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[FFmpeg-devel,3/3] avcodec/get_bits: add assertion to limit ouptut value of get_bits

Message ID 20190217194453.8030-3-cus@passwd.hu
State Accepted
Commit 694d9d53685333771823285457bdd1ef1480eafc
Headers show

Commit Message

Marton Balint Feb. 17, 2019, 7:44 p.m. UTC 
Should fix the following Coverity false positives:

Coverity CID #1415651.
Coverity CID #1420392.
Coverity CID #1420473.
Coverity CID #1433770.
Coverity CID #1435320.
Coverity CID #1439573.
Coverity CID #1439580.
Coverity CID #1439588.

Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavcodec/get_bits.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h
index 2e2adc29c2..c2f267186e 100644
--- a/libavcodec/get_bits.h
+++ b/libavcodec/get_bits.h
@@ -403,6 +403,7 @@  static inline unsigned int get_bits(GetBitContext *s, int n)
     LAST_SKIP_BITS(re, s, n);
     CLOSE_READER(re, s);
 #endif
+    av_assert2(tmp < UINT64_C(1) << n);
     return tmp;
 }