Index: third_party/protobuf/m4/ax_cxx_compile_stdcxx.m4 |
diff --git a/third_party/protobuf/m4/ax_cxx_compile_stdcxx.m4 b/third_party/protobuf/m4/ax_cxx_compile_stdcxx.m4 |
deleted file mode 100644 |
index b61fcb6314a3b569c94de08f64cd705447defdde..0000000000000000000000000000000000000000 |
--- a/third_party/protobuf/m4/ax_cxx_compile_stdcxx.m4 |
+++ /dev/null |
@@ -1,982 +0,0 @@ |
-# =========================================================================== |
-# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html |
-# =========================================================================== |
-# |
-# SYNOPSIS |
-# |
-# AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional]) |
-# |
-# DESCRIPTION |
-# |
-# Check for baseline language coverage in the compiler for the specified |
-# version of the C++ standard. If necessary, add switches to CXX and |
-# CXXCPP to enable support. VERSION may be '11' (for the C++11 standard) |
-# or '14' (for the C++14 standard). |
-# |
-# The second argument, if specified, indicates whether you insist on an |
-# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g. |
-# -std=c++11). If neither is specified, you get whatever works, with |
-# preference for an extended mode. |
-# |
-# The third argument, if specified 'mandatory' or if left unspecified, |
-# indicates that baseline support for the specified C++ standard is |
-# required and that the macro should error out if no mode with that |
-# support is found. If specified 'optional', then configuration proceeds |
-# regardless, after defining HAVE_CXX${VERSION} if and only if a |
-# supporting mode is found. |
-# |
-# LICENSE |
-# |
-# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> |
-# Copyright (c) 2012 Zack Weinberg <zackw@panix.com> |
-# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu> |
-# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com> |
-# Copyright (c) 2015 Paul Norman <penorman@mac.com> |
-# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu> |
-# Copyright (c) 2016 Krzesimir Nowak <qdlacz@gmail.com> |
-# |
-# Copying and distribution of this file, with or without modification, are |
-# permitted in any medium without royalty provided the copyright notice |
-# and this notice are preserved. This file is offered as-is, without any |
-# warranty. |
- |
-#serial 6 |
- |
-dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro |
-dnl (serial version number 13). |
- |
-AX_REQUIRE_DEFINED([AC_MSG_WARN]) |
-AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl |
- m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"], |
- [$1], [14], [ax_cxx_compile_alternatives="14 1y"], |
- [$1], [17], [ax_cxx_compile_alternatives="17 1z"], |
- [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl |
- m4_if([$2], [], [], |
- [$2], [ext], [], |
- [$2], [noext], [], |
- [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl |
- m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true], |
- [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true], |
- [$3], [optional], [ax_cxx_compile_cxx$1_required=false], |
- [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])]) |
- AC_LANG_PUSH([C++])dnl |
- ac_success=no |
- AC_CACHE_CHECK(whether $CXX supports C++$1 features by default, |
- ax_cv_cxx_compile_cxx$1, |
- [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], |
- [ax_cv_cxx_compile_cxx$1=yes], |
- [ax_cv_cxx_compile_cxx$1=no])]) |
- if test x$ax_cv_cxx_compile_cxx$1 = xyes; then |
- ac_success=yes |
- fi |
- |
- m4_if([$2], [noext], [], [dnl |
- if test x$ac_success = xno; then |
- for alternative in ${ax_cxx_compile_alternatives}; do |
- switch="-std=gnu++${alternative}" |
- cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch]) |
- AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch, |
- $cachevar, |
- [ac_save_CXX="$CXX" |
- CXX="$CXX $switch" |
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], |
- [eval $cachevar=yes], |
- [eval $cachevar=no]) |
- CXX="$ac_save_CXX"]) |
- if eval test x\$$cachevar = xyes; then |
- CXX="$CXX $switch" |
- if test -n "$CXXCPP" ; then |
- CXXCPP="$CXXCPP $switch" |
- fi |
- ac_success=yes |
- break |
- fi |
- done |
- fi]) |
