From 0a04504f0eee025f02a405ff951f4ff5dea80345 Mon Sep 17 00:00:00 2001
From: Doug Hogan <hogand@users.noreply.github.com>
Date: Mon, 7 Jan 2019 06:44:29 -0800
Subject: Revamp hmac_context_dtor()
Make it NULL safe.
---
lib/crypto/c_src/hmac.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
(limited to 'lib')
diff --git a/lib/crypto/c_src/hmac.c b/lib/crypto/c_src/hmac.c
index 143cde90e1..6ddbd2c59a 100644
--- a/lib/crypto/c_src/hmac.c
+++ b/lib/crypto/c_src/hmac.c
@@ -84,11 +84,17 @@ ERL_NIF_TERM hmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
static void hmac_context_dtor(ErlNifEnv* env, struct hmac_context *obj)
{
+ if (obj == NULL)
+ return;
+
if (obj->alive) {
- HMAC_CTX_free(obj->ctx);
+ if (obj->ctx)
+ HMAC_CTX_free(obj->ctx);
obj->alive = 0;
}
- enif_mutex_destroy(obj->mtx);
+
+ if (obj->mtx != NULL)
+ enif_mutex_destroy(obj->mtx);
}
ERL_NIF_TERM hmac_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
--
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