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| author | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2014-08-29 15:28:45 +0000 |
|---|---|---|
| committer | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2014-08-29 15:28:45 +0000 |
| commit | b753b37bd6a43a9d1cc2433f57a091c213380147 (patch) | |
| tree | bcdc43baa9947832913a10b03e07131bc343844b /libcpp/directives.c | |
| parent | ef0981b8aea59164340d4d57b4e48b6810cc41fb (diff) | |
| download | gcc-b753b37bd6a43a9d1cc2433f57a091c213380147.zip gcc-b753b37bd6a43a9d1cc2433f57a091c213380147.tar.gz gcc-b753b37bd6a43a9d1cc2433f57a091c213380147.tar.bz2 | |
macro.c (warn_of_redefinition): Suppress warnings for builtins that lack the NODE_WARN flag...
libcpp/ChangeLog:
2014-08-29 Manuel López-Ibáñez <manu@gcc.gnu.org>
* macro.c (warn_of_redefinition): Suppress warnings for builtins
that lack the NODE_WARN flag, unless Wbuiltin-macro-redefined.
(_cpp_create_definition): Use Wbuiltin-macro-redefined for
builtins that lack the NODE_WARN flag.
* directives.c (do_undef): Likewise.
* init.c (cpp_init_special_builtins): Do not change flags
depending on Wbuiltin-macro-redefined.
gcc/c-family/ChangeLog:
2014-08-29 Manuel López-Ibáñez <manu@gcc.gnu.org>
* c.opt (Wbuiltin-macro-redefined): Use CPP, Var and Init.
* c-opts.c (c_common_handle_option): Do not handle here.
From-SVN: r214730
Diffstat (limited to 'libcpp/directives.c')
| -rw-r--r-- | libcpp/directives.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libcpp/directives.c b/libcpp/directives.c index 3486a48..631557d 100644 --- a/libcpp/directives.c +++ b/libcpp/directives.c @@ -610,6 +610,11 @@ do_undef (cpp_reader *pfile) if (node->flags & NODE_WARN) cpp_error (pfile, CPP_DL_WARNING, "undefining \"%s\"", NODE_NAME (node)); + else if ((node->flags & NODE_BUILTIN) + && CPP_OPTION (pfile, warn_builtin_macro_redefined)) + cpp_warning_with_line (pfile, CPP_W_BUILTIN_MACRO_REDEFINED, + pfile->directive_line, 0, + "undefining \"%s\"", NODE_NAME (node)); if (CPP_OPTION (pfile, warn_unused_macros)) _cpp_warn_if_unused_macro (pfile, node, NULL); |