the value 0, or return the + call to delete. If DOING_VEC is 1, we handle things differently + for doing an array delete. If DOING_VEC is 2, they gave us the + array size as an argument to delete. + Implements ARM $5.3.4. This is called from the parser. */ +tree +delete_sanity (exp, size, doing_vec, use_global_delete) + tree exp, size; + int doing_vec, use_global_delete; +{ + tree t = stabilize_reference (convert_from_reference (exp)); + tree type = TREE_TYPE (t); + enum tree_code code = TREE_CODE (type); + /* For a regular vector delete (aka, no size argument) we will pass + this down as a NULL_TREE into build_vec_delete. */ + tree maxindex = NULL_TREE; + /* This is used for deleting arrays. */ + tree elt_size; + + switch (doing_vec) + { + case 2: + maxindex = build_binary_op (MINUS_EXPR, size, integer_one_node, 1); + if (! flag_traditional) + pedwarn ("anachronistic use of array size in vector delete"); + /* Fall through. */ + case 1: + elt_size = c_sizeof (type); + break; + default: + if (code != POINTER_TYPE) + { + cp_error ("type `%#T' argument given to `delete', expected pointer", + type); + return error_mark_node; + } + + /* Deleting a pointer with the value zero is legal and has no effect. */ + if (integer_zerop (t)) + return build1 (NOP_EXPR, void_type_node, t); + } + + /* You can't delete a pointer to constant. */ + if (code == POINTER_TYPE && TREE_READONLY (TREE_TYPE (type))) + { + error ("`const *' cannot be deleted"); + return error_mark_node; + } + +#if 0 + /* If the type has no destructor, then we should build a regular + delete, instead of a vector delete. Otherwise, we would end + up passing a bogus offset into __builtin_delete, which is + not expecting it. */ + if (doing_vec + && TREE_CODE (type) == POINTER_TYPE + && !TYPE_HAS_DESTRUCTOR (TREE_TYPE (type))) + { + doing_vec = 0; + use_global_delete = 1; + } +#endif + + if (doing_vec) + return build_vec_delete (t, maxindex, elt_size, integer_one_node, + integer_two_node, use_global_delete); + else + return build_delete (type, t, integer_three_node, + LOOKUP_NORMAL|LOOKUP_HAS_IN_CHARGE, + use_global_delete); +} + +/* Sanity check: report error if this function FUNCTION is not + really a member of the class (CTYPE) it is supposed to belong to. + CNAME is the same here as it is for grokclassfn above. */ + +void +check_classfn (ctype, cname, function) + tree ctype, cname, function; +{ + tree fn_name = DECL_NAME (function); + tree fndecl; + tree method_vec = CLASSTYPE_METHOD_VEC (ctype); + tree *methods = 0; + tree *end = 0; + + if (method_vec != 0) + { + methods = &TREE_VEC_ELT (method_vec, 0); + end = TREE_VEC_END (method_vec); + + /* First suss out ctors and dtors. */ + if (*methods && fn_name == cname) + goto got_it; + + while (++methods != end) + { + if (fn_name == DECL_NAME (*methods)) + { + got_it: + fndecl = *methods; + while (fndecl) + { + if (DECL_ASSEMBLER_NAME (function) == DECL_ASSEMBLER_NAME (fndecl)) + return; + fndecl = DECL_CHAIN (fndecl); + } + break; /* loser */ + } + } + } + + if (methods != end) + cp_error ("argument list for `%D' does not match any in class `%T'", + fn_name, ctype); + else + { + methods = 0; + cp_error ("no `%D' member function declared in class `%T'", + fn_name, ctype); + } + + /* If we did not find the method in the class, add it to + avoid spurious errors. */ + add_method (ctype, methods, function); +} + +/* Process the specs, declarator (NULL if omitted) and width (NULL if omitted) + of a structure component, returning a FIELD_DECL node. + QUALS is a list of type qualifiers for this decl (such as for declaring + const member functions). + + This is done during the parsing of the struct declaration. + The FIELD_DECL nodes are chained together and the lot of them + are ultimately passed to `build_struct' to make the RECORD_TYPE node. + + C++: + + If class A defines that certain functions in class B are friends, then + the way I have set things up, it is B who is interested in permission + granted by A. However, it is in A's context that these declarations + are parsed. By returning a void_type_node, class A does not attempt + to incorporate the declarations of the friends within its structure. + + DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING + CHANGES TO CODE IN `start_method'. */ + +tree +grokfield (declarator, declspecs, raises, init, asmspec_tree) + tree declarator, declspecs, raises, init, asmspec_tree; +{ + register tree value; + char *asmspec = 0; + + /* Convert () initializers to = initializers. */ + if (init == NULL_TREE && declarator != NULL_TREE + && TREE_CODE (declarator) == CALL_EXPR + && TREE_OPERAND (declarator, 0) + && (TREE_CODE (TREE_OPERAND (declarator, 0)) == IDENTIFIER_NODE + || TREE_CODE (TREE_OPERAND (declarator, 0)) == SCOPE_REF) + && parmlist_is_exprlist (TREE_OPERAND (declarator, 1))) + { + init = TREE_OPERAND (declarator, 1); + declarator = TREE_OPERAND (declarator, 0); + } + + if (init + && TREE_CODE (init) == TREE_LIST + && TREE_VALUE (init) == error_mark_node + && TREE_CHAIN (init) == NULL_TREE) + init = NULL_TREE; + + value = grokdeclarator (declarator, declspecs, FIELD, init != 0, raises); + if (! value) + return value; /* friend or constructor went bad. */ + + /* Pass friendly classes back. */ + if (TREE_CODE (value) == VOID_TYPE) + return void_type_node; + + if (DECL_NAME (value) != NULL_TREE + && IDENTIFIER_POINTER (DECL_NAME (value))[0] == '_' + && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (value)), "_vptr")) + cp_error ("member `%D' conflicts with virtual function table field name", value); + + /* Stash away type declarations. */ + if (TREE_CODE (value) == TYPE_DECL) + { + DECL_NONLOCAL (value) = 1; + DECL_CONTEXT (value) = current_class_type; + DECL_CLASS_CONTEXT (value) = current_class_type; + CLASSTYPE_LOCAL_TYPEDECLS (current_class_type) = 1; + pushdecl_class_level (value); + return value; + } + + if (IS_SIGNATURE (current_class_type) + && TREE_CODE (value) != FUNCTION_DECL) + { + error ("field declaration not allowed in signature"); + return void_type_node; + } + + if (DECL_IN_AGGR_P (value)) + { + cp_error ("`%D' is already defined in the class %T", value, + DECL_CONTEXT (value)); + return void_type_node; + } + + if (flag_cadillac) + cadillac_start_decl (value); + + if (asmspec_tree) + asmspec = TREE_STRING_POINTER (asmspec_tree); + + if (init) + { + if (IS_SIGNATURE (current_class_type) + && TREE_CODE (value) == FUNCTION_DECL) + { + error ("function declarations cannot have initializers in signature"); + init = NULL_TREE; + } + else if (TREE_CODE (value) == FUNCTION_DECL) + { + grok_function_init (value, init); + init = NULL_TREE; + } + else if (pedantic && TREE_CODE (value) != VAR_DECL) + /* Already complained in grokdeclarator. */ + init = NULL_TREE; + else + { + /* We allow initializers to become parameters to base + initializers. */ + if (TREE_CODE (init) == TREE_LIST) + { + if (TREE_CHAIN (init) == NULL_TREE) + init = TREE_VALUE (init); + else + init = digest_init (TREE_TYPE (value), init, (tree *)0); + } + + if (TREE_CODE (init) == CONST_DECL) + init = DECL_INITIAL (init); + else if (TREE_READONLY_DECL_P (init)) + init = decl_constant_value (init); + else if (TREE_CODE (init) == CONSTRUCTOR) + init = digest_init (TREE_TYPE (value), init, (tree *)0); + my_friendly_assert (TREE_PERMANENT (init), 192); + if (init == error_mark_node) + /* We must make this look different than `error_mark_node' + because `decl_const_value' would mis-interpret it + as only meaning that this VAR_DECL is defined. */ + init = build1 (NOP_EXPR, TREE_TYPE (value), init); + else if (! TREE_CONSTANT (init)) + { + /* We can allow references to things that are effectively + static, since references are initialized with the address. */ + if (TREE_CODE (TREE_TYPE (value)) != REFERENCE_TYPE + || (TREE_STATIC (init) == 0 + && (TREE_CODE_CLASS (TREE_CODE (init)) != 'd' + || DECL_EXTERNAL (init) == 0))) + { + error ("field initializer is not constant"); + init = error_mark_node; + } + } + } + } + + /* The corresponding pop_obstacks is in finish_decl. */ + push_obstacks_nochange (); + + if (TREE_CODE (value) == VAR_DECL) + { + /* We cannot call pushdecl here, because that would + fill in the value of our TREE_CHAIN. Instead, we + modify finish_decl to do the right thing, namely, to + put this decl out straight away. */ + if (TREE_PUBLIC (value)) + { + /* current_class_type can be NULL_TREE in case of error. */ + if (asmspec == 0 && current_class_type) + { + tree name; + char *buf, *buf2; + + buf2 = build_overload_name (current_class_type, 1, 1); + buf = (char *)alloca (IDENTIFIER_LENGTH (DECL_NAME (value)) + + sizeof (STATIC_NAME_FORMAT) + + strlen (buf2)); + sprintf (buf, STATIC_NAME_FORMAT, buf2, + IDENTIFIER_POINTER (DECL_NAME (value))); + name = get_identifier (buf); + TREE_PUBLIC (value) = 1; + DECL_INITIAL (value) = error_mark_node; + DECL_ASSEMBLER_NAME (value) = name; + } + pending_statics = perm_tree_cons (NULL_TREE, value, pending_statics); + + /* Static consts need not be initialized in the class definition. */ + if (init != NULL_TREE && TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (value))) + { + static int explanation = 0; + + error ("initializer invalid for static member with constructor"); + if (explanation++ == 0) + error ("(you really want to initialize it separately)"); + init = 0; + } + /* Force the compiler to know when an uninitialized static + const member is being used. */ + if (TYPE_READONLY (value) && init == 0) + TREE_USED (value) = 1; + } + DECL_INITIAL (value) = init; + DECL_IN_AGGR_P (value) = 1; + + finish_decl (value, init, asmspec_tree, 1); + pushdecl_class_level (value); + return value; + } + if (TREE_CODE (value) == FIELD_DECL) + { + if (asmspec) + DECL_ASSEMBLER_NAME (value) = get_identifier (asmspec); + if (DECL_INITIAL (value) == error_mark_node) + init = error_mark_node; + finish_decl (value, init, asmspec_tree, 1); + DECL_INITIAL (value) = init; + DECL_IN_AGGR_P (value) = 1; + return value; + } + if (TREE_CODE (value) == FUNCTION_DECL) + { + if (DECL_CHAIN (value) != NULL_TREE) + { + /* Need a fresh node here so that we don't get circularity + when we link these together. */ + value = copy_node (value); + /* When does this happen? */ + my_friendly_assert (init == NULL_TREE, 193); + } + finish_decl (value, init, asmspec_tree, 1); + + /* Pass friends back this way. */ + if (DECL_FRIEND_P (value)) + return void_type_node; + + if (current_function_decl && ! IS_SIGNATURE (current_class_type)) + cp_error ("method `%#D' of local class must be defined in class body", + value); + + DECL_IN_AGGR_P (value) = 1; + return value; + } + my_friendly_abort (21); + /* NOTREACHED */ + return NULL_TREE; +} + +/* Like `grokfield', but for bitfields. + WIDTH is non-NULL for bit fields only, and is an INTEGER_CST node. */ + +tree +grokbitfield (declarator, declspecs, width) + tree declarator, declspecs, width; +{ + register tree value = grokdeclarator (declarator, declspecs, BITFIELD, 0, NULL_TREE); + + if (! value) return NULL_TREE; /* friends went bad. */ + + /* Pass friendly classes back. */ + if (TREE_CODE (value) == VOID_TYPE) + return void_type_node; + + if (TREE_CODE (value) == TYPE_DECL) + { + cp_error ("cannot declare `%D' to be a bitfield type", value); + return NULL_TREE; + } + + if (IS_SIGNATURE (current_class_type)) + { + error ("field declaration not allowed in signature"); + return void_type_node; + } + + if (DECL_IN_AGGR_P (value)) + { + cp_error ("`%D' is already defined in the class %T", value, + DECL_CONTEXT (value)); + return void_type_node; + } + + GNU_xref_member (current_class_name, value); + + if (TREE_STATIC (value)) + { + cp_error ("static member `%D' cannot be a bitfield", value); + return NULL_TREE; + } + finish_decl (value, NULL_TREE, NULL_TREE, 0); + + if (width != error_mark_node) + { + /* detect invalid field size. */ + if (TREE_CODE (width) == CONST_DECL) + width = DECL_INITIAL (width); + else if (TREE_READONLY_DECL_P (width)) + width = decl_constant_value (width); + if (TREE_CODE (width) != INTEGER_CST) + { + cp_error ("structure field `%D' width not an integer constant", + value); + DECL_INITIAL (value) = NULL_TREE; + } + else + { + constant_expression_warning (width); + DECL_INITIAL (value) = width; + DECL_BIT_FIELD (value) = 1; + } + } + + DECL_IN_AGGR_P (value) = 1; + return value; +} + +#if 0 +/* Like GROKFIELD, except that the declarator has been + buried in DECLSPECS. Find the declarator, and + return something that looks like it came from + GROKFIELD. */ +tree +groktypefield (declspecs, parmlist) + tree declspecs; + tree parmlist; +{ + tree spec = declspecs; + tree prev = NULL_TREE; + + tree type_id = NULL_TREE; + tree quals = NULL_TREE; + tree lengths = NULL_TREE; + tree decl = NULL_TREE; + + while (spec) + { + register tree id = TREE_VALUE (spec); + + if (TREE_CODE (spec) != TREE_LIST) + /* Certain parse errors slip through. For example, + `int class ();' is not caught by the parser. Try + weakly to recover here. */ + return NULL_TREE; + + if (TREE_CODE (id) == TYPE_DECL + || (TREE_CODE (id) == IDENTIFIER_NODE && TREE_TYPE (id))) + { + /* We have a constructor/destructor or + conversion operator. Use it. */ + if (prev) + TREE_CHAIN (prev) = TREE_CHAIN (spec); + else + declspecs = TREE_CHAIN (spec); + + type_id = id; + goto found; + } + prev = spec; + spec = TREE_CHAIN (spec); + } + + /* Nope, we have a conversion operator to a scalar type or something + else, that includes things like constructor declarations for + templates. */ + spec = declspecs; + while (spec) + { + tree id = TREE_VALUE (spec); + + if (TREE_CODE (id) == IDENTIFIER_NODE) + { + if (id == ridpointers[(int)RID_INT] + || id == ridpointers[(int)RID_DOUBLE] + || id == ridpointers[(int)RID_FLOAT] + || id == ridpointers[(int)RID_WCHAR]) + { + if (type_id) + error ("extra `%s' ignored", + IDENTIFIER_POINTER (id)); + else + type_id = id; + } + else if (id == ridpointers[(int)RID_LONG] + || id == ridpointers[(int)RID_SHORT] + || id == ridpointers[(int)RID_CHAR]) + { + lengths = tree_cons (NULL_TREE, id, lengths); + } + else if (id == ridpointers[(int)RID_VOID]) + { + if (type_id) + error ("spurious `void' type ignored"); + else + error ("conversion to `void' type invalid"); + } + else if (id == ridpointers[(int)RID_AUTO] + || id == ridpointers[(int)RID_REGISTER] + || id == ridpointers[(int)RID_TYPEDEF] + || id == ridpointers[(int)RID_CONST] + || id == ridpointers[(int)RID_VOLATILE]) + { + error ("type specifier `%s' used invalidly", + IDENTIFIER_POINTER (id)); + } + else if (id == ridpointers[(int)RID_FRIEND] + || id == ridpointers[(int)RID_VIRTUAL] + || id == ridpointers[(int)RID_INLINE] + || id == ridpointers[(int)RID_UNSIGNED] + || id == ridpointers[(int)RID_SIGNED] + || id == ridpointers[(int)RID_STATIC] + || id == ridpointers[(int)RID_EXTERN]) + { + quals = tree_cons (NULL_TREE, id, quals); + } + else + { + /* Happens when we have a global typedef + and a class-local member function with + the same name. */ + type_id = id; + goto found; + } + } + else if (TREE_CODE (id) == RECORD_TYPE) + { + type_id = TYPE_NAME (id); + if (TREE_CODE (type_id) == TYPE_DECL) + type_id = DECL_NAME (type_id); + if (type_id == NULL_TREE) + error ("identifier for aggregate type conversion omitted"); + } + else if (TREE_CODE_CLASS (TREE_CODE (id)) == 't') + error ("`operator' missing on conversion operator or tag missing from type"); + else + my_friendly_abort (194); + spec = TREE_CHAIN (spec); + } + + if (type_id) + declspecs = chainon (lengths, quals); + else if (lengths) + { + if (TREE_CHAIN (lengths)) + error ("multiple length specifiers"); + type_id = ridpointers[(int)RID_INT]; + declspecs = chainon (lengths, quals); + } + else if (quals) + { + error ("no type given, defaulting to `operator int ...'"); + type_id = ridpointers[(int)RID_INT]; + declspecs = quals; + } + else + return NULL_TREE; + + found: + decl = grokdeclarator (build_parse_node (CALL_EXPR, type_id, parmlist, NULL_TREE), + declspecs, FIELD, 0, NULL_TREE); + if (decl == NULL_TREE) + return NULL_TREE; + + if (TREE_CODE (decl) == FUNCTION_DECL && DECL_CHAIN (decl) != NULL_TREE) + { + /* Need a fresh node here so that we don't get circularity + when we link these together. */ + decl = copy_node (decl); + } + + if (decl == void_type_node + || (TREE_CODE (decl) == FUNCTION_DECL + && TREE_CODE (TREE_TYPE (decl)) != METHOD_TYPE)) + /* bunch of friends. */ + return decl; + + if (DECL_IN_AGGR_P (decl)) + { + cp_error ("`%D' already defined in the class ", decl); + return void_type_node; + } + + finish_decl (decl, NULL_TREE, NULL_TREE, 0); + + /* If this declaration is common to another declaration + complain about such redundancy, and return NULL_TREE + so that we don't build a circular list. */ + if (DECL_CHAIN (decl)) + { + cp_error ("function `%D' declared twice in class %T", decl, + DECL_CONTEXT (decl)); + return NULL_TREE; + } + DECL_IN_AGGR_P (decl) = 1; + return decl; +} +#endif + +tree +grokoptypename (declspecs, declarator) + tree declspecs, declarator; +{ + tree t = grokdeclarator (declarator, declspecs, TYPENAME, 0, NULL_TREE); + return build_typename_overload (t); +} + +/* When a function is declared with an initializer, + do the right thing. Currently, there are two possibilities: + + class B + { + public: + // initialization possibility #1. + virtual void f () = 0; + int g (); + }; + + class D1 : B + { + public: + int d1; + // error, no f (); + }; + + class D2 : B + { + public: + int d2; + void f (); + }; + + class D3 : B + { + public: + int d3; + // initialization possibility #2 + void f () = B::f; + }; + +*/ + +int +copy_assignment_arg_p (parmtype, virtualp) + tree parmtype; + int virtualp; +{ + if (TREE_CODE (parmtype) == REFERENCE_TYPE) + parmtype = TREE_TYPE (parmtype); + + if ((TYPE_MAIN_VARIANT (parmtype) == current_class_type) + || (virtualp && DERIVED_FROM_P (parmtype, current_class_type))) + return 1; + + return 0; +} + +static void +grok_function_init (decl, init) + tree decl; + tree init; +{ + /* An initializer for a function tells how this function should + be inherited. */ + tree type = TREE_TYPE (decl); + + if (TREE_CODE (type) == FUNCTION_TYPE) + cp_error ("initializer specified for non-member function `%D'", decl); + else if (DECL_VINDEX (decl) == NULL_TREE) + cp_error ("initializer specified for non-virtual method `%D'", decl); + else if (integer_zerop (init)) + { +#if 0 + /* Mark this function as being "defined". */ + DECL_INITIAL (decl) = error_mark_node; + /* pure virtual destructors must be defined. */ + /* pure virtual needs to be defined (as abort) only when put in + vtbl. For wellformed call, it should be itself. pr4737 */ + if (!DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl))) + { + extern tree abort_fndecl; + /* Give this node rtl from `abort'. */ + DECL_RTL (decl) = DECL_RTL (abort_fndecl); + } +#endif + DECL_ABSTRACT_VIRTUAL_P (decl) = 1; + if (DECL_NAME (decl) == ansi_opname [(int) MODIFY_EXPR]) + { + tree parmtype + = TREE_VALUE (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))); + + if (copy_assignment_arg_p (parmtype, 1)) + TYPE_HAS_ABSTRACT_ASSIGN_REF (current_class_type) = 1; + } + } + else if (TREE_CODE (init) == OFFSET_REF + && TREE_OPERAND (init, 0) == NULL_TREE + && TREE_CODE (TREE_TYPE (init)) == METHOD_TYPE) + { + tree basetype = DECL_CLASS_CONTEXT (init); + tree basefn = TREE_OPERAND (init, 1); + if (TREE_CODE (basefn) != FUNCTION_DECL) + cp_error ("non-method initializer invalid for method `%D'", decl); + else if (! BINFO_OFFSET_ZEROP (TYPE_BINFO (DECL_CLASS_CONTEXT (basefn)))) + sorry ("base member function from other than first base class"); + else + { + tree binfo = get_binfo (basetype, TYPE_METHOD_BASETYPE (type), 1); + if (binfo == error_mark_node) + ; + else if (binfo == 0) + error_not_base_type (TYPE_METHOD_BASETYPE (TREE_TYPE (init)), + TYPE_METHOD_BASETYPE (type)); + else + { + /* Mark this function as being defined, + and give it new rtl. */ + DECL_INITIAL (decl) = error_mark_node; + DECL_RTL (decl) = DECL_RTL (basefn); + } + } + } + else + cp_error ("invalid initializer for virtual method `%D'", decl); +} + +/* When we get a declaration of the form + + type cname::fname ... + + the node for `cname::fname' gets built here in a special way. + Namely, we push into `cname's scope. When this declaration is + processed, we pop back out. */ +tree +build_push_scope (cname, name) + tree cname; + tree name; +{ + extern int current_class_depth; + tree ctype, rval; + int is_ttp = 0; + + if (cname == error_mark_node) + return error_mark_node; + + ctype = IDENTIFIER_TYPE_VALUE (cname); + + if (TREE_CODE (ctype) == TEMPLATE_TYPE_PARM) + is_ttp = 1; + else if (ctype == NULL_TREE || ! IS_AGGR_TYPE (ctype)) + { + cp_error ("`%T' not defined as aggregate type", cname); + return name; + } + else if (IS_SIGNATURE (ctype)) + { + error ("cannot push into signature scope, scope resolution operator ignored"); + return name; + } + + rval = build_parse_node (SCOPE_REF, cname, name); + + /* Don't need to push the scope if we're already in it. + We also don't need to push the scope for a ptr-to-member/method. */ + + if (ctype == current_class_type || TREE_CODE (name) != IDENTIFIER_NODE + || is_ttp) + return rval; + + /* We do need to push the scope in this case, since CTYPE helps + determine subsequent intializers (i.e., Foo::Bar x = foo_enum_1;). */ + + push_nested_class (ctype, 3); + TREE_COMPLEXITY (rval) = current_class_depth; + return rval; +} + +void cplus_decl_attributes (decl, attributes) + tree decl, attributes; +{ + if (decl && decl != void_type_node) + decl_attributes (decl, attributes); +} + +/* CONSTRUCTOR_NAME: + Return the name for the constructor (or destructor) for