From 0c2873e726a6398794f6955816d862e6b8c9e849 Mon Sep 17 00:00:00 2001
From: Dragos Oancea <dragos@signalwire.com>
Date: Tue, 25 Feb 2020 17:51:09 +0000
Subject: [PATCH] [mod_amr] scan-build: Array access (from variable 'tocs')
 results in a null pointer dereference - switch_amr_unpack_oa()

---
 src/mod/codecs/mod_amr/mod_amr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mod/codecs/mod_amr/mod_amr.c b/src/mod/codecs/mod_amr/mod_amr.c
index b36b4c9aa3..67426b81c8 100644
--- a/src/mod/codecs/mod_amr/mod_amr.c
+++ b/src/mod/codecs/mod_amr/mod_amr.c
@@ -150,6 +150,9 @@ static switch_bool_t switch_amr_unpack_oa(unsigned char *buf, uint8_t *tmp, int
 	int index;
 	int framesz;
 
+	if (!buf) {
+		return SWITCH_FALSE;
+	}
 	buf++; /* CMR skip */
 	tocs = buf;
 	index = ((tocs[0]>>3) & 0xf);