Bruno Haible <br...@clisp.org> writes:
>> Do gcc and clang not warn about this?
>
> With option '-pedantic', they warn, yes:
>
> $ cat foo.c
> extern void foobar (int);
> void foo (int x) { return foobar (x); }
>
> $ gcc -Wall -S -pedantic foo.c
> foo.c: In function ‘foo’:
> foo.c:2:27: warning: ISO C forbids ‘return’ with expression, in function
> returning void [-Wpedantic]
> 2 | void foo (int x) { return foobar (x); }
> | ^~~~~~~~~~
>
> $ clang -Wall -S -pedantic foo.c
> foo.c:2:20: warning: void function 'foo' should not return void expression
> [-Wpedantic]
> 2 | void foo (int x) { return foobar (x); }
> | ^ ~~~~~~~~~~
>
> I thought that 'return' of a void expression was documented as a GCC
> extension. But I can't find it in the documentation now.
Interesting, good to know. Thanks for the info.
Collin
