https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105499
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords|diagnostic |documentation
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
__extension__ disables all compatibility warnings.
This is by design really as headers sometimes needs to be written using C code
and need to turn off these warnings.
The documentation should mention that though like it does for -Wc90-c99-compat
, -Wc99-c11-compat and -Wc11-c2x-compat .
https://gcc.gnu.org/onlinedocs/gcc-12.2.0/gcc/Warning-Options.html#index-Wc_002b_002b-compat
