Return -1 from CurrentThreadId when called by thread outside the pool.

1 files changed, 1 insertions, 1 deletions

diff --git a/unsupported/test/cxx11_non_blocking_thread_pool.cpp b/unsupported/test/cxx11_non_blocking_thread_pool.cpp
index 6e4e5cbab..5f9bb938b 100644
--- a/unsupported/test/cxx11_non_blocking_thread_pool.cpp
+++ b/unsupported/test/cxx11_non_blocking_thread_pool.cpp
@@ -28,7 +28,7 @@ static void test_parallelism()
   const int kThreads = 16;  // code below expects that this is a multiple of 4
   NonBlockingThreadPool tp(kThreads);
   VERIFY_IS_EQUAL(tp.NumThreads(), kThreads);
-  VERIFY_IS_EQUAL(tp.CurrentThreadId(), kThreads);
+  VERIFY_IS_EQUAL(tp.CurrentThreadId(), -1);
   for (int iter = 0; iter < 100; ++iter) {
     std::atomic<int> running(0);
     std::atomic<int> done(0);