http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60021
--- Comment #1 from Chengnian Sun <chengniansun at gmail dot com> ---
Interestingly, if I remove the typedef "typedef long int64_t;", the warning is
gone.
$: cat s.c
void fn1(unsigned, char, long);
void fn1(unsigned p_26, char c, long l) { /* */
const char l_1051 = 0;
long *l_1059 = &l;
char *l_1062 = &c;
p_26 < (*l_1062 = (1L == (*l_1059 = 0)) <= l_1051);
}
$: gcc-trunk -c -O0 -Wsign-compare s.c
$: gcc-trunk -c -O1 -Wsign-compare s.c
$