- |
- m4_if([$2], [ext], [], [dnl |
- if test x$ac_success = xno; then |
- dnl HP's aCC needs +std=c++11 according to: |
- dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf |
- dnl Cray's crayCC needs "-h std=c++11" |
- for alternative in ${ax_cxx_compile_alternatives}; do |
- for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do |
- cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch]) |
- AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch, |
- $cachevar, |
- [ac_save_CXX="$CXX" |
- CXX="$CXX $switch" |
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], |
- [eval $cachevar=yes], |
- [eval $cachevar=no]) |
- CXX="$ac_save_CXX"]) |
- if eval test x\$$cachevar = xyes; then |
- CXX="$CXX $switch" |
- if test -n "$CXXCPP" ; then |
- CXXCPP="$CXXCPP $switch" |
- fi |
- ac_success=yes |
- break |
- fi |
- done |
- if test x$ac_success = xyes; then |
- break |
- fi |
- done |
- fi]) |
- AC_LANG_POP([C++]) |
- if test x$ax_cxx_compile_cxx$1_required = xtrue; then |
- if test x$ac_success = xno; then |
- AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.]) |
- fi |
- fi |
- if test x$ac_success = xno; then |
- HAVE_CXX$1=0 |
- AC_MSG_NOTICE([No compiler with C++$1 support was found]) |
- else |
- HAVE_CXX$1=1 |
- AC_DEFINE(HAVE_CXX$1,1, |
- [define if the compiler supports basic C++$1 syntax]) |
- fi |
- AC_SUBST(HAVE_CXX$1) |
- m4_if([$1], [17], [AC_MSG_WARN([C++17 is not yet standardized, so the checks may change in incompatible ways anytime])]) |
-]) |
- |
- |
-dnl Test body for checking C++11 support |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11], |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 |
-) |
- |
- |
-dnl Test body for checking C++14 support |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14], |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_14 |
-) |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17], |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_14 |
- _AX_CXX_COMPILE_STDCXX_testbody_new_in_17 |
-) |
- |
-dnl Tests for new features in C++11 |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[ |
- |
-// If the compiler admits that it is not ready for C++11, why torture it? |
-// Hopefully, this will speed up the test. |
- |
-#ifndef __cplusplus |
- |
-#error "This is not a C++ compiler" |
- |
-#elif __cplusplus < 201103L |
- |
-#error "This is not a C++11 compiler" |
- |
-#else |
- |
-namespace cxx11 |
-{ |
- |
- namespace test_static_assert |
- { |
- |
- template <typename T> |
- struct check |
- { |
- static_assert(sizeof(int) <= sizeof(T), "not big enough"); |
- }; |
- |
- } |
- |
- namespace test_final_override |
- { |
- |
- struct Base |
- { |
- virtual void f() {} |
- }; |
- |
- struct Derived : public Base |
- { |
- virtual void f() override {} |
- }; |
- |
- } |
- |
- namespace test_double_right_angle_brackets |
- { |
- |
- template < typename T > |
- struct check {}; |
- |
- typedef check<void> single_type; |
- typedef check<check<void>> double_type; |
- typedef check<check<check<void>>> triple_type; |
- typedef check<check<check<check<void>>>> quadruple_type; |
- |
- } |
- |
- namespace test_decltype |
- { |
- |
- int |
- f() |
- { |
- int a = 1; |
- decltype(a) b = 2; |
- return a + b; |
- } |
- |
- } |
- |
- namespace test_type_deduction |
- { |
- |
- template < typename T1, typename T2 > |
- struct is_same |
- { |
- static const bool value = false; |
- }; |
- |
- template < typename T > |
- struct is_same<T, T> |
- { |
- static const bool value = true; |
- }; |
- |
- template < typename T1, typename T2 > |
- auto |
- add(T1 a1, T2 a2) -> decltype(a1 + a2) |
- { |
- return a1 + a2; |
- } |
- |
- int |
- test(const int c, volatile int v) |
- { |
- static_assert(is_same<int, decltype(0)>::value == true, ""); |
- static_assert(is_same<int, decltype(c)>::value == false, ""); |
- static_assert(is_same<int, decltype(v)>::value == false, ""); |
- auto ac = c; |
- auto av = v; |
- auto sumi = ac + av + 'x'; |
- auto sumf = ac + av + 1.0; |
- static_assert(is_same<int, decltype(ac)>::value == true, ""); |
- static_assert(is_same<int, decltype(av)>::value == true, ""); |
- static_assert(is_same<int, decltype(sumi)>::value == true, ""); |