the + specified class. Argument can be RECORD_TYPE, TYPE_DECL, or + IDENTIFIER_NODE. When given a template, this routine doesn't + lose the specialization. */ +tree +constructor_name_full (thing) + tree thing; +{ + if (TREE_CODE (thing) == UNINSTANTIATED_P_TYPE) + return DECL_NAME (UPT_TEMPLATE (thing)); + if (IS_AGGR_TYPE_CODE (TREE_CODE (thing))) + { + if (TYPE_WAS_ANONYMOUS (thing) && TYPE_HAS_CONSTRUCTOR (thing)) + thing = DECL_NAME (TREE_VEC_ELT (TYPE_METHODS (thing), 0)); + else + thing = TYPE_NAME (thing); + } + if (TREE_CODE (thing) == TYPE_DECL + || (TREE_CODE (thing) == TEMPLATE_DECL + && DECL_TEMPLATE_IS_CLASS (thing))) + thing = DECL_NAME (thing); + my_friendly_assert (TREE_CODE (thing) == IDENTIFIER_NODE, 197); + return thing; +} + +/* CONSTRUCTOR_NAME: + Return the name for the constructor (or destructor) for the + specified class. Argument can be RECORD_TYPE, TYPE_DECL, or + IDENTIFIER_NODE. When given a template, return the plain + unspecialized name. */ +tree +constructor_name (thing) + tree thing; +{ + tree t; + thing = constructor_name_full (thing); + t = IDENTIFIER_TEMPLATE (thing); + if (!t) + return thing; + t = TREE_PURPOSE (t); + return DECL_NAME (t); +} + +/* Cache the value of this class's main virtual function table pointer + in a register variable. This will save one indirection if a + more than one virtual function call is made this function. */ +void +setup_vtbl_ptr () +{ + extern rtx base_init_insns; + + if (base_init_insns == 0 + && DECL_CONSTRUCTOR_P (current_function_decl)) + emit_base_init (current_class_type, 0); + +#if 0 + /* This has something a little wrong with it. + + On a sun4, code like: + + be L6 + ld [%i0],%o1 + + is generated, when the below is used when -O4 is given. The delay + slot it filled with an instruction that is safe, when this isn't + used, like in: + + be L6 + sethi %hi(LC1),%o0 + ld [%i0],%o1 + + on code like: + + struct A { + virtual void print() { printf("xxx"); } + void f(); + }; + + void A::f() { + if (this) { + print(); + } else { + printf("0"); + } + } + + And that is why this is disabled for now. (mrs) + */ + + if ((flag_this_is_variable & 1) == 0 + && optimize + && current_class_type + && CLASSTYPE_VSIZE (current_class_type) + && ! DECL_STATIC_FUNCTION_P (current_function_decl)) + { + tree vfield = build_vfield_ref (C_C_D, current_class_type); + current_vtable_decl = CLASSTYPE_VTBL_PTR (current_class_type); + DECL_RTL (current_vtable_decl) = 0; + DECL_INITIAL (current_vtable_decl) = error_mark_node; + /* Have to cast the initializer, since it may have come from a + more base class then we ascribe CURRENT_VTABLE_DECL to be. */ + finish_decl (current_vtable_decl, convert_force (TREE_TYPE (current_vtable_decl), vfield), 0, 0); + current_vtable_decl = build_indirect_ref (current_vtable_decl, NULL_PTR); + } + else +#endif + current_vtable_decl = NULL_TREE; +} + +/* Record the existence of an addressable inline function. */ +void +mark_inline_for_output (decl) + tree decl; +{ + if (DECL_SAVED_INLINE (decl)) + return; + DECL_SAVED_INLINE (decl) = 1; + if (DECL_PENDING_INLINE_INFO (decl) != 0 + && ! DECL_PENDING_INLINE_INFO (decl)->deja_vu) + { + struct pending_inline *t = pending_inlines; + my_friendly_assert (DECL_SAVED_INSNS (decl) == 0, 198); + while (t) + { + if (t == DECL_PENDING_INLINE_INFO (decl)) + break; + t = t->next; + } + if (t == 0) + { + t = DECL_PENDING_INLINE_INFO (decl); + t->next = pending_inlines; + pending_inlines = t; + } + DECL_PENDING_INLINE_INFO (decl) = 0; + } + saved_inlines = perm_tree_cons (NULL_TREE, decl, saved_inlines); +} + +void +clear_temp_name () +{ + temp_name_counter = 0; +} + +/* Hand off a unique name which can be used for variable we don't really + want to know about anyway, for example, the anonymous variables which + are needed to make references work. Declare this thing so we can use it. + The variable created will be of type TYPE. + + STATICP is nonzero if this variable should be static. */ + +tree +get_temp_name (type, staticp) + tree type; + int staticp; +{ + char buf[sizeof (AUTO_TEMP_FORMAT) + 20]; + tree decl; + int toplev = global_bindings_p (); + + push_obstacks_nochange (); + if (toplev || staticp) + { + end_temporary_allocation (); + sprintf (buf, AUTO_TEMP_FORMAT, global_temp_name_counter++); + decl = pushdecl_top_level (build_decl (VAR_DECL, get_identifier (buf), type)); + } + else + { + sprintf (buf, AUTO_TEMP_FORMAT, temp_name_counter++); + decl = pushdecl (build_decl (VAR_DECL, get_identifier (buf), type)); + } + TREE_USED (decl) = 1; + TREE_STATIC (decl) = staticp; + + /* If this is a local variable, then lay out its rtl now. + Otherwise, callers of this function are responsible for dealing + with this variable's rtl. */ + if (! toplev) + { + expand_decl (decl); + expand_decl_init (decl); + } + pop_obstacks (); + + return decl; +} + +/* Get a variable which we can use for multiple assignments. + It is not entered into current_binding_level, because + that breaks things when it comes time to do final cleanups + (which take place "outside" the binding contour of the function). */ +tree +get_temp_regvar (type, init) + tree type, init; +{ + static char buf[sizeof (AUTO_TEMP_FORMAT) + 20] = { '_' }; + tree decl; + + sprintf (buf+1, AUTO_TEMP_FORMAT, temp_name_counter++); + decl = build_decl (VAR_DECL, get_identifier (buf), type); + TREE_USED (decl) = 1; + DECL_REGISTER (decl) = 1; + + if (init) + store_init_value (decl, init); + + /* We can expand these without fear, since they cannot need + constructors or destructors. */ + expand_decl (decl); + expand_decl_init (decl); + + if (type_needs_gc_entry (type)) + DECL_GC_OFFSET (decl) = size_int (++current_function_obstack_index); + + return decl; +} + +/* Make the macro TEMP_NAME_P available to units which do not + include c-tree.h. */ +int +temp_name_p (decl) + tree decl; +{ + return TEMP_NAME_P (decl); +} + +/* Finish off the processing of a UNION_TYPE structure. + If there are static members, then all members are + static, and must be laid out together. If the + union is an anonymous union, we arrange for that + as well. PUBLIC_P is nonzero if this union is + not declared static. */ +void +finish_anon_union (anon_union_decl) + tree anon_union_decl; +{ + tree type = TREE_TYPE (anon_union_decl); + tree field, main_decl = NULL_TREE; + tree elems = NULL_TREE; + int public_p = TREE_PUBLIC (anon_union_decl); + int static_p = TREE_STATIC (anon_union_decl); + int external_p = DECL_EXTERNAL (anon_union_decl); + + if ((field = TYPE_FIELDS (type)) == NULL_TREE) + return; + + if (public_p) + { + error ("global anonymous unions must be declared static"); + return; + } + + while (field) + { + tree decl = build_decl (VAR_DECL, DECL_NAME (field), TREE_TYPE (field)); + /* tell `pushdecl' that this is not tentative. */ + DECL_INITIAL (decl) = error_mark_node; + TREE_PUBLIC (decl) = public_p; + TREE_STATIC (decl) = static_p; + DECL_EXTERNAL (decl) = external_p; + decl = pushdecl (decl); + + /* Only write out one anon union element--choose the one that + can hold them all. */ + if (main_decl == NULL_TREE + && simple_cst_equal (DECL_SIZE (decl), DECL_SIZE (anon_union_decl))) + { + main_decl = decl; + } + else + { + /* ??? This causes