[FFmpeg-cvslog] avutil/internal: Do not enable CHECKED with DEBUG

[Michael Niedermayer]

ffmpeg | branch: release/3.3 | Michael Niedermayer <michael at niedermayer.cc> | Fri Apr  7 13:49:09 2017 +0200| [42163d4c551d1e1b1f18c0489aa8feb2cd9f8092] | committer: Michael Niedermayer

avutil/internal: Do not enable CHECKED with DEBUG

This avoids potential undefined behavior in debug mode while still allowing
developers which want to check for potential additional overflows to do so
by manually enabling this.

Reviewed-by: wm4
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a44b3abb4cf922e379fbac55452d0482a8223597)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=42163d4c551d1e1b1f18c0489aa8feb2cd9f8092
---

 libavutil/internal.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/libavutil/internal.h b/libavutil/internal.h
index 7780a9a791..a2d73e3cc6 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -30,9 +30,8 @@
 #    define NDEBUG
 #endif
 
-#if defined(DEBUG) && !defined(CHECKED)
-#    define CHECKED
-#endif
+// This can be enabled to allow detection of additional integer overflows with ubsan
+//#define CHECKED
 
 #include <limits.h>
 #include <stdint.h>