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Omit do {} while (false) for MSVC versions prior to 2015

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Reason: See the new code comment.
This commit is contained in:
Gennaro Prota
2025-10-13 17:36:12 +02:00
parent 8a352e253a
commit 40fda50ae1
1 changed files with 19 additions and 6 deletions
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25
include/boost/core/lightweight_test.hpp
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@@ -551,9 +551,22 @@ inline void lwt_init()
#define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) ( ::boost::detail::test_all_eq_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2) ) #define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) ( ::boost::detail::test_all_eq_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2) )
#define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) ( ::boost::detail::test_all_with_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2, predicate) ) #define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) ( ::boost::detail::test_all_with_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2, predicate) )
#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1900)
// The usual idiom for multiline macros. But disabled for MSVC versions
// prior to 2015, which would emit a "conditional expression is constant"
// warning that we could not silence with a _Pragma, despite this being
// the same thing described here:
//
// <https://learn.microsoft.com/en-us/cpp/preprocessor/pragma-directives-and-the-pragma-keyword?view=msvc-140>.
//
#define BOOST_LWT_DETAIL_DO_WHILE_FALSE( x ) do { x } while (false)
#else
#define BOOST_LWT_DETAIL_DO_WHILE_FALSE( x ) x
#endif
#ifndef BOOST_NO_EXCEPTIONS #ifndef BOOST_NO_EXCEPTIONS
#define BOOST_TEST_THROWS( EXPR, EXCEP ) \ #define BOOST_TEST_THROWS( EXPR, EXCEP ) \
do { \ BOOST_LWT_DETAIL_DO_WHILE_FALSE( \
try { \ try { \
EXPR; \ EXPR; \
::boost::detail::throw_failed_impl \ ::boost::detail::throw_failed_impl \
@@ -566,15 +579,15 @@ inline void lwt_init()
::boost::detail::throw_failed_impl \ ::boost::detail::throw_failed_impl \
(#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \ (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
} \ } \
} while (false) )
// //
#else #else
#define BOOST_TEST_THROWS( EXPR, EXCEP ) do {} while (false) #define BOOST_TEST_THROWS( EXPR, EXCEP ) BOOST_LWT_DETAIL_DO_WHILE_FALSE((void)0;)
#endif #endif
#ifndef BOOST_NO_EXCEPTIONS #ifndef BOOST_NO_EXCEPTIONS
# define BOOST_TEST_NO_THROW(EXPR) \ # define BOOST_TEST_NO_THROW(EXPR) \
do { \ BOOST_LWT_DETAIL_DO_WHILE_FALSE( \
try { \ try { \
EXPR; \ EXPR; \
} catch (const std::exception& e) { \ } catch (const std::exception& e) { \
@@ -584,10 +597,10 @@ inline void lwt_init()
::boost::detail::no_throw_failed_impl \ ::boost::detail::no_throw_failed_impl \
(#EXPR, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \ (#EXPR, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
} \ } \
} while (false) )
// //
#else #else
# define BOOST_TEST_NO_THROW(EXPR) do { EXPR; } while (false) # define BOOST_TEST_NO_THROW(EXPR) BOOST_LWT_DETAIL_DO_WHILE_FALSE(EXPR;)
#endif #endif
#endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP #endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP