COMMON: Fix UB, left shift of negative value

scummvm · Mar 22, 2018 · d623ec2 · d623ec2
1 parent 001f243
commit d623ec2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/common/dcl.cpp b/common/dcl.cpp
@@ -98,7 +98,7 @@ uint32 DecompressorDCL::getBitsLSB(int n) {
 	// Fetching more data to buffer if needed
 	if (_nBits < n)
 		fetchBitsLSB();
-	uint32 ret = (_dwBits & ~((~0) << n));
+	uint32 ret = (_dwBits & ~(~0UL << n));
 	_dwBits >>= n;
 	_nBits -= n;
 	return ret;