If variable location is invalid then use current location.
This fixes radar 7959934.

llvm-svn: 103408
diff --git a/clang/test/CodeGenObjC/blocks-ivar-debug.m b/clang/test/CodeGenObjC/blocks-ivar-debug.m
new file mode 100644
index 0000000..92a5a72
--- /dev/null
+++ b/clang/test/CodeGenObjC/blocks-ivar-debug.m
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -g %s -fblocks -S -o /dev/null
+// Radar 7959934
+
+@interface NSObject {
+  struct objc_object *isa;
+}
+@end
+@interface Foo : NSObject {
+  int _prop;
+}
+@end
+
+@implementation Foo
+- (int)doSomething {
+  int (^blk)(void) = ^{ return _prop; };
+  return blk();
+}
+
+@end
+