[PATCH 2/9] mcheck: Use memset/memcpy instead of MALLOC_ZERO/MALLOC_COPY for mcheck.

Eugene Uriev
2024-03-31T21:00:29Z

These fast helpers sometimes breach mem-chunk boundaries.
Thus they trigger mcheck alarm. Standard ones are accurate though.

Signed-off-by: Eugene Uriev <eugeneuriev@gmail.com>
---

common/dlmalloc.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index 40acd3dfa5..0813e7e8b1 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -34,6 +34,10 @@ DECLARE_GLOBAL_DATA_PTR;

#ifdef MCHECK_HEAP_PROTECTION
#define STATIC_IF_MCHECK static
+ #undef MALLOC_COPY
+ #undef MALLOC_ZERO
+static inline void MALLOC_ZERO(void *p, size_t sz) { memset(p, 0, sz); }
+static inline void MALLOC_COPY(void *dest, const void *src, size_t sz) { memcpy(dest, src, sz); }
#else
#define STATIC_IF_MCHECK
#define mALLOc_impl mALLOc
--
2.25.1