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-rw-r--r--gcc/c-family/c-opts.cc9
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/c-family/c-opts.cc b/gcc/c-family/c-opts.cc
index c652e82..3fb12b9 100644
--- a/gcc/c-family/c-opts.cc
+++ b/gcc/c-family/c-opts.cc
@@ -959,6 +959,15 @@ c_common_post_options (const char **pfilename)
if (warn_enum_compare == -1)
warn_enum_compare = c_dialect_cxx () ? 1 : 0;
+ /* For C++26 default to -Wkeyword-macro if -Wpedantic. */
+ if (cxx_dialect >= cxx26 && pedantic)
+ {
+ SET_OPTION_IF_UNSET (&global_options, &global_options_set,
+ warn_keyword_macro, 1);
+ if (warn_keyword_macro)
+ cpp_opts->cpp_warn_keyword_macro = warn_keyword_macro;
+ }
+
/* -Wpacked-bitfield-compat is on by default for the C languages. The
warning is issued in stor-layout.cc which is not part of the front-end so
we need to selectively turn it on here. */