[FFmpeg-devel] [PATCH 1/9] avutil: add FF_RETURN_ON_OVERFLOW

[Andreas Cadhalpun]

Suggested-by: Rodger Combs <rodger.combs at gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---

Changed the name as suggested by wm4 and the return value as suggested
by Muhammad Faiz.
There are also two new overflow checks at the end of the series.

---
 libavutil/common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavutil/common.h b/libavutil/common.h
index 8142b31fdb..6d795a353a 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -99,6 +99,8 @@
 #define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
 #define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
 
+#define FF_RETURN_ON_OVERFLOW(ctx, x) if (x) {av_log(ctx, AV_LOG_ERROR, "Overflow check failed: " #x"\n"); return AVERROR(ERANGE);}
+
 /* misc math functions */
 
 #ifdef HAVE_AV_CONFIG_H
-- 
2.11.0