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[libstdc++] Fix Wrong param type in :atomic_ref<_Tp*>::wait [PR100889]

Message ID 20210605004436.912869-1-rodgert@appliantology.com
State New
Headers show
Series [libstdc++] Fix Wrong param type in :atomic_ref<_Tp*>::wait [PR100889] | expand

Commit Message

Thomas Rodgers June 5, 2021, 12:44 a.m. UTC 
Fixes https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100889

libstdc++-v3/ChangeLog:

	* include/bits/atomic_base.h (atomic_ref<_Tp*>::wait):
	Change parameter type from _Tp to _Tp*.
	* testsuite/29_atomics/atomic_ref/100889.cc: New test.
---
 libstdc++-v3/include/bits/atomic_base.h       |  2 +-
 .../testsuite/29_atomics/atomic_ref/100889.cc | 29 +++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 libstdc++-v3/testsuite/29_atomics/atomic_ref/100889.cc
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Patch

diff --git a/libstdc++-v3/include/bits/atomic_base.h b/libstdc++-v3/include/bits/atomic_base.h
index 029b8ad65a9..20cf1343c58 100644
--- a/libstdc++-v3/include/bits/atomic_base.h
+++ b/libstdc++-v3/include/bits/atomic_base.h
@@ -1870,7 +1870,7 @@  _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 #if __cpp_lib_atomic_wait
       _GLIBCXX_ALWAYS_INLINE void
-      wait(_Tp __old, memory_order __m = memory_order_seq_cst) const noexcept
+      wait(_Tp* __old, memory_order __m = memory_order_seq_cst) const noexcept
       { __atomic_impl::wait(_M_ptr, __old, __m); }
 
       // TODO add const volatile overload
diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_ref/100889.cc b/libstdc++-v3/testsuite/29_atomics/atomic_ref/100889.cc
new file mode 100644
index 00000000000..1ea58cb6947
--- /dev/null
+++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/100889.cc
@@ -0,0 +1,29 @@ 
+// Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do compile { target c++2a } }
+
+#include <atomic>
+
+void
+test01()
+{
+  void* p;
+  std::atomic_ref a(p);
+  a.store(nullptr);
+}