1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/pr19768.C b/gcc/testsuite/g++.dg/opt/pr19768.C
new file mode 100644
index 000000000..376ca9938
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/pr19768.C
@@ -0,0 +1,29 @@
+//  PR tree-opt/19768
+// tree DSE was removing one store to LL.currentLevel
+//  but forgot that since the vop was in an abnormal PHI
+//  that we have to update the SSA_NAME which we propagate
+//  into the abnormal PHI
+
+// { dg-do compile }
+// { dg-options "-O" }
+
+struct LeveLogger
+{
+  int currentLevel;
+};
+extern LeveLogger LL;
+struct gg
+{
+  ~gg ( void )
+    { LL.currentLevel = 1; }
+};
+void f(void);
+void g ( void )
+{
+  gg sll;
+  {
+    gg sll;
+    f();
+  }
+  f();
+}