diff options
Diffstat (limited to 'contrib/gcclibs/libcpp/macro.c')
| -rw-r--r-- | contrib/gcclibs/libcpp/macro.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/contrib/gcclibs/libcpp/macro.c b/contrib/gcclibs/libcpp/macro.c index d294f04..e9d4681 100644 --- a/contrib/gcclibs/libcpp/macro.c +++ b/contrib/gcclibs/libcpp/macro.c @@ -1,6 +1,7 @@ /* Part of CPP library. (Macro and #define handling.) Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003, 2004, 2005, + 2006 Free Software Foundation, Inc. Written by Per Bothner, 1994. Based on CCCP program by Paul Rubin, June 1986 Adapted to ANSI C, Richard Stallman, Jan 1987 @@ -438,19 +439,18 @@ static bool paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs) { unsigned char *buf, *end, *lhsend; - const cpp_token *lhs; + cpp_token *lhs; unsigned int len; - lhs = *plhs; - len = cpp_token_len (lhs) + cpp_token_len (rhs) + 1; + len = cpp_token_len (*plhs) + cpp_token_len (rhs) + 1; buf = (unsigned char *) alloca (len); - end = lhsend = cpp_spell_token (pfile, lhs, buf, false); + end = lhsend = cpp_spell_token (pfile, *plhs, buf, false); /* Avoid comment headers, since they are still processed in stage 3. It is simpler to insert a space here, rather than modifying the lexer to ignore comments in some circumstances. Simply returning false doesn't work, since we want to clear the PASTE_LEFT flag. */ - if (lhs->type == CPP_DIV && rhs->type != CPP_EQ) + if ((*plhs)->type == CPP_DIV && rhs->type != CPP_EQ) *end++ = ' '; end = cpp_spell_token (pfile, rhs, end, false); *end = '\n'; @@ -460,13 +460,22 @@ paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs) /* Set pfile->cur_token as required by _cpp_lex_direct. */ pfile->cur_token = _cpp_temp_token (pfile); - *plhs = _cpp_lex_direct (pfile); + lhs = _cpp_lex_direct (pfile); if (pfile->buffer->cur != pfile->buffer->rlimit) { + source_location saved_loc = lhs->src_loc; + _cpp_pop_buffer (pfile); _cpp_backup_tokens (pfile, 1); *lhsend = '\0'; + /* We have to remove the PASTE_LEFT flag from the old lhs, but + we want to keep the new location. */ + *lhs = **plhs; + *plhs = lhs; + lhs->src_loc = saved_loc; + lhs->flags &= ~PASTE_LEFT; + /* Mandatory error for all apart from assembler. */ if (CPP_OPTION (pfile, lang) != CLK_ASM) cpp_error (pfile, CPP_DL_ERROR, @@ -475,6 +484,7 @@ paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs) return false; } + *plhs = lhs; _cpp_pop_buffer (pfile); return true; } @@ -1405,10 +1415,12 @@ alloc_expansion_token (cpp_reader *pfile, cpp_macro *macro) static cpp_token * lex_expansion_token (cpp_reader *pfile, cpp_macro *macro) { - cpp_token *token; + cpp_token *token, *saved_cur_token; + saved_cur_token = pfile->cur_token; pfile->cur_token = alloc_expansion_token (pfile, macro); token = _cpp_lex_direct (pfile); + pfile->cur_token = saved_cur_token; /* Is this a parameter? */ if (token->type == CPP_NAME @@ -1597,18 +1609,12 @@ _cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node) ok = _cpp_create_trad_definition (pfile, macro); else { - cpp_token *saved_cur_token = pfile->cur_token; - ok = create_iso_definition (pfile, macro); - /* Restore lexer position because of games lex_expansion_token() - plays lexing the macro. We set the type for SEEN_EOL() in - directives.c. + /* We set the type for SEEN_EOL() in directives.c. Longer term we should lex the whole line before coming here, and just copy the expansion. */ - saved_cur_token[-1].type = pfile->cur_token[-1].type; - pfile->cur_token = saved_cur_token; /* Stop the lexer accepting __VA_ARGS__. */ pfile->state.va_args_ok = 0; |
