diff options
Diffstat (limited to 'contrib/gcc/c-decl.c')
| -rw-r--r-- | contrib/gcc/c-decl.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/gcc/c-decl.c b/contrib/gcc/c-decl.c index 3cdd69b..7b3833c 100644 --- a/contrib/gcc/c-decl.c +++ b/contrib/gcc/c-decl.c @@ -453,10 +453,17 @@ add_stmt (tree t) with __attribute__((deprecated)). An object declared as __attribute__((deprecated)) suppresses warnings of uses of other deprecated items. */ +/* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ +/* Also add an __attribute__((unavailable)). An object declared as + __attribute__((unavailable)) suppresses any reports of being + declared with unavailable or deprecated items. */ +/* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ enum deprecated_states { DEPRECATED_NORMAL, DEPRECATED_SUPPRESS + /* APPLE LOCAL "unavailable" attribute (radar 2809697) */ + , DEPRECATED_UNAVAILABLE_SUPPRESS }; static enum deprecated_states deprecated_state = DEPRECATED_NORMAL; @@ -1709,6 +1716,12 @@ merge_decls (tree newdecl, tree olddecl, tree newtype, tree oldtype) if (TREE_DEPRECATED (newdecl)) TREE_DEPRECATED (olddecl) = 1; + /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ + /* Merge unavailableness. */ + if (TREE_UNAVAILABLE (newdecl)) + TREE_UNAVAILABLE (olddecl) = 1; + /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ + /* Keep source location of definition rather than declaration and of prototype rather than non-prototype unless that prototype is built-in. */ @@ -3222,8 +3235,36 @@ start_decl (struct c_declarator *declarator, struct c_declspecs *declspecs, /* An object declared as __attribute__((deprecated)) suppresses warnings of uses of other deprecated items. */ + /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ + /* An object declared as __attribute__((unavailable)) suppresses + any reports of being declared with unavailable or deprecated + items. An object declared as __attribute__((deprecated)) + suppresses warnings of uses of other deprecated items. */ +#ifdef A_LESS_INEFFICENT_WAY /* which I really don't want to do! */ if (lookup_attribute ("deprecated", attributes)) deprecated_state = DEPRECATED_SUPPRESS; + else if (lookup_attribute ("unavailable", attributes)) + deprecated_state = DEPRECATED_UNAVAILABLE_SUPPRESS; +#else /* a more efficient way doing what lookup_attribute would do */ + tree a; + + for (a = attributes; a; a = TREE_CHAIN (a)) + { + tree name = TREE_PURPOSE (a); + if (TREE_CODE (name) == IDENTIFIER_NODE) + if (is_attribute_p ("deprecated", name)) + { + deprecated_state = DEPRECATED_SUPPRESS; + break; + } + if (is_attribute_p ("unavailable", name)) + { + deprecated_state = DEPRECATED_UNAVAILABLE_SUPPRESS; + break; + } + } +#endif + /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ decl = grokdeclarator (declarator, declspecs, NORMAL, initialized, NULL); @@ -4087,6 +4128,11 @@ grokdeclarator (const struct c_declarator *declarator, /* If this looks like a function definition, make it one, even if it occurs where parms are expected. Then store_parm_decls will reject it and not use it as a parm. */ + /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ + if (declspecs->unavailable_p) + error_unavailable_use (declspecs->type); + else + /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ if (decl_context == NORMAL && !funcdef_flag && current_scope->parm_flag) decl_context = PARM; @@ -7267,6 +7313,8 @@ build_null_declspecs (void) ret->tag_defined_p = false; ret->explicit_signed_p = false; ret->deprecated_p = false; + /* APPLE LOCAL "unavailable" attribute (radar 2809697) */ + ret->unavailable_p = false; ret->default_int_p = false; ret->long_p = false; ret->long_long_p = false; @@ -7330,6 +7378,11 @@ declspecs_add_type (struct c_declspecs *specs, struct c_typespec spec) if (TREE_DEPRECATED (type)) specs->deprecated_p = true; + /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ + if (TREE_UNAVAILABLE (type)) + specs->unavailable_p = true; + /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ + /* Handle type specifier keywords. */ if (TREE_CODE (type) == IDENTIFIER_NODE && C_IS_RESERVED_WORD (type)) { |
