Import compiler-rt release_34 branch r197381.vendor/compiler-rt/compiler-rt-r197381

https://llvm.org/svn/llvm-project/compiler-rt/branches/release_34@197381

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/tsan/lit_tests/ignore_lib1.cc b/lib/tsan/lit_tests/ignore_lib1.cc
new file mode 100644
index 000000000000..c4f2e7344135
--- /dev/null
+++ b/lib/tsan/lit_tests/ignore_lib1.cc
@@ -0,0 +1,42 @@
+// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %T/libignore_lib1.so
+// RUN: %clangxx_tsan -O1 %s -o %t
+// RUN: echo running w/o suppressions:
+// RUN: not %t 2>&1 | FileCheck %s --check-prefix=CHECK-NOSUPP
+// RUN: echo running with suppressions:
+// RUN: TSAN_OPTIONS="$TSAN_OPTIONS suppressions=%s.supp" %t 2>&1 | FileCheck %s --check-prefix=CHECK-WITHSUPP
+
+// Tests that interceptors coming from a dynamically loaded library specified
+// in called_from_lib suppression are ignored.
+
+#ifndef LIB
+
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <libgen.h>
+#include <string>
+
+int main(int argc, char **argv) {
+  std::string lib = std::string(dirname(argv[0])) + "/libignore_lib1.so";
+  void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
+  if (h == 0)
+    exit(printf("failed to load the library (%d)\n", errno));
+  void (*f)() = (void(*)())dlsym(h, "libfunc");
+  if (f == 0)
+    exit(printf("failed to find the func (%d)\n", errno));
+  f();
+}
+
+#else  // #ifdef LIB
+
+#include "ignore_lib_lib.h"
+
+#endif  // #ifdef LIB
+
+// CHECK-NOSUPP: WARNING: ThreadSanitizer: data race
+// CHECK-NOSUPP: OK
+
+// CHECK-WITHSUPP-NOT: WARNING: ThreadSanitizer: data race
+// CHECK-WITHSUPP: OK
+