On 12/16/18 6:02 AM, Jan Engelhardt wrote:
> Though illegal in standard C, clang does support the extension:
>
> 11:59 a4:~ > echo -en 'int main() { void *x = &x; x = x + 1; }' | clang
> -x c -c -o /dev/null - -Wall
> 11:59 a4:~ >
> (clang 6.0.1)
> fra
Sorry, I should have clarified: the source files in question are C++,
not C. clang does indeed support the extension in C, but it's a strict
error in C++ even with extern "C":
$ echo -en 'int main() { void *x = &x; x = x + 1; }' | clang -x 'c++' -
<stdin>:1:34: error: arithmetic on a pointer to void
int main() { void *x = &x; x = x + 1; }
~ ^