there to be no debug info written out + about this decl. */ + TREE_ASM_WRITTEN (decl) = 1; + } + + DECL_INITIAL (decl) = NULL_TREE; + /* If there's a cleanup to do, it belongs in the + TREE_PURPOSE of the following TREE_LIST. */ + elems = tree_cons (NULL_TREE, decl, elems); + TREE_TYPE (elems) = type; + field = TREE_CHAIN (field); + } + if (static_p) + { + make_decl_rtl (main_decl, 0, global_bindings_p ()); + DECL_RTL (anon_union_decl) = DECL_RTL (main_decl); + } + + /* The following call assumes that there are never any cleanups + for anonymous unions--a reasonable assumption. */ + expand_anon_union_decl (anon_union_decl, NULL_TREE, elems); + + if (flag_cadillac) + cadillac_finish_anon_union (anon_union_decl); +} + +/* Finish and output a table which is generated by the compiler. + NAME is the name to give the table. + TYPE is the type of the table entry. + INIT is all the elements in the table. + PUBLICP is non-zero if this table should be given external access. */ +tree +finish_table (name, type, init, publicp) + tree name, type, init; + int publicp; +{ + tree itype, atype, decl; + static tree empty_table; + int is_empty = 0; + tree asmspec; + + itype = build_index_type (size_int (list_length (init) - 1)); + atype = build_cplus_array_type (type, itype); + layout_type (atype); + + if (TREE_VALUE (init) == integer_zero_node + && TREE_CHAIN (init) == NULL_TREE) + { + if (empty_table == NULL_TREE) + { + empty_table = get_temp_name (atype, 1); + init = build (CONSTRUCTOR, atype, NULL_TREE, init); + TREE_CONSTANT (init) = 1; + TREE_STATIC (init) = 1; + DECL_INITIAL (empty_table) = init; + asmspec = build_string (IDENTIFIER_LENGTH (DECL_NAME (empty_table)), + IDENTIFIER_POINTER (DECL_NAME (empty_table))); + finish_decl (empty_table, init, asmspec, 0); + } + is_empty = 1; + } + + if (name == NULL_TREE) + { + if (is_empty) + return empty_table; + decl = get_temp_name (atype, 1); + } + else + { + decl = build_decl (VAR_DECL, name, atype); + decl = pushdecl (decl); + TREE_STATIC (decl) = 1; + } + + if (is_empty == 0) + { + TREE_PUBLIC (decl) = publicp; + init = build (CONSTRUCTOR, atype, NULL_TREE, init); + TREE_CONSTANT (init) = 1; + TREE_STATIC (init) = 1; + DECL_INITIAL (decl) = init; + asmspec = build_string (IDENTIFIER_LENGTH (DECL_NAME (decl)), + IDENTIFIER_POINTER (DECL_NAME (decl))); + } + else + { + /* This will cause DECL to point to EMPTY_TABLE in rtl-land. */ + DECL_EXTERNAL (decl) = 1; + TREE_STATIC (decl) = 0; + init = 0; + asmspec = build_string (IDENTIFIER_LENGTH (DECL_NAME (empty_table)), + IDENTIFIER_POINTER (DECL_NAME (empty_table))); + } + + finish_decl (decl, init, asmspec, 0); + return decl; +} + +/* Finish processing a builtin type TYPE. It's name is NAME, + its fields are in the array FIELDS. LEN is the number of elements + in FIELDS minus one, or put another way, it is the maximum subscript + used in FIELDS. + + It is given the same alignment as ALIGN_TYPE. */ +void +finish_builtin_type (type, name, fields, len, align_type) + tree type; + char *name; + tree fields[]; + int len; + tree align_type; +{ + register int i; + + TYPE_FIELDS (type) = fields[0]; + for (i = 0; i < len; i++) + { + layout_type (TREE_TYPE (fields[i])); + DECL_FIELD_CONTEXT (fields[i]) = type; + TREE_CHAIN (fields[i]) = fields[i+1]; + } + DECL_FIELD_CONTEXT (fields[i]) = type; + DECL_CLASS_CONTEXT (fields[i]) = type; + TYPE_ALIGN (type) = TYPE_ALIGN (align_type); + layout_type (type); +#if 0 /* not yet, should get fixed properly later */ + TYPE_NAME (type) = make_type_decl (get_identifier (name), type); +#else + TYPE_NAME (type) = build_decl (TYPE_DECL, get_identifier (name), type); +#endif + layout_decl (TYPE_NAME (type), 0); +} + +/* Auxiliary functions to make type signatures for + `operator new' and `operator delete' correspond to + what compiler will be expecting. */ + +extern tree sizetype; + +tree +coerce_new_type (type) + tree type; +{ + int e1 = 0, e2 = 0; + + if (TREE_CODE (type) == METHOD_TYPE) + type = build_function_type (TREE_TYPE (type), TREE_CHAIN (TYPE_ARG_TYPES (type))); + if (TREE_TYPE (type) != ptr_type_node) + e1 = 1, error ("`operator new' must return type `void *'"); + + /* Technically the type must be `size_t', but we may not know + what that is. */ + if (TYPE_ARG_TYPES (type) == NULL_TREE) + e1 = 1, error ("`operator new' takes type `size_t' parameter"); + else if (TREE_CODE (TREE_VALUE (TYPE_ARG_TYPES (type))) != INTEGER_TYPE + || TYPE_PRECISION (TREE_VALUE (TYPE_ARG_TYPES (type))) != TYPE_PRECISION (sizetype)) + e2 = 1, error ("`operator new' takes type `size_t' as first parameter"); + if (e2) + type = build_function_type (ptr_type_node, tree_cons (NULL_TREE, sizetype, TREE_CHAIN (TYPE_ARG_TYPES (type)))); + else if (e1) + type = build_function_type (ptr_type_node, TYPE_ARG_TYPES (type)); + return type; +} + +tree +coerce_delete_type (type) + tree type; +{ + int e1 = 0, e2 = 0, e3 = 0; + tree arg_types = TYPE_ARG_TYPES (type); + + if (TREE_CODE (type) == METHOD_TYPE) + { + type = build_function_type (TREE_TYPE (type), TREE_CHAIN (arg_types)); + arg_types = TREE_CHAIN (arg_types); + } + if (TREE_TYPE (type) != void_type_node) + e1 = 1, error ("`operator delete' must return type `void'"); + if (arg_types == NULL_TREE + || TREE_VALUE (arg_types) != ptr_type_node) + e2 = 1, error ("`operator delete' takes type `void *' as first parameter"); + + if (arg_types + && TREE_CHAIN (arg_types) + && TREE_CHAIN (arg_types) != void_list_node) + { + /* Again, technically this argument must be `size_t', but again + we may not know what that is. */ + tree t2 = TREE_VALUE (TREE_CHAIN (arg_types)); + if (TREE_CODE (t2) != INTEGER_TYPE + || TYPE_PRECISION (t2) != TYPE_PRECISION (sizetype)) + e3 = 1, error ("second argument to `operator delete' must be of type `size_t'"); + else if (TREE_CHAIN (TREE_CHAIN (arg_types)) != void_list_node) + { + e3 = 1; + if (TREE_CHAIN (TREE_CHAIN (arg_types))) + error ("too many arguments in declaration of `operator delete'"); + else + error ("`...' invalid in specification of `operator delete'"); + } + } + if (e3) + arg_types = tree_cons (NULL_TREE, ptr_type_node, build_tree_list (NULL_TREE, sizetype)); + else if (e3 |= e2) + { + if (arg_types == NULL_TREE) + arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); + else + arg_types = tree_cons (NULL_TREE, ptr_type_node, TREE_CHAIN (arg_types)); + } + else e3 |= e1; + + if (e3) + type = build_function_type (void_type_node, arg_types); + + return type; +} + +static void +mark_vtable_entries (decl) + tree decl; +{ + tree entries = TREE_CHAIN (CONSTRUCTOR_ELTS (DECL_INITIAL (decl))); + + if (flag_dossier) + entries = TREE_CHAIN (entries); + + for (; entries; entries = TREE_CHAIN (entries)) + { + tree fnaddr = FNADDR_FROM_VTABLE_ENTRY (TREE_VALUE (entries)); + tree fn = TREE_OPERAND (fnaddr, 0); + TREE_ADDRESSABLE (fn) = 1; + if (DECL_ABSTRACT_VIRTUAL_P (fn)) + { + extern tree abort_fndecl; + if (flag_vtable_thunks) + fnaddr = TREE_VALUE (entries); + TREE_OPERAND (fnaddr, 0) = abort_fndecl; + } + } +} + +/* Set TREE_PUBLIC and/or TREE_EXTERN on the vtable DECL, + based on TYPE and other static flags. + + Note that anything public is tagged TREE_PUBLIC, whether + it's public in this file or in another one. */ + +void +import_export_vtable (decl, type) + tree decl, type; +{ + if (write_virtuals >= 2 + || CLASSTYPE_TEMPLATE_INSTANTIATION (type)) + { + if (CLASSTYPE_INTERFACE_KNOWN (type)) + { + TREE_PUBLIC (decl) = 1; + DECL_EXTERNAL (decl) = ! CLASSTYPE_VTABLE_NEEDS_WRITING (type); + } + } + else if (write_virtuals != 0) + { + TREE_PUBLIC (decl) = 1; + if (write_virtuals < 0) + DECL_EXTERNAL (decl) = 1; + } +} + +static void +import_export_template (type) + tree type; +{ + if (CLASSTYPE_IMPLICIT_INSTANTIATION (type) + && ! flag_implicit_templates + && CLASSTYPE_INTERFACE_UNKNOWN (type)) + { + SET_CLASSTYPE_INTERFACE_KNOWN (type); + CLASSTYPE_INTERFACE_ONLY (type) = 1; + CLASSTYPE_VTABLE_NEEDS_WRITING (type) = 0; + } +} + +static void +finish_vtable_vardecl (prev, vars) + tree prev, vars; +{ + tree ctype = DECL_CONTEXT (vars); + import_export_template (ctype); + import_export_vtable (vars, ctype); + + if (flag_vtable_thunks && !CLASSTYPE_INTERFACE_KNOWN (ctype)) + { + tree method; + for (method = CLASSTYPE_METHODS (ctype); method != NULL_TREE; + method = DECL_NEXT_METHOD (method)) + { + if (DECL_VINDEX (method) != NULL_TREE && !DECL_SAVED_INSNS (method) + && !DECL_ABSTRACT_VIRTUAL_P (method)) + { + SET_CLASSTYPE_INTERFACE_KNOWN (ctype); + CLASSTYPE_INTERFACE_ONLY (ctype) = DECL_EXTERNAL (method); + TREE_PUBLIC (vars) = 1; + DECL_EXTERNAL (vars) = DECL_EXTERNAL (method); + break; + } + } + } + + if (write_virtuals >= 0 + && ! DECL_EXTERNAL (vars) && (TREE_PUBLIC (vars) || TREE_USED (vars))) + { + extern tree the_null_vtable_entry; + + /* Stuff this virtual function table's size into + `pfn' slot of `the_null_vtable_entry'. */ + tree nelts = array_type_nelts (TREE_TYPE (vars)); + if (flag_vtable_thunks) + TREE_VALUE (CONSTRUCTOR_ELTS (DECL_INITIAL (vars))) = nelts; + else + SET_FNADDR_FROM_VTABLE_ENTRY (the_null_vtable_entry, nelts); + /* Kick out the dossier before writing out the vtable. */ + if (flag_dossier) + rest_of_decl_compilation (TREE_OPERAND (FNADDR_FROM_VTABLE_ENTRY (TREE_VALUE (TREE_CHAIN (CONSTRUCTOR_ELTS (DECL_INITIAL (vars))))), 0), 0, 1, 1); + + /* Write it out. */ + mark_vtable_entries (vars); + if (TREE_TYPE (DECL_INITIAL (vars)) == 0) + store_init_value (vars, DECL_INITIAL (vars)); + +#ifdef DWARF_DEBUGGING_INFO + if (write_symbols == DWARF_DEBUG) + { + /* Mark the VAR_DECL node representing the vtable itself as a + "gratuitous" one, thereby forcing dwarfout.c to ignore it. + It is rather important that such things be ignored because + any effort to actually generate DWARF for them will run + into trouble when/if we encounter code like: + + #pragma interface + struct S { virtual void member (); }; + + because the artificial declaration of the vtable itself (as + manufactured by the g++ front end) will say that the vtable + is a static member of `S' but only *after* the debug output + for the definition of `S' has already been output. This causes + grief because the DWARF entry for the definition of the vtable + will try to refer back to an earlier *declaration* of the + vtable as a static member of `S' and there won't be one. + We might be able to arrange to have the "vtable static member" + attached to the member list for `S' before the debug info for + `S' get written (which would solve the problem) but that would + require more intrusive changes to the g++ front end. */ + + DECL_IGNORED_P (vars) = 1; + } +#endif /* DWARF_DEBUGGING_INFO */ + + rest_of_decl_compilation (vars, NULL_PTR, 1, 1); + } + else if (TREE_USED (vars) && flag_vtable_thunks) + assemble_external (vars); + /* We know that PREV must be non-zero here. */ + TREE_CHAIN (prev) = TREE_CHAIN (vars); +} + +void +walk_vtables (typedecl_fn, vardecl_fn) + register void (*typedecl_fn)(); + register void (*vardecl_fn)(); +{ + tree prev, vars; + + for (prev = 0, vars = getdecls (); vars; vars = TREE_CHAIN (vars)) + { + register tree type = TREE_TYPE (vars); + + if (TREE_CODE (vars) == TYPE_DECL + && type != error_mark_node + && TYPE_LANG_SPECIFIC (type) + && CLASSTYPE_VSIZE (type)) + { + if (typedecl_fn) (*typedecl_fn) (prev, vars); + } + else if (TREE_CODE (vars) == VAR_DECL && DECL_VIRTUAL_P (vars)) + { + if (vardecl_fn) (*vardecl_fn) (prev, vars); + } + else + prev = vars; + } +} + +static void +finish_sigtable_vardecl (prev, vars) + tree prev, vars; +{ + /* We don't need to mark sigtable entries as addressable here as is done + for vtables. Since sigtables, unlike vtables, are always written out, + that was already done in build_signature_table_constructor. */ + + rest_of_decl_compilation (vars, NULL_PTR, 1, 1); + + /* We know that PREV must be non-zero here. */ + TREE_CHAIN (prev) = TREE_CHAIN (vars); +} + +void +walk_sigtables (typedecl_fn, vardecl_fn) + register void (*typedecl_fn)(); + register void (*vardecl_fn)(); +{ + tree prev, vars; + + for (prev = 0, vars = getdecls (); vars; vars = TREE_CHAIN (vars)) + { + register tree type = TREE_TYPE (vars); + + if (TREE_CODE (vars) == TYPE_DECL + && type != error_mark_node + && IS_SIGNATURE (type)) + { + if (typedecl_fn) (*typedecl_fn) (prev, vars); + } + else if (TREE_CODE (vars) == VAR_DECL + && TREE_TYPE (vars) != error_mark_node + && IS_SIGNATURE (TREE_TYPE (vars))) + { + if (vardecl_fn) (*vardecl_fn) (prev, vars); + } + else + prev = vars; + } +} + +extern int parse_time, varconst_time; + +#define TIMEVAR(VAR, BODY) \ +do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0) + +/* This routine is called from the last rule in yyparse (). + Its job is to create all the code needed to initialize and + destroy the global aggregates. We do the destruction + first, since that way we only need to reverse the decls once. */ + +void +finish_file () +{ + extern int lineno; + int start_time, this_time; + + tree fnname; + tree vars = static_aggregates; + int needs_cleaning = 0, needs_messing_up = 0; + + build_exception_table (); + + if (flag_detailed_statistics) + dump_tree_statistics (); + + /* Bad parse errors. Just forget about it. */ + if (! global_bindings_p () || current_class_type) + return; + + start_time = get_run_time (); + + /* Push into C language context, because that's all + we'll need here. */ + push_lang_context (lang_name_c); + + /* Set up the name of the file-level functions we may need. */ + /* Use a global object (which is already required to be unique over + the program) rather than the file name (which imposes extra + constraints). -- Raeburn@MIT.EDU, 10 Jan 1990. */ + + /* See if we really need the hassle. */ + while (vars && needs_cleaning == 0) + { + tree decl = TREE_VALUE (vars); + tree type = TREE_TYPE (decl); + if (TYPE_NEEDS_DESTRUCTOR (type)) + { + needs_cleaning = 1; + needs_messing_up = 1; + break; + } + else + needs_messing_up |= TYPE_NEEDS_CONSTRUCTING (type); + vars = TREE_CHAIN (vars); + } + if (needs_cleaning == 0) + goto mess_up; + + /* Otherwise, GDB can get confused, because in only knows + about source for LINENO-1 lines. */ + lineno -= 1; + + fnname = get_file_function_name ('D'); + start_function (void_list_node, build_parse_node (CALL_EXPR, fnname, void_list_node, NULL_TREE), 0, 0); + fnname = DECL_ASSEMBLER_NAME (current_function_decl); + store_parm_decls (); + + pushlevel (0); + clear_last_expr (); + push_momentary (); + expand_start_bindings (0); + + /* These must be done in backward order to destroy, + in which they happen to be! */ + while (vars) + { + tree decl = TREE_VALUE (vars); + tree type = TREE_TYPE (decl); + tree temp = TREE_PURPOSE (vars); + + if (TYPE_NEEDS_DESTRUCTOR (type)) + { + if (TREE_STATIC (vars)) + expand_start_cond (build_binary_op (NE_EXPR, temp, integer_zero_node, 1), 0); + if (TREE_CODE (type) == ARRAY_TYPE) + temp = decl; + else + { + mark_addressable (decl); + temp = build1 (ADDR_EXPR, TYPE_POINTER_TO (type), decl); + } + temp = build_delete (TREE_TYPE (temp), temp, + integer_two_node, LOOKUP_NORMAL|LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0); + expand_expr_stmt (temp); + + if (TREE_STATIC (vars)) + expand_end_cond (); + } + vars = TREE_CHAIN (vars); + } + + expand_end_bindings (getdecls(), 1, 0); + poplevel (1, 0, 0); + pop_momentary (); + + finish_function (lineno, 0); + + assemble_destructor (IDENTIFIER_POINTER (fnname)); + + /* if it needed cleaning, then it will need messing up: drop through */ + + mess_up: + /* Must do this while we think we are at the top level. */ + vars = nreverse (static_aggregates); + if (vars != NULL_TREE) + { + fnname = get_file_function_name ('I'); + start_function (void_list_node, build_parse_node (CALL_EXPR, fnname, void_list_node, NULL_TREE), 0, 0); + fnname = DECL_ASSEMBLER_NAME (current_function_decl); + store_parm_decls (); + + pushlevel (0); + clear_last_expr (); + push_momentary (); + expand_start_bindings (0); + + while (vars) + { + tree decl = TREE_VALUE (vars); + tree init = TREE_PURPOSE (vars); + tree old_cleanups = cleanups_this_call; + + /* If this was a static attribute within some function's scope, + then don't initialize it here. Also, don't bother + with initializers that contain errors. */ + if (TREE_STATIC (vars) + || (init && TREE_CODE (init) == TREE_LIST + && value_member (error_mark_node, init))) + { + vars = TREE_CHAIN (vars); + continue; + } + + if (TREE_CODE (decl) == VAR_DECL) + { + /* Set these global variables so that GDB at least puts + us near the declaration which required the initialization. */ + input_filename = DECL_SOURCE_FILE (decl); + lineno = DECL_SOURCE_LINE (decl); + emit_note (input_filename, lineno); + + /* 9.5p5: The initializer of a static member of a class has + the same acess rights as a member function. */ + DECL_CLASS_CONTEXT (current_function_decl) = DECL_CONTEXT (decl); + + if (init) + { + if (TREE_CODE (init) == VAR_DECL) + { + /* This behavior results when there are + multiple declarations of an aggregate, + the last of which defines it. */ + if (DECL_RTL (init) == DECL_RTL (decl)) + { + my_friendly_assert (DECL_INITIAL (decl) == error_mark_node + || (TREE_CODE (DECL_INITIAL (decl)) == CONSTRUCTOR + && CONSTRUCTOR_ELTS (DECL_INITIAL (decl)) == NULL_TREE), + 199); + init = DECL_INITIAL (init); + if (TREE_CODE (init) == CONSTRUCTOR + && CONSTRUCTOR_ELTS (init) == NULL_TREE) + init = NULL_TREE; + } +#if 0 + else if (TREE_TYPE (decl) == TREE_TYPE (init)) + { +#if 1 + my_friendly_abort (200); +#else + /* point to real decl's rtl anyway. */ + DECL_RTL (init) = DECL_RTL (decl); + my_friendly_assert (DECL_INITIAL (decl) == error_mark_node, + 201); + init = DECL_INITIAL (init); +#endif /* 1 */ + } +#endif /* 0 */ + } + } + if (IS_AGGR_TYPE (TREE_TYPE (decl)) + || init == 0 + || TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) + expand_aggr_init (decl, init, 0); + else if (TREE_CODE (init) == TREE_VEC) + { + expand_expr (expand_vec_init (decl, TREE_VEC_ELT (init, 0), + TREE_VEC_ELT (init, 1), + TREE_VEC_ELT (init, 2), 0), + const0_rtx, VOIDmode, 0); + free_temp_slots (); + } + else + expand_assignment (decl, init, 0, 0); + + DECL_CLASS_CONTEXT (current_function_decl) = NULL_TREE; + } + else if (TREE_CODE (decl) == SAVE_EXPR) + { + if (! PARM_DECL_EXPR (decl)) + { + /* a `new' expression at top level. */ + expand_expr (decl, const0_rtx, VOIDmode, 0); + free_temp_slots (); + expand_aggr_init (build_indirect_ref (decl, NULL_PTR), init, 0); + } + } + else if (decl == error_mark_node) + ; + else my_friendly_abort (22); + vars = TREE_CHAIN (vars); + /* Cleanup any temporaries needed for the initial value. */ + expand_cleanups_to (old_cleanups); + } + + expand_end_bindings (getdecls(), 1, 0); + poplevel (1, 0, 0); + pop_momentary (); + + finish_function (lineno, 0); + assemble_constructor (IDENTIFIER_POINTER (fnname)); + } + + /* Done with C language context needs. */ + pop_lang_context (); + + /* Now write out any static class variables (which may have since + learned how to be initialized). */ + while (pending_statics) + { + tree decl = TREE_VALUE (pending_statics); + if (TREE_USED (decl) == 1 + || TREE_READONLY (decl) == 0 + || DECL_INITIAL (decl) == 0) + rest_of_decl_compilation (decl, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), 1, 1); + pending_statics = TREE_CHAIN (pending_statics); + } + + this_time = get_run_time (); + parse_time -= this_time - start_time; + varconst_time += this_time - start_time; + + start_time = get_run_time (); + + /* Now delete from the chain of variables all virtual function tables. + We output them all ourselves, because each will be treated specially. */ + +#if 1 + /* The reason for pushing garbage onto the global_binding_level is to + ensure that we can slice out _DECLs which pertain to virtual function + tables. If the last thing pushed onto the global_binding_level was a + virtual function table, then slicing it out would slice away all the + decls (i.e., we lose the head of the chain). + + There are several ways of getting the same effect, from changing the + way that iterators over the chain treat the elements that pertain to + virtual function tables, moving the implementation of this code to + decl.c (where we can manipulate global_binding_level directly), + popping the garbage after pushing it and slicing away the vtable + stuff, or just leaving it alone. */ + + /* Make last thing in global scope not be a virtual function table. */ +#if 0 /* not yet, should get fixed properly later */ + vars = make_type_decl (get_identifier (" @%$#@!"), integer_type_node); +#else + vars = build_decl (TYPE_DECL, get_identifier (" @%$#@!"), integer_type_node); +#endif + DECL_IGNORED_P (vars) = 1; + SET_DECL_ARTIFICIAL (vars); + pushdecl (vars); +#endif + + walk_vtables ((void (*)())0, finish_vtable_vardecl); + if (flag_handle_signatures) + walk_sigtables ((void (*)())0, finish_sigtable_vardecl); + + for (vars = getdecls (); vars; vars = TREE_CHAIN (vars)) + { + if (TREE_CODE (vars) == THUNK_DECL) + emit_thunk (vars); + } + + { + int reconsider = 0; /* More may be referenced; check again */ + tree delayed = NULL_TREE; /* These might be referenced later */ + + /* Now write out inline functions which had their addresses taken and + which were not declared virtual and which were not declared `extern + inline'. */ + while (saved_inlines) + { + tree decl = TREE_VALUE (saved_inlines); + saved_inlines = TREE_CHAIN (saved_inlines); + /* Redefinition of a member function can cause DECL_SAVED_INSNS to be + 0; don't crash. */ + if (TREE_ASM_WRITTEN (decl) || DECL_SAVED_INSNS (decl) == 0) + continue; + if (DECL_FUNCTION_MEMBER_P (decl) && !TREE_PUBLIC (decl)) + { + tree