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devel/apr bug #51851
One of my colleagues was hit by this bug:
I can't reproduce it on -current amd64 with gcc3 even with a patched
testatomic.c but I see a different assembly.
a0: 48 87 37 xchg %rsi,(%rdi)
a3: c3 retq
a0: 48 89 f0 mov %rsi,%rax
a3: 48 87 07 xchg %rax,(%rdi)
a6: c3 retq
Original doesn't look right.
I'm like to add the patch if there are no objections.
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