loop-3.c: Fix undefined behavior.

2019-10-04  Richard Biener  <rguenther@suse.de>

	* gcc.c-torture/execute/loop-3.c: Fix undefined behavior.

From-SVN: r276572

gcc/testsuite/ChangeLog

+2019-10-04  Richard Biener  <rguenther@suse.de>
+
+	* gcc.c-torture/execute/loop-3.c: Fix undefined behavior.
+
 2019-10-04  Yuliang Wang  <yuliang.wang@arm.com>
 
 	* gcc.target/aarch64/sve2/shracc_1.c: Tighten scan-assembler-nots

gcc/testsuite/gcc.c-torture/execute/loop-3.c

@@ -13,7 +13,7 @@ f (m)
   i = m;
   do
     {
-      g (i * INT_MAX / 2);
+      g ((int)((unsigned)i * INT_MAX) / 2);
     }
   while (--i > 0);
 }