ctype = DECL_CLASS_CONTEXT (decl); + if (CLASSTYPE_INTERFACE_KNOWN (ctype)) + { + TREE_PUBLIC (decl) = 1; + DECL_EXTERNAL (decl) + = (CLASSTYPE_INTERFACE_ONLY (ctype) + || (DECL_INLINE (decl) && ! flag_implement_inlines)); + } + } + if (TREE_PUBLIC (decl) + || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) + || flag_keep_inline_functions) + { + if (DECL_EXTERNAL (decl) + || (DECL_IMPLICIT_INSTANTIATION (decl) + && ! flag_implicit_templates)) + assemble_external (decl); + else + { + reconsider = 1; + temporary_allocation (); + output_inline_function (decl); + permanent_allocation (1); + } + } + else if (TREE_USED (decl) + || TREE_USED (DECL_ASSEMBLER_NAME (decl))) + delayed = tree_cons (NULL_TREE, decl, delayed); + } + + if (reconsider && delayed) + { + while (reconsider) + { + tree place; + reconsider = 0; + for (place = delayed; place; place = TREE_CHAIN (place)) + { + tree decl = TREE_VALUE (place); + if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) + && ! TREE_ASM_WRITTEN (decl)) + { + if (DECL_EXTERNAL (decl) + || (DECL_IMPLICIT_INSTANTIATION (decl) + && ! flag_implicit_templates)) + assemble_external (decl); + else + { + reconsider = 1; + temporary_allocation (); + output_inline_function (decl); + permanent_allocation (1); + } + } + } + } + } + } + + if (write_virtuals == 2) + { + /* Now complain about an virtual function tables promised + but not delivered. */ + while (pending_vtables) + { + if (TREE_PURPOSE (pending_vtables) == NULL_TREE) + error ("virtual function table for `%s' not defined", + IDENTIFIER_POINTER (TREE_VALUE (pending_vtables))); + pending_vtables = TREE_CHAIN (pending_vtables); + } + } + + permanent_allocation (1); + this_time = get_run_time (); + parse_time -= this_time - start_time; + varconst_time += this_time - start_time; + + if (flag_detailed_statistics) + dump_time_statistics (); +} + +/* This is something of the form 'A()()()()()+1' that has turned out to be an + expr. Since it was parsed like a type, we need to wade through and fix + that. Unfortunately, since operator() is left-associative, we can't use + tail recursion. In the above example, TYPE is `A', and DECL is + `()()()()()'. + + Maybe this shouldn't be recursive, but how often will it actually be + used? (jason) */ +tree +reparse_absdcl_as_expr (type, decl) + tree type, decl; +{ + /* do build_functional_cast (type, NULL_TREE) at bottom */ + if (TREE_OPERAND (decl, 0) == NULL_TREE) + return build_functional_cast (type, NULL_TREE); + + /* recurse */ + decl = reparse_decl_as_expr (type, TREE_OPERAND (decl, 0)); + + decl = build_x_function_call (decl, NULL_TREE, current_class_decl); + + if (TREE_CODE (decl) == CALL_EXPR && TREE_TYPE (decl) != void_type_node) + decl = require_complete_type (decl); + + return decl; +} + +/* This is something of the form `int ((int)(int)(int)1)' that has turned + out to be an expr. Since it was parsed like a type, we need to wade + through and fix that. Since casts are right-associative, we are + reversing the order, so we don't have to recurse. + + In the above example, DECL is the `(int)(int)(int)', and EXPR is the + `1'. */ +tree +reparse_absdcl_as_casts (decl, expr) + tree decl, expr; +{ + tree type; + + if (TREE_CODE (expr) == CONSTRUCTOR) + { + type = groktypename (TREE_VALUE (TREE_OPERAND (decl, 1))); + decl = TREE_OPERAND (decl, 0); + + if (IS_SIGNATURE (type)) + { + error ("cast specifies signature type"); + return error_mark_node; + } + + expr = digest_init (type, expr, (tree *) 0); + if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0) + { + int failure = complete_array_type (type, expr, 1); + if (failure) + my_friendly_abort (78); + } + } + + while (decl) + { + type = groktypename (TREE_VALUE (TREE_OPERAND (decl, 1))); + decl = TREE_OPERAND (decl, 0); + expr = build_c_cast (type, expr); + } + + return expr; +} + +/* Recursive helper function for reparse_decl_as_expr. It may be a good + idea to reimplement this using an explicit stack, rather than recursion. */ +static tree +reparse_decl_as_expr1 (decl) + tree decl; +{ + switch (TREE_CODE (decl)) + { + case IDENTIFIER_NODE: + return do_identifier (decl); + case INDIRECT_REF: + return build_x_indirect_ref + (reparse_decl_as_expr1 (TREE_OPERAND (decl, 0)), "unary *"); + case ADDR_EXPR: + return build_x_unary_op (ADDR_EXPR, + reparse_decl_as_expr1 (TREE_OPERAND (decl, 0))); + case BIT_NOT_EXPR: + return build_x_unary_op (BIT_NOT_EXPR, + reparse_decl_as_expr1 (TREE_OPERAND (decl, 0))); + case SCOPE_REF: + return build_offset_ref (TREE_OPERAND (decl, 0), TREE_OPERAND (decl, 1)); + case ARRAY_REF: + return grok_array_decl (reparse_decl_as_expr1 (TREE_OPERAND (decl, 0)), + TREE_OPERAND (decl, 1)); + default: + my_friendly_abort (5); + return NULL_TREE; + } +} + +/* This is something of the form `int (*a)++' that has turned out to be an + expr. It was only converted into parse nodes, so we need to go through + and build up the semantics. Most of the work is done by + reparse_decl_as_expr1, above. + + In the above example, TYPE is `int' and DECL is `*a'. */ +tree +reparse_decl_as_expr (type, decl) + tree type, decl; +{ + decl = build_tree_list (NULL_TREE, reparse_decl_as_expr1 (decl)); + return build_functional_cast (type, decl); +} + +/* This is something of the form `int (*a)' that has turned out to be a + decl. It was only converted into parse nodes, so we need to do the + checking that make_{pointer,reference}_declarator do. */ + +tree +finish_decl_parsing (decl) + tree decl; +{ + extern int current_class_depth; + + switch (TREE_CODE (decl)) + { + case IDENTIFIER_NODE: + return decl; + case INDIRECT_REF: + return make_pointer_declarator + (NULL_TREE, finish_decl_parsing (TREE_OPERAND (decl, 0))); + case ADDR_EXPR: + return make_reference_declarator + (NULL_TREE, finish_decl_parsing (TREE_OPERAND (decl, 0))); + case BIT_NOT_EXPR: + TREE_OPERAND (decl, 0) = finish_decl_parsing (TREE_OPERAND (decl, 0)); + return decl; + case SCOPE_REF: + push_nested_class (TREE_TYPE (TREE_OPERAND (decl, 0)), 3); + TREE_COMPLEXITY (decl) = current_class_depth; + return decl; + case ARRAY_REF: + TREE_OPERAND (decl, 0) = finish_decl_parsing (TREE_OPERAND (decl, 0)); + return decl; + default: + my_friendly_abort (5); + return NULL_TREE; + } +} + +tree +check_cp_case_value (value) + tree value; +{ + if (value == NULL_TREE) + return value; + + /* build_c_cast puts on a NOP_EXPR to make a non-lvalue. + Strip such NOP_EXPRs. */ + if (TREE_CODE (value) == NOP_EXPR + && TREE_TYPE (value) == TREE_TYPE (TREE_OPERAND (value, 0))) + value = TREE_OPERAND (value, 0); + + if (TREE_READONLY_DECL_P (value)) + { + value = decl_constant_value (value); + /* build_c_cast puts on a NOP_EXPR to make a non-lvalue. + Strip such NOP_EXPRs. */ + if (TREE_CODE (value) == NOP_EXPR + && TREE_TYPE (value) == TREE_TYPE (TREE_OPERAND (value, 0))) + value = TREE_OPERAND (value, 0); + } + value = fold (value); + + if (TREE_CODE (value) != INTEGER_CST + && value != error_mark_node) + { + cp_error ("case label `%E' does not reduce to an integer constant", + value); + value = error_mark_node; + } + else + /* Promote char or short to int. */ + value = default_conversion (value); + + constant_expression_warning (value); + + return value; +} |
