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Diffstat (limited to 'gcc/c-family/c-opts.c')
| -rw-r--r-- | gcc/c-family/c-opts.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c index 5fe3132..c5a699d 100644 --- a/gcc/c-family/c-opts.c +++ b/gcc/c-family/c-opts.c @@ -870,6 +870,10 @@ c_common_post_options (const char **pfilename) warn_shift_negative_value = (extra_warnings && (cxx_dialect >= cxx11 || flag_isoc99)); + /* -Wregister is enabled by default in C++17. */ + if (!global_options_set.x_warn_register) + warn_register = cxx_dialect >= cxx1z; + /* Declone C++ 'structors if -Os. */ if (flag_declone_ctor_dtor == -1) flag_declone_ctor_dtor = optimize_size; |