1 files changed, 45 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/cfg4.C b/gcc/testsuite/g++.dg/opt/cfg4.C
new file mode 100644
index 000000000..94522ed41
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/cfg4.C
@@ -0,0 +1,45 @@
+// PR optimization/13067
+// Origin: <bryner@brianryner.com>
+
+// This used to fail on the tree-ssa because of "out-of-ssa"
+//  We might have a valid variable, but not a valid value when trying to find
+//  useless statements created by out-of-ssa translation. In this case
+//  val will be set to null, then later dereferenced.  Bad.
+
+// { dg-do compile }
+// { dg-options "-Os" }
+
+
+
+struct Iterator
+{
+  Iterator operator++();
+};
+
+void GetChar(char* aChar);
+
+void foo(char aChar)
+{
+  char quote;
+  Iterator end;
+
+  while (1) {
+    if (aChar == '"')
+      GetChar(&aChar);
+
+    switch (aChar) {
+    case 'a':
+      ++end;
+      if (quote) {
+	if (quote == aChar) {
+	  quote = 0;
+	}
+      } else {
+	quote = aChar;
+      }
+    }
+  }
+}
+
+
+