1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr20100.c b/gcc/testsuite/gcc.dg/pr20100.c
new file mode 100644
index 000000000..988fbda64
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr20100.c
@@ -0,0 +1,32 @@
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+int func_pure (void) __attribute__ ((pure));
+void func_other (int);
+int global_int;
+void abort ();
+void func_other(int a)
+{
+  if (a != global_int)
+   abort ();
+  global_int++;
+}
+
+int func_pure(void)
+{
+  return global_int;
+}
+
+int
+func_loop (int arg)
+{
+ // global_int ++;
+  while (arg--)
+      func_other (func_pure ());
+}
+
+int main(void)
+{
+  func_loop(10);
+  return 0;
+}