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nedmalloc: Fix a compile warning (exposed as error) with GCC 4.7.2

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On MinGW, GCC 4.7.2 complains about

    operation on 'p->m[end]' may be undefined

Fix this by replacing the faulty lines with those of 69825ca from

    https://github.com/ned14/nedmalloc/blob/master/nedmalloc.c

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Sebastian Schuberth 2012-12-11 21:34:51 +01:00 committed by Junio C Hamano
parent 7e0651a630
commit 8e679e08a6
1 changed files with 4 additions and 1 deletions
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5
compat/nedmalloc/nedmalloc.c
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@ -603,7 +603,10 @@ static NOINLINE mstate FindMSpace(nedpool *p, threadcache *tc, int *lastUsed, si
}
/* We really want to make sure this goes into memory now but we
have to be careful of breaking aliasing rules, so write it twice */
*((volatile struct malloc_state **) &p->m[end])=p->m[end]=temp;
{
volatile struct malloc_state **_m=(volatile struct malloc_state **) &p->m[end];
*_m=(p->m[end]=temp);
}
ACQUIRE_LOCK(&p->m[end]->mutex);
/*printf("Created mspace idx %d\n", end);*/
RELEASE_LOCK(&p->mutex);