[Pkg-gauche-devel] Bug#779949: gauche: possible data race around PORT_UNLOCK

[James Cowgill]

Source: gauche
Version: 0.9.4-5
Severity: normal
Tags: patch

Hi,

After applying the libatomic-ops patch [1], gauche almost finishes
building on mips64el but it sometimes fails the "threads" test. I found
this was caused by a possible data race in the PORT_UNLOCK macro because
it doesn't issue a memory barrier when unlocking the lock (and so
earlier stores might be moved AFTER the unlock macro).

I've attached a patch which fixes this. I've tried to add the equivalent
for Windows (if you wanted to upstream it) but I haven't tested it
there.

Thanks,
James

[1] https://bugs.debian.org/774886
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