util: use *unsigned* ints for bit operations

Fixes errors thrown by GCC's Undefined Behaviour sanitizer (ubsan) every
time this macro is used.

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/util/bitset.h b/src/util/bitset.h
index adafc72..3b18aba 100644 (file)
--- a/src/util/bitset.h
+++ b/src/util/bitset.h
@@ -54,7 +54,7 @@
 #define BITSET_ONES(x) memset( (x), 0xff, sizeof (x) )
 
 #define BITSET_BITWORD(b) ((b) / BITSET_WORDBITS)
-#define BITSET_BIT(b) (1 << ((b) % BITSET_WORDBITS))
+#define BITSET_BIT(b) (1u << ((b) % BITSET_WORDBITS))
 
 /* single bit operations
  */