http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43772
--- Comment #8 from eggert at gnu dot org 2011-07-15 03:01:42 UTC ---
The problem persists in GCC 4.6.1 (x86-64):
$ cat >t.c
long long
emacs_lseek (int fd, long long offset, int whence)
{
return -1-9223372036854775807LL <= offset && offset <= 9223372036854775807LL;
}
$ gcc -S -Wlogical-op t.c
t.c: In function 'emacs_lseek':
t.c:4:3: warning: logical 'and' of mutually exclusive tests is always false
[-Wlogical-op]
