[libcxx-commits] [libcxx] [libc++] Add move constructor & assignment to `exception_ptr` (PR #164281)

[Nikolas Klauser via libcxx-commits]

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@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions std-at-least-c++11
+
+// <exception>
+
+// typedef unspecified exception_ptr;
+
+// Test the move assignment of exception_ptr
+
+#include <exception>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::exception_ptr p = std::make_exception_ptr(42);
+  std::exception_ptr p2{p};
+  assert(p2 == p);
+  // Under test: the move assignment
+  std::exception_ptr p3;
+  p3 = std::move(p2);
+  assert(p3 == p);
+// `p2` was moved from. In libc++ it will be nullptr, but
+// this is not guaranteed by the standard.
+#if defined(_LIBCPP_VERSION) && !defined(_LIBCPP_ABI_MICROSOFT)
+  assert(p2 == nullptr);
+  assert(p2 == nullptr);
+#endif
+
+  try {
+    std::rethrow_exception(p3);
+  } catch (int e) {
+    assert(e == 42);
+  }
+
+  return 0;
+}
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philnik777 wrote:

Please add newlines.

https://github.com/llvm/llvm-project/pull/164281