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Fix a strict aliasing violation.

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This commit is contained in:
Jason Evans 2015-08-12 16:38:20 -07:00
parent 828d919b5e
commit 56af64dc19
1 changed files with 6 additions and 1 deletions
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7
src/chunk.c
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@ -89,7 +89,12 @@ chunk_hooks_set(arena_t *arena, const chunk_hooks_t *chunk_hooks)
* correctness, so they perform unlocked reads. * correctness, so they perform unlocked reads.
*/ */
#define ATOMIC_COPY_HOOK(n) do { \ #define ATOMIC_COPY_HOOK(n) do { \
atomic_write_p((void **)&arena->chunk_hooks.n, chunk_hooks->n); \ union { \
chunk_##n##_t **n; \
void **v; \
} u; \
u.n = &arena->chunk_hooks.n; \
atomic_write_p(u.v, chunk_hooks->n); \
} while (0) } while (0)
ATOMIC_COPY_HOOK(alloc); ATOMIC_COPY_HOOK(alloc);
ATOMIC_COPY_HOOK(dalloc); ATOMIC_COPY_HOOK(dalloc);