Fix undefined behavior of left shift for CAVLC encoding

1c317477 · Anton Mitrofanov · Henrik Gramner · a0253ebe · 1c317477
Commit 1c317477 authored Jul 18, 2018 by Anton Mitrofanov Committed by Henrik Gramner Jul 21, 2018
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common/vlc.c common/vlc.c +3 -1

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--- a/common/vlc.c
+++ b/common/vlc.c
@@ -71,7 +71,9 @@ void x264_cavlc_init( x264_t *h )
            vlc->i_next = i_next;
        }

-    for( int i = 1; i < (1<<16); i++ )
+    x264_run_before[0] = 0;
+    x264_run_before[1] = 0;
+    for( uint32_t i = 2; i < (1<<16); i++ )
    {
        x264_run_level_t runlevel;
        ALIGNED_ARRAY_16( dctcoef, dct, [16] );