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commit 3640758943c856268bc12a3307838c2a65d2f9ea
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Mon Feb 4 23:46:58 2019 +0000
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Fix assertion in malloc.c:tcache_get.
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One of the warnings that appears with -Wextra is "ordered comparison
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of pointer with integer zero" in malloc.c:tcache_get, for the
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assertion:
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assert (tcache->entries[tc_idx] > 0);
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Indeed, a "> 0" comparison does not make sense for
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tcache->entries[tc_idx], which is a pointer. My guess is that
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tcache->counts[tc_idx] is what's intended here, and this patch changes
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the assertion accordingly.
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Tested for x86_64.
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* malloc/malloc.c (tcache_get): Compare tcache->counts[tc_idx]
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with 0, not tcache->entries[tc_idx].
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(cherry picked from commit 77dc0d8643aa99c92bf671352b0a8adde705896f)
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diff --git a/malloc/malloc.c b/malloc/malloc.c
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index 92239b3324584060..998879aededf0d7c 100644
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--- a/malloc/malloc.c
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+++ b/malloc/malloc.c
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@@ -2948,7 +2948,7 @@ tcache_get (size_t tc_idx)
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{
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tcache_entry *e = tcache->entries[tc_idx];
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assert (tc_idx < TCACHE_MAX_BINS);
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- assert (tcache->entries[tc_idx] > 0);
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+ assert (tcache->counts[tc_idx] > 0);
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tcache->entries[tc_idx] = e->next;
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--(tcache->counts[tc_idx]);
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e->key = NULL;
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