Debug MSVC failure; cat xatomic.h

Author: YannickJadoul

.github/workflows/ci.yml

@@ -598,6 +598,8 @@ jobs:
       with:
         python-version: ${{ matrix.python }}
 
+    - run: cat "c:\program files (x86)\microsoft visual studio 14.0\vc\include\xatomic.h"
+
     - name: Update CMake
       uses: jwlawson/[email protected]
 

tests/test_iostream.cpp

@@ -44,7 +44,7 @@ struct TestThread {
         delete t_;
     }
 
-    void stop() { stop_ = 1; }
+    void stop() { stop_ = true; }
 
     void join() {
         py::gil_scoped_release gil_lock;