Merge pull request #408 from arvid-norlander/bugfix/fix-build-on-clang-19

Fix build on clang-19

.github/workflows/ci.yml

@@ -28,16 +28,19 @@ jobs:
             os: ubuntu-latest
             install: g++-5
           - toolset: gcc-7
-            os: ubuntu-20.04
-            install: g++-7
+            container: ubuntu:18.04
+            os: ubuntu-latest
           - toolset: gcc-9
-            os: ubuntu-20.04
+            container: ubuntu:20.04
+            os: ubuntu-latest
           - toolset: gcc-11
             os: ubuntu-22.04
           - toolset: gcc-13
             os: ubuntu-24.04
           - toolset: clang
-            os: ubuntu-20.04
+            container: ubuntu:20.04
+            os: ubuntu-latest
+            install: clang
           - toolset: clang
             os: ubuntu-22.04
           - toolset: clang

include/boost/thread/future.hpp

@@ -4668,7 +4668,7 @@ namespace detail
       }
       run_it& operator=(BOOST_THREAD_RV_REF(run_it) x) BOOST_NOEXCEPT {
         if (this != &x) {
-          that_=x.that;
+          that_=x.that_;
           x.that_.reset();
         }
         return *this;