e120521893
Some of these are due to no longer using #pragma GCC system_header in libstdc++ headers, some have been failing for longer and weren't noticed. libstdc++-v3/ChangeLog: * include/parallel/algobase.h (search): Use sequential algorithm for constant evaluation. * include/parallel/algorithmfwd.h (search): Add _GLIBCXX20_CONSTEXPR. * include/parallel/multiway_merge.h: Remove stray semi-colon. * include/parallel/multiseq_selection.h: Add diagnostic pragmas for -Wlong-long warning. * include/parallel/quicksort.h: Likewise. * include/parallel/random_number.h: Likewise. * include/parallel/settings.h: Likewise. * include/parallel/workstealing.h: Replace ++ and -- on volatile variables. * testsuite/17_intro/names.cc: Skip names defined by <tr1/random>. * testsuite/20_util/pair/dangling_ref.cc: Skip test if Parallel Mode is enabled. * testsuite/20_util/tuple/dangling_ref.cc: Likewise.
67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
// { dg-do compile { target c++11 } }
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// { dg-options "-Wno-unused-variable" }
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// { dg-additional-options "-D_GLIBCXX_DEBUG" { target c++17_down } }
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// { dg-skip-if "cannot mix with DEBUG" { *-*-* } { "-D_GLIBCXX_PARALLEL" } }
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#include <utility>
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#if __cplusplus >= 202002L
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// For C++20 and later, constructors are constrained to disallow dangling.
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static_assert(!std::is_constructible_v<std::pair<const int&, int>, long, int>);
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static_assert(!std::is_constructible_v<std::pair<int, const int&>, int, long>);
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static_assert(!std::is_constructible_v<std::pair<const int&, int>,
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std::pair<long, long>>);
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static_assert(!std::is_constructible_v<std::pair<int, const int&>,
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std::pair<long, long>>);
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static_assert(!std::is_constructible_v<std::pair<const int&, int>,
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const std::pair<long, long>&>);
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static_assert(!std::is_constructible_v<std::pair<int, const int&>,
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const std::pair<long, long>&>);
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#endif
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void
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test_binary_ctors()
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{
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std::pair<const int&, int> p1(1L, 2);
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// { dg-error "here" "" { target { c++17_down && hosted } } 24 }
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// { dg-error "use of deleted function" "" { target c++20 } 24 }
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std::pair<int, const int&> p2(1, 2L);
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// { dg-error "here" "" { target { c++17_down && hosted } } 28 }
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// { dg-error "use of deleted function" "" { target c++20 } 28 }
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std::pair<const int&, const int&> p3(1L, 2L);
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// { dg-error "here" "" { target { c++17_down && hosted } } 32 }
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// { dg-error "use of deleted function" "" { target c++20 } 32 }
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}
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void
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test_converting_ctors()
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{
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std::pair<long, long> p0;
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std::pair<const int&, int> p1(p0);
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// { dg-error "here" "" { target { c++17_down && hosted } } 42 }
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// { dg-error "use of deleted function" "" { target c++20 } 42 }
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std::pair<int, const int&> p2(p0);
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// { dg-error "here" "" { target { c++17_down && hosted } } 46 }
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// { dg-error "use of deleted function" "" { target c++20 } 46 }
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std::pair<const int&, const int&> p3(p0);
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// { dg-error "here" "" { target { c++17_down && hosted } } 50 }
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// { dg-error "use of deleted function" "" { target c++20 } 50 }
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std::pair<const int&, int> p4(std::move(p0));
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// { dg-error "here" "" { target { c++17_down && hosted } } 54 }
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// { dg-error "use of deleted function" "" { target c++20 } 54 }
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std::pair<int, const int&> p5(std::move(p0));
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// { dg-error "here" "" { target { c++17_down && hosted } } 58 }
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// { dg-error "use of deleted function" "" { target c++20 } 58 }
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std::pair<const int&, const int&> p6(std::move(p0));
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// { dg-error "here" "" { target { c++17_down && hosted } } 62 }
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// { dg-error "use of deleted function" "" { target c++20 } 62 }
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}
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// { dg-error "static assert.* dangling reference" "" { target { c++17_down && hosted } } 0 }
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