(REGSET_ELT_TYPE): Make unsigned to avoid signed arithmetic overflow.

From-SVN: r4900

diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index fb0d10eed13cc68339b2c3adff6bb011c0486047..b1bc002000fb2bee6b25c85d13496559ec900477 100644 (file)
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -26,7 +26,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
    that the initial part of a regset that contains information on the
    hard registers is the same format as a HARD_REG_SET.  */
 
-#define REGSET_ELT_TYPE HOST_WIDE_INT
+#define REGSET_ELT_TYPE unsigned HOST_WIDE_INT
 
 /* Define the type for a pointer to a set with a bit for each
    (hard or pseudo) register.  */