- static_assert(is_same<int, decltype(sumf)>::value == false, ""); |
- static_assert(is_same<int, decltype(add(c, v))>::value == true, ""); |
- return (sumf > 0.0) ? sumi : add(c, v); |
- } |
- |
- } |
- |
- namespace test_noexcept |
- { |
- |
- int f() { return 0; } |
- int g() noexcept { return 0; } |
- |
- static_assert(noexcept(f()) == false, ""); |
- static_assert(noexcept(g()) == true, ""); |
- |
- } |
- |
- namespace test_constexpr |
- { |
- |
- template < typename CharT > |
- unsigned long constexpr |
- strlen_c_r(const CharT *const s, const unsigned long acc) noexcept |
- { |
- return *s ? strlen_c_r(s + 1, acc + 1) : acc; |
- } |
- |
- template < typename CharT > |
- unsigned long constexpr |
- strlen_c(const CharT *const s) noexcept |
- { |
- return strlen_c_r(s, 0UL); |
- } |
- |
- static_assert(strlen_c("") == 0UL, ""); |
- static_assert(strlen_c("1") == 1UL, ""); |
- static_assert(strlen_c("example") == 7UL, ""); |
- static_assert(strlen_c("another\0example") == 7UL, ""); |
- |
- } |
- |
- namespace test_rvalue_references |
- { |
- |
- template < int N > |
- struct answer |
- { |
- static constexpr int value = N; |
- }; |
- |
- answer<1> f(int&) { return answer<1>(); } |
- answer<2> f(const int&) { return answer<2>(); } |
- answer<3> f(int&&) { return answer<3>(); } |
- |
- void |
- test() |
- { |
- int i = 0; |
- const int c = 0; |
- static_assert(decltype(f(i))::value == 1, ""); |
- static_assert(decltype(f(c))::value == 2, ""); |
- static_assert(decltype(f(0))::value == 3, ""); |
- } |
- |
- } |
- |
- namespace test_uniform_initialization |
- { |
- |
- struct test |
- { |
- static const int zero {}; |
- static const int one {1}; |
- }; |
- |
- static_assert(test::zero == 0, ""); |
- static_assert(test::one == 1, ""); |
- |
- } |
- |
- namespace test_lambdas |
- { |
- |
- void |
- test1() |
- { |
- auto lambda1 = [](){}; |
- auto lambda2 = lambda1; |
- lambda1(); |
- lambda2(); |
- } |
- |
- int |
- test2() |
- { |
- auto a = [](int i, int j){ return i + j; }(1, 2); |
- auto b = []() -> int { return '0'; }(); |
- auto c = [=](){ return a + b; }(); |
- auto d = [&](){ return c; }(); |
- auto e = [a, &b](int x) mutable { |
- const auto identity = [](int y){ return y; }; |
- for (auto i = 0; i < a; ++i) |
- a += b--; |
- return x + identity(a + b); |
- }(0); |
- return a + b + c + d + e; |
- } |
- |
- int |
- test3() |
- { |
- const auto nullary = [](){ return 0; }; |
- const auto unary = [](int x){ return x; }; |
- using nullary_t = decltype(nullary); |
- using unary_t = decltype(unary); |
- const auto higher1st = [](nullary_t f){ return f(); }; |
- const auto higher2nd = [unary](nullary_t f1){ |
- return [unary, f1](unary_t f2){ return f2(unary(f1())); }; |
- }; |
- return higher1st(nullary) + higher2nd(nullary)(unary); |
- } |
- |
- } |
- |
- namespace test_variadic_templates |
- { |
- |
- template <int...> |
- struct sum; |
- |
- template <int N0, int... N1toN> |
- struct sum<N0, N1toN...> |
- { |
- static constexpr auto value = N0 + sum<N1toN...>::value; |
- }; |
- |
- template <> |
- struct sum<> |
- { |
- static constexpr auto value = 0; |
- }; |
- |
- static_assert(sum<>::value == 0, ""); |
- static_assert(sum<1>::value == 1, ""); |
- static_assert(sum<23>::value == 23, ""); |
- static_assert(sum<1, 2>::value == 3, ""); |
- static_assert(sum<5, 5, 11>::value == 21, ""); |
- static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, ""); |
- |
- } |
- |
- // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae |
- // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function |
- // because of this. |
- namespace test_template_alias_sfinae |
- { |
- |
- struct foo {}; |
- |
- template<typename T> |
- using member = typename T::member_type; |
- |
- template<typename T> |
- void func(...) {} |
- |
- template<typename T> |
- void func(member<T>*) {} |
- |
- void test(); |
- |
- void test() { func<foo>(0); } |
- |
- } |
- |
-} // namespace cxx11 |
- |
-#endif // __cplusplus >= 201103L |
- |
-]]) |
- |
- |
-dnl Tests for new features in C++14 |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[ |
- |
-// If the compiler admits that it is not ready for C++14, why torture it? |
-// Hopefully, this will speed up the test. |
- |
-#ifndef __cplusplus |
- |
-#error "This is not a C++ compiler" |
- |
-#elif __cplusplus < 201402L |
- |
-#error "This is not a C++14 compiler" |
- |
-#else |
- |
-namespace cxx14 |
-{ |
- |
- namespace test_polymorphic_lambdas |
- { |
- |
- int |
- test() |
- { |
- const auto lambda = [](auto&&... args){ |
- const auto istiny = [](auto x){ |
- return (sizeof(x) == 1UL) ? 1 : 0; |
- }; |
- const int aretiny[] = { istiny(args)... }; |
- return aretiny[0]; |
- }; |
- return lambda(1, 1L, 1.0f, '1'); |
- } |
- |
- } |
- |
- namespace test_binary_literals |
- { |
- |
- constexpr auto ivii = 0b0000000000101010; |
- static_assert(ivii == 42, "wrong value"); |
- |
- } |
- |
- namespace test_generalized_constexpr |
- { |
- |
- template < typename CharT > |
- constexpr unsigned long |
- strlen_c(const CharT *const s) noexcept |
- { |
- auto length = 0UL; |
- for (auto p = s; *p; ++p) |
- ++length; |
- return length; |
- } |
- |
- static_assert(strlen_c("") == 0UL, ""); |
- static_assert(strlen_c("x") == 1UL, ""); |
- static_assert(strlen_c("test") == 4UL, ""); |
- static_assert(strlen_c("another\0test") == 7UL, ""); |
- |
- } |
- |
- namespace test_lambda_init_capture |
- { |
- |
- int |
- test() |
- { |
- auto x = 0; |
- const auto lambda1 = [a = x](int b){ return a + b; }; |
- const auto lambda2 = [a = lambda1(x)](){ return a; }; |
- return lambda2(); |
- } |
- |
- } |
- |
- namespace test_digit_separators |
- { |
- |
- constexpr auto ten_million = 100'000'000; |
- static_assert(ten_million == 100000000, ""); |
- |
- } |
- |
- namespace test_return_type_deduction |
- { |
- |
- auto f(int& x) { return x; } |
- decltype(auto) g(int& x) { return x; } |
- |
- template < typename T1, typename T2 > |
- struct is_same |
- { |
- static constexpr auto value = false; |
- }; |
- |
- template < typename T > |
- struct is_same<T, T> |
- { |
- static constexpr auto value = true; |
- }; |
- |
- int |
- test() |
- { |
- auto x = 0; |
- static_assert(is_same<int, decltype(f(x))>::value, ""); |
- static_assert(is_same<int&, decltype(g(x))>::value, ""); |
- return x; |
- } |
- |
- } |
- |
-} // namespace cxx14 |
- |
-#endif // __cplusplus >= 201402L |
- |
-]]) |
- |
- |
-dnl Tests for new features in C++17 |
- |
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ |
- |
-// If the compiler admits that it is not ready for C++17, why torture it? |
-// Hopefully, this will speed up the test. |
- |
-#ifndef __cplusplus |
- |
-#error "This is not a C++ compiler" |
- |
-#elif __cplusplus <= 201402L |
- |
-#error "This is not a C++17 compiler" |
- |
-#else |
- |
-#if defined(__clang__) |
- #define REALLY_CLANG |
-#else |
- #if defined(__GNUC__) |
- #define REALLY_GCC |
- #endif |
-#endif |
- |
-#include <initializer_list> |
-#include <utility> |
-#include <type_traits> |
- |
-namespace cxx17 |
-{ |
- |
-#if !defined(REALLY_CLANG) |
- namespace test_constexpr_lambdas |
- { |
- |
- // TODO: test it with clang++ from git |
- |
- constexpr int foo = [](){return 42;}(); |
- |
- } |
-#endif // !defined(REALLY_CLANG) |
- |
- namespace test::nested_namespace::definitions |
- { |
- |
- } |
- |
- namespace test_fold_expression |
- { |
- |
- template<typename... Args> |
- int multiply(Args... args) |
- { |
- return (args * ... * 1); |
- } |
- |
- template<typename... Args> |
- bool all(Args... args) |
- { |
- return (args && ...); |
- } |
- |
- } |
- |
- namespace test_extended_static_assert |
- { |
- |
- static_assert (true); |
- |
- } |
- |
- namespace test_auto_brace_init_list |
- { |
- |
- auto foo = {5}; |
- auto bar {5}; |
- |
- static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value); |
- static_assert(std::is_same<int, decltype(bar)>::value); |
- } |
- |
- namespace test_typename_in_template_template_parameter |
- { |
- |
- template<template<typename> typename X> struct D; |
- |
- } |
- |
- namespace test_fallthrough_nodiscard_maybe_unused_attributes |
- { |
- |
- int f1() |
- { |
- return 42; |
- } |
- |
- [[nodiscard]] int f2() |
- { |
- [[maybe_unused]] auto unused = f1(); |
- |
- switch (f1()) |
- { |
- case 17: |
- f1(); |
- [[fallthrough]]; |
- case 42: |
- f1(