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Added a workaround for uncaught_exceptions for older Mac OS and iOS.

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libc++ disables std::uncaught_exceptions for Mac OS < 10.12 and
iOS < 10.0, even though it defines __cpp_lib_uncaught_exceptions.

Fixes https://github.com/boostorg/core/issues/80.
This commit is contained in:
Andrey Semashev
2020-07-20 23:13:42 +03:00
parent 484487f958
commit dcc04c5508
1 changed files with 18 additions and 3 deletions
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21
include/boost/core/uncaught_exceptions.hpp
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@ -1,5 +1,5 @@
/* /*
* Copyright Andrey Semashev 2018. * Copyright Andrey Semashev 2018 - 2020.
* Distributed under the Boost Software License, Version 1.0. * Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at * (See accompanying file LICENSE_1_0.txt or copy at
* https://www.boost.org/LICENSE_1_0.txt) * https://www.boost.org/LICENSE_1_0.txt)
@ -26,8 +26,23 @@
#pragma once #pragma once
#endif #endif
// Visual Studio 14 supports N4152 std::uncaught_exceptions() #if defined(__APPLE__)
#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) || \ #include <Availability.h>
// Apple systems only support std::uncaught_exceptions starting with specific versions:
// - Mac OS >= 10.12
// - iOS >= 10.0
// - tvOS >= 10.0
// - watchOS >= 3.0
// https://github.com/boostorg/core/issues/80
#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) && \
( \
(defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) || \
(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) \
)
#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
#endif
// Visual Studio 14.0 supports N4152 std::uncaught_exceptions() but doesn't define __cpp_lib_uncaught_exceptions
#elif (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) || \
(defined(_MSC_VER) && _MSC_VER >= 1900) (defined(_MSC_VER) && _MSC_VER >= 1900)
#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS #define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
#endif #endif