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0469-erts-Fix-bug-in-debug_free-for-NULL-pointe...
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File 0469-erts-Fix-bug-in-debug_free-for-NULL-pointer.patch of Package erlang
From 1801a42d032bf43b1e7bdb54e03ec4617a80fb0d Mon Sep 17 00:00:00 2001 From: Sverker Eriksson <sverker@erlang.org> Date: Mon, 15 Oct 2018 15:55:13 +0200 Subject: [PATCH] erts: Fix bug in debug_free for NULL pointer causing ASSERT in sys_memset to fail. --- erts/emulator/beam/erl_alloc.c | 3 +++ 1 file changed, 3 insertions(+) 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 @@ -4110,6 +4110,9 @@ 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); sys_memset((void *) dptr, n, size + FENCE_SZ); -- 2.16.4
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