fixes bug in sum_sqr_shift where overflow could happen for the last sample of an odd-length frame

1 files changed, 2 insertions, 1 deletions

diff --git a/silk/sum_sqr_shift.c b/silk/sum_sqr_shift.c
index f5bb6c8b..e387391a 100644
--- a/silk/sum_sqr_shift.c
+++ b/silk/sum_sqr_shift.c
@@ -73,10 +73,11 @@ void silk_sum_sqr_shift(
     }
 
     /* Make sure to have at least 10% headroom */
-    if( nrg > SILK_FIX_CONST( 0.9, 31 ) ) {
+    if( (opus_uint32)nrg > SILK_FIX_CONST( 0.9, 31 ) ) {
         nrg = silk_RSHIFT_uint( (opus_uint32)nrg, 1 );
         shft++;
     }
+	silk_assert( nrg >= 0 );
 
     /* Output arguments */
     *shift  = shft;