add unit tests
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@110278 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/BlocksRuntime/tests/copynull.c b/BlocksRuntime/tests/copynull.c
new file mode 100644
index 0000000..c49e499
--- /dev/null
+++ b/BlocksRuntime/tests/copynull.c
@@ -0,0 +1,37 @@
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+/*
+ * copynull.c
+ * testObjects
+ *
+ * Created by Blaine Garst on 10/15/08.
+ *
+ */
+
+#import <stdio.h>
+#import <Block.h>
+#import <Block_private.h>
+
+// CONFIG rdar://6295848
+
+int main(int argc, char *argv[]) {
+
+ void (^block)(void) = (void (^)(void))0;
+ void (^blockcopy)(void) = Block_copy(block);
+
+ if (blockcopy != (void (^)(void))0) {
+ printf("whoops, somehow we copied NULL!\n");
+ return 1;
+ }
+ // make sure we can also
+ Block_release(blockcopy);
+ // and more secretly
+ //_Block_destroy(blockcopy);
+
+ printf("%s: success\n", argv[0]);
+ return 0;
+}