On Wed, 2013-07-17 at 16:40 +0800, Jesse Zhang wrote:
> Fix failures when building with -fno-omit-frame-pointer (and without
> optimization, i.e. -O0):
>
> In file included from atomic_ops.h:212:0,
> from atomic_ops_stack.h:32,
> from atomic_ops_stack.c:23:
> atomic_ops/sysdeps/gcc/x86.h: In function
> 'AO_compare_double_and_swap_double_full':
> atomic_ops/sysdeps/gcc/x86.h:148:3: error: 'asm' operand has impossible
> constraints
> __asm__ __volatile__("xchg %%ebx,%6;" /* swap GOT ptr and new_val1 */
This seems like it must be a bug in either GCC or the libatomic-ops
source code, and whichever one has the bug ought to be fixed. Forcing
-fomit-frame-pointer might be ok as a temporary measure but it doesn't
seem like a very good long-term solution.
p.
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