https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24016
Mikhail Maltsev <miyuki at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |miyuki at gcc dot gnu.org
--- Comment #3 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
It seems to me that __extension__ also inhibits some other useful warnings. For
example:
#include <string.h>
int foo(void *x) {
return strcmp(x + 1, "test");
}
does not cause warnings when compiled with -Wpointer-arith -O1 (glibc v. 2.17).
It can be reduced to:
int foo(void *x) {
return __extension__({ __builtin_strcmp(x + 1, "test"); });
}
Note, that we do warn about
int foo(void *x) {
return ({ __builtin_strcmp(x + 1, "test"); });
}
