lib:util: Fix undefined behavior in idtree

lib/util/idtree.c:84 runtime error: left shift of 1 by 31 places cannot
be represented in type 'int'

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>

diff --git a/lib/util/idtree.c b/lib/util/idtree.c
index 72266a6a62c2d3b49c304af7dcdf7df8e7950342..d72ddfbc53809a8ed2b7bed085df75db99d9cc94 100644 (file)
--- a/lib/util/idtree.c
+++ b/lib/util/idtree.c
@@ -50,9 +50,9 @@
 #define MAX_LEVEL (MAX_ID_SHIFT + IDR_BITS - 1) / IDR_BITS
 #define IDR_FREE_MAX MAX_LEVEL + MAX_LEVEL
 
-#define set_bit(bit, v) (v) |= (1<<(bit))
-#define clear_bit(bit, v) (v) &= ~(1<<(bit))
-#define test_bit(bit, v) ((v) & (1<<(bit)))
+#define set_bit(bit, v) (v) |= (1U<<(bit))
+#define clear_bit(bit, v) (v) &= ~(1U<<(bit))
+#define test_bit(bit, v) ((v) & (1U<<(bit)))
 
 struct idr_layer {
        uint32_t                 bitmap;