[EMAIL PROTECTED] gcc]$ cat /tmp/x.c
#include <stdio.h>
#ifdef OLD
extern int __sync_bool_compare_and_swap_di (long *, long, long);
#else
#define __sync_bool_compare_and_swap_di __sync_bool_compare_and_swap
#endif
int
foo (long *x)
{
long address = *x;
if (!__sync_bool_compare_and_swap_di (x, address, (address | 1)))
return 0;
else
return 1;
}
int
main ()
{
long val = 0;
int ret;
printf ("val: 0x%lx\n", val);
ret = foo (&val);
printf ("ret: %d: val: 0x%lx\n", ret, val);
return;
}
[EMAIL PROTECTED] gcc]$ ./xgcc -B./ -O2 /tmp/x.c
[EMAIL PROTECTED] gcc]$ ./a.out
val: 0x0
ret: 1: val: 0x1
[EMAIL PROTECTED] gcc]$ ./xgcc -B./ -O2 /tmp/x.c -m32
/tmp/ccQy8ACO.o: In function `foo':
x.c:(.text+0x1c): undefined reference to `__sync_bool_compare_and_swap_4'
collect2: ld returned 1 exit status
--
Summary: __sync_bool_compare_and_swap doesn't work with -m32
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl at lucon dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21097
