Initialize the cleanup.dst variable if necessary. Fixes PR3789.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67075 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 0 deletions

diff --git a/test/CodeGen/cleanup-stack.c b/test/CodeGen/cleanup-stack.c
new file mode 100644
index 0000000000..360f6e701b
--- /dev/null
+++ b/test/CodeGen/cleanup-stack.c
@@ -0,0 +1,15 @@
+// RUN: clang -emit-llvm %s -o %t &&
+// RUN: grep "store i32 0, i32* %cleanup" %t | count 2
+void f(int n) {
+  int a[n];
+  
+  {
+    int b[n];
+    
+    if (n)
+      return;
+  }
+  
+  if (n)
+    return;
+}