1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/cfg2.C b/gcc/testsuite/g++.dg/opt/cfg2.C
new file mode 100644
index 00000000000..229f4bc3a52
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/cfg2.C
@@ -0,0 +1,38 @@
+// PR optimization/12215
+// Origin: <nick@ilm.com>
+// Reduced testcase by Wolfgang Bangerth <bangerth@ticam.utexas.edu>
+
+// This used to fail because the CSE pass destroyed the CFG in presence
+// of trapping loads, which led to the deletion of basic blocks.
+
+// { dg-do compile }
+// { dg-options "-O2 -fno-gcse -fnon-call-exceptions" }
+
+
+struct B {
+  ~B() throw() {}
+};
+
+struct X {
+  X(const char*, const B&);
+  ~X() {}
+};
+
+bool m();
+void f(int &i, float &arg0);
+
+void g (const char **argv) {
+  float val;
+  int i = 1;
+
+  try {
+    while ( i < 1 )
+      {
+        X arg(argv[i], B());
+        if (m())
+          throw(0);
+
+        f(i, val);
+      }
+  } catch (...) {}
+}