From 86eee85daddb682fa072c2e2657c90a514b855e3 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Fri, 10 Jul 2015 09:31:24 +0200 Subject: bytestream2: set the reader to the end when reading more than available This prevents possible infinite loops with the calling code along the lines of while (bytestream2_get_bytes_left()) { ... }, where the reader does not advance. CC: libav-stable@libav.org --- libavcodec/bytestream.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'libavcodec/bytestream.h') diff --git a/libavcodec/bytestream.h b/libavcodec/bytestream.h index 3eab225f9c..cb3573b869 100644 --- a/libavcodec/bytestream.h +++ b/libavcodec/bytestream.h @@ -70,8 +70,10 @@ static av_always_inline type bytestream2_get_ ## name ## u(GetByteContext *g) \ } \ static av_always_inline type bytestream2_get_ ## name(GetByteContext *g) \ { \ - if (g->buffer_end - g->buffer < bytes) \ + if (g->buffer_end - g->buffer < bytes) { \ + g->buffer = g->buffer_end; \ return 0; \ + } \ return bytestream2_get_ ## name ## u(g); \ } \ static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g) \ -- cgit v1.2.3