[Bug c/118308] compiling code that should return without a return statement

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118308

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
It is only undefined behavior if you use the value from a function which has a
return type but does not return a value.

The example you have in comment #0 is 100% well defined C code.

Note C++ is different in that if you fall through without a return value, then
it would be undefined at the point of the fall through.  So the code in comment
#0 is undefined C++ code.