Vendor import of compiler-rt trunk r306956:vendor/compiler-rt/compiler-rt-trunk-r306956

https://llvm.org/svn/llvm-project/compiler-rt/trunk@306956

1 files changed, 31 insertions, 0 deletions

diff --git a/test/asan/TestCases/Darwin/nil-return-struct.mm b/test/asan/TestCases/Darwin/nil-return-struct.mm
new file mode 100644
index 000000000000..9fb77e746339
--- /dev/null
+++ b/test/asan/TestCases/Darwin/nil-return-struct.mm
@@ -0,0 +1,31 @@
+// RUN: %clang_asan %s -o %t -framework Foundation
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#import <Foundation/Foundation.h>
+
+struct MyStruct {
+  long a, b, c, d;
+};
+
+@interface MyClass: NSObject
+- (MyStruct)methodWhichReturnsARect;
+@end
+@implementation MyClass
+- (MyStruct)methodWhichReturnsARect {
+  MyStruct s;
+  s.a = 10;
+  s.b = 20;
+  s.c = 30;
+  s.d = 40;
+  return s;
+}
+@end
+
+int main() {
+  MyClass *myNil = nil;  // intentionally nil
+  [myNil methodWhichReturnsARect];
+  fprintf(stderr, "Hello world");
+}
+
+// CHECK-NOT: AddressSanitizer: stack-use-after-scope
+// CHECK: Hello world