--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr46728-6.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -ffast-math -lm -fno-ident" } */
+
+#include <math.h>
+
+int
+main (int argc, char *argv[])
+{
+  volatile double result;
+
+  result = pow (-0.0, 3.0);
+  result = pow (26.47, -2.0);
+  result = pow (0.0, 0.0);
+  result = pow (22.3, 1.0);
+  result = pow (33.2, -1.0);
+
+  return 0;
+}
+
+
+/* { dg-final { scan-assembler-not {pow\M} } } */