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authorSverker Eriksson <[email protected]>2018-10-15 15:55:13 +0200
committerSverker Eriksson <[email protected]>2018-10-15 15:55:13 +0200
commit1801a42d032bf43b1e7bdb54e03ec4617a80fb0d (patch)
treec0e11687c2191d3d388deeb64717c219f0a4e6ca
parent8018680cc1977ac2d70c070a5761cfe2db914821 (diff)
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erts: Fix bug in debug_free for NULL pointer
causing ASSERT in sys_memset to fail.
-rw-r--r--erts/emulator/beam/erl_alloc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 8fe1ccb758..9e36d5e0d1 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -4030,6 +4030,9 @@ debug_free(ErtsAlcType_t n, void *extra, void *ptr)
ASSERT(ERTS_ALC_N_MIN <= n && n <= ERTS_ALC_N_MAX);
+ if (!ptr)
+ return;
+
dptr = check_memory_fence(ptr, &size, n, ERTS_ALC_O_FREE);
#ifdef ERTS_ALC_A_EXEC