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-rw-r--r--src/common/util.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/common/util.c b/src/common/util.c
index d153df8cf1..13c55b2888 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -258,7 +258,9 @@ _tor_malloc_roundup(size_t *sizep DMALLOC_PARAMS)
#ifdef HAVE_MALLOC_GOOD_SIZE
*sizep = malloc_good_size(*sizep);
return _tor_malloc(*sizep DMALLOC_FN_ARGS);
-#elif defined(HAVE_MALLOC_USABLE_SIZE) && !defined(USE_DMALLOC)
+#elif 0 && defined(HAVE_MALLOC_USABLE_SIZE) && !defined(USE_DMALLOC)
+ /* Never use malloc_usable_size(); it makes valgrind really unhappy,
+ * and doesn't win much in terms of usable space where it exists. */
void *result = _tor_malloc(*sizep DMALLOC_FN_ARGS);
*sizep = malloc_usable_size(result);
return result;