--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compiler-rt/test/tsan/dlclose.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,56 @@
+// RUN: %clangxx_tsan -O1 %s -DBUILD_SO -fPIC -shared -o %t-so.so
+// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t && %run %t 2>&1 | FileCheck %s
+
+// Test case for
+// https://github.com/google/sanitizers/issues/487
+
+#ifdef BUILD_SO
+
+#include <stdio.h>
+
+extern "C"
+void sofunc() {
+  fprintf(stderr, "HELLO FROM SO\n");
+}
+
+#else  // BUILD_SO
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string>
+
+void *lib;
+void *lib2;
+
+struct Closer {
+  ~Closer() {
+    dlclose(lib);
+    fprintf(stderr, "CLOSED SO\n");
+  }
+};
+static Closer c;
+
+int main(int argc, char *argv[]) {
+  lib = dlopen((std::string(argv[0]) + std::string("-so.so")).c_str(),
+      RTLD_NOW|RTLD_NODELETE);
+  if (lib == 0) {
+    printf("error in dlopen: %s\n", dlerror());
+    return 1;
+  }
+  void *f = dlsym(lib, "sofunc");
+  if (f == 0) {
+    printf("error in dlsym: %s\n", dlerror());
+    return 1;
+  }
+  ((void(*)())f)();
+  return 0;
+}
+
+#endif  // BUILD_SO
+
+// CHECK: HELLO FROM SO
+// CHECK-NOT: Inconsistency detected by ld.so
+// CHECK: CLOSED SO
+