Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/msan/pthread_getname_np.cc

@@ -0,0 +1,34 @@
+// RUN: %clangxx_msan -std=c++11 -O0 %s -o %t && %run %t
+// UNSUPPORTED: android, netbsd
+
+// Regression test for a deadlock in pthread_getattr_np
+
+#include <assert.h>
+#include <pthread.h>
+#include <string.h>
+#include <sanitizer/msan_interface.h>
+
+#include <stdio.h>
+
+void *ThreadFn(void *) {
+  return nullptr;
+}
+
+int main(void) {
+  pthread_t t;
+  int res = pthread_create(&t, 0, ThreadFn, 0);
+  assert(!res);
+
+  const char *kMyThreadName = "my-thread-name";
+  res = pthread_setname_np(t, kMyThreadName);
+  assert(!res);
+
+  char buf[100];
+  res = pthread_getname_np(t, buf, sizeof(buf));
+  assert(!res);
+  assert(strcmp(buf, kMyThreadName) == 0);
+
+  res = pthread_join(t, 0);
+  assert(!res);
+  return 0;
+}