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mcheck Fix malloc_usable_size [BZ #22057]

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Interpose malloc_usable_size to return the correct mcheck value for
malloc_usable_size.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Siddhesh Poyarekar
2021-07-22 18:38:16 +05:30
parent 1e5a5866cb
commit 6856975ed4
3 changed files with 9 additions and 3 deletions
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6
malloc/mcheck-impl.c
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@@ -404,3 +404,9 @@ __mcheck_initialize (void (*func) (enum mcheck_status), bool in_pedantic)
pedantic = in_pedantic;
return 0;
}
static int
mcheck_usable_size (struct hdr *h)
{
return (h - 1)->size;
}