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| author | Jakub Jelinek <jakub@redhat.com> | 2006-10-12 11:25:59 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2006-10-12 11:25:59 +0200 |
| commit | de000d222aa7f081441b9d48eddff9301fc3d8b2 (patch) | |
| tree | 8c96d7cea97a044e3c22146d563038821cbac200 /libcpp | |
| parent | 1e96b1c34fc5653ab1cd75b8e19034f5f56a1f84 (diff) | |
| download | gcc-de000d222aa7f081441b9d48eddff9301fc3d8b2.zip gcc-de000d222aa7f081441b9d48eddff9301fc3d8b2.tar.gz gcc-de000d222aa7f081441b9d48eddff9301fc3d8b2.tar.bz2 | |
re PR preprocessor/28709 (Bad diagnostic pasting tokens with ##)
PR preprocessor/28709
* macro.c (paste_tokens): Do error reporting here, use BUF with the
spelled LHS token as opposed to spelling it again.
(paste_all_tokens): Don't report errors here, just break on failure.
* gcc.dg/cpp/paste14.c: New test.
From-SVN: r117664
Diffstat (limited to 'libcpp')
| -rw-r--r-- | libcpp/ChangeLog | 7 | ||||
| -rw-r--r-- | libcpp/macro.c | 35 |
2 files changed, 25 insertions, 17 deletions
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog index 5871e95..ae87e0e 100644 --- a/libcpp/ChangeLog +++ b/libcpp/ChangeLog @@ -1,3 +1,10 @@ +2006-10-12 Jakub Jelinek <jakub@redhat.com> + + PR preprocessor/28709 + * macro.c (paste_tokens): Do error reporting here, use BUF with the + spelled LHS token as opposed to spelling it again. + (paste_all_tokens): Don't report errors here, just break on failure. + 2006-10-10 Brooks Moses <bmoses@stanford.edu> * Makefile.in: Added empty "pdf" target. diff --git a/libcpp/macro.c b/libcpp/macro.c index b29f3a0..be50c11 100644 --- a/libcpp/macro.c +++ b/libcpp/macro.c @@ -430,15 +430,14 @@ stringify_arg (cpp_reader *pfile, macro_arg *arg) static bool paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs) { - unsigned char *buf, *end; + unsigned char *buf, *end, *lhsend; const cpp_token *lhs; unsigned int len; - bool valid; lhs = *plhs; len = cpp_token_len (lhs) + cpp_token_len (rhs) + 1; buf = (unsigned char *) alloca (len); - end = cpp_spell_token (pfile, lhs, buf, false); + end = lhsend = cpp_spell_token (pfile, lhs, 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 @@ -455,10 +454,22 @@ 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); - valid = pfile->buffer->cur == pfile->buffer->rlimit; - _cpp_pop_buffer (pfile); + if (pfile->buffer->cur != pfile->buffer->rlimit) + { + _cpp_pop_buffer (pfile); + _cpp_backup_tokens (pfile, 1); + *lhsend = '\0'; + + /* Mandatory error for all apart from assembler. */ + if (CPP_OPTION (pfile, lang) != CLK_ASM) + cpp_error (pfile, CPP_DL_ERROR, + "pasting \"%s\" and \"%s\" does not give a valid preprocessing token", + buf, cpp_token_as_text (pfile, rhs)); + return false; + } - return valid; + _cpp_pop_buffer (pfile); + return true; } /* Handles an arbitrarily long sequence of ## operators, with initial @@ -490,17 +501,7 @@ paste_all_tokens (cpp_reader *pfile, const cpp_token *lhs) abort (); if (!paste_tokens (pfile, &lhs, rhs)) - { - _cpp_backup_tokens (pfile, 1); - - /* Mandatory error for all apart from assembler. */ - if (CPP_OPTION (pfile, lang) != CLK_ASM) - cpp_error (pfile, CPP_DL_ERROR, - "pasting \"%s\" and \"%s\" does not give a valid preprocessing token", - cpp_token_as_text (pfile, lhs), - cpp_token_as_text (pfile, rhs)); - break; - } + break; } while (rhs->flags & PASTE_LEFT); |