1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr43562.c b/gcc/testsuite/gcc.dg/pr43562.c
new file mode 100644
index 00000000000..352c107a935
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr43562.c
@@ -0,0 +1,20 @@
+/* { dg-options "-O0" } */
+/* { dg-do compile } */
+
+extern unsigned foo (void);
+extern void bar (void);
+
+__attribute__ ((optimize ("O2")))
+void bak ()
+{
+  unsigned a;
+  while (1)
+    {
+      a = foo ();
+      while (a)
+	{
+	  a &= 1;
+	  bar ();
+	}
+    }
+}