From aa15994c7f4dc447fe7ca2a60ca32b99e7036e47 Mon Sep 17 00:00:00 2001 From: Seven Du Date: Sat, 6 Sep 2014 18:29:19 +0800 Subject: [PATCH] fix return value --- src/switch_cpp.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/switch_cpp.cpp b/src/switch_cpp.cpp index 2702862027..16179cfb8a 100644 --- a/src/switch_cpp.cpp +++ b/src/switch_cpp.cpp @@ -542,8 +542,10 @@ SWITCH_DECLARE(const char *) Stream::read(int *len) buff = stream_p->read_function(stream_p, len); - if (!buff) return NULL; - if (len < 0) return NULL; + if (!buff || *len <= 0) { + *len = 0; + return NULL; + } return (const char *)buff; }