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Disable use of std::launder under msvc-14.1. Fixes #160.

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Peter Dimov 2024-01-04 04:07:34 +02:00
parent 8af04d101c
commit e4adc769aa
1 changed files with 17 additions and 3 deletions
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20
include/boost/core/launder.hpp
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@ -11,14 +11,28 @@
// Distributed under the Boost Software License, Version 1.0. // Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt // https://www.boost.org/LICENSE_1_0.txt
#include <boost/config.hpp>
#if defined(__has_builtin) #if defined(__has_builtin)
# if __has_builtin(__builtin_launder) # if __has_builtin(__builtin_launder)
# define BOOST_CORE_HAS_BUILTIN_LAUNDER # define BOOST_CORE_HAS_BUILTIN_LAUNDER
# endif # endif
#endif #endif
#if (__cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)) && !defined(BOOST_CORE_HAS_BUILTIN_LAUNDER) #if defined(BOOST_MSVC) && BOOST_MSVC < 1920
# include <new>
// msvc-14.1 suffers from internal compiler errors when using std::launder
// https://github.com/boostorg/core/issues/160
// https://github.com/boostorg/optional/issues/122
#elif (BOOST_CXX_VERSION >= 201703L) && !defined(BOOST_CORE_HAS_BUILTIN_LAUNDER)
#include <new>
#if defined(__cpp_lib_launder)
# define BOOST_CORE_HAS_STD_LAUNDER
#endif
#endif #endif
namespace boost namespace boost
@ -33,7 +47,7 @@ template<class T> T* launder( T* p )
return __builtin_launder( p ); return __builtin_launder( p );
} }
#elif (__cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)) && defined(__cpp_lib_launder) #elif defined(BOOST_CORE_HAS_STD_LAUNDER)
template<class T> T* launder( T* p ) template<class T> T* launder( T* p )
{ {