1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr21921.c b/gcc/testsuite/gcc.dg/pr21921.c
new file mode 100644
index 000000000..d6a8a2a94
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr21921.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -funsafe-math-optimizations" } */
+
+void
+Q (double *s, double h)
+{
+  int i;
+  if (h > 1)
+    h = h - 1;
+
+  for (i = 1; i < 3; i++)
+    if (s[i] / h > 0)
+      s[0] = h, s[i] = s[i] / h;
+}