[ASan/Win] Add a test case for r216663 [-Zl vs LIBCMT vs asan_win_uar_thunk]

llvm-svn: 216665

compiler-rt/test/asan/TestCases/Windows/use_after_return_linkage.cc

@@ -0,0 +1,12 @@
+// Make sure LIBCMT doesn't accidentally get added to the list of DEFAULTLIB
+// directives.  REQUIRES: asan-dynamic-runtime
+// RUN: %clang_cl_asan -LD %s | FileCheck %s
+// CHECK: Creating library
+// CHECK-NOT: LIBCMT
+
+void foo(int *p) { *p = 42; }
+
+__declspec(dllexport) void bar() {
+  int x;
+  foo(&x);
+}