https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108476
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason it is enabled by default for C++ is that the 2 languages differ
significantly in this regard. Falling through the end of a non-void function
in C++ is undefined behavior, in C it is not, in C it is only UB if the caller
actually uses the uninitialized return value (which is much harder to warn
about).
And in C it is enabled in -Wall, which you should use anyway if you care about
warnings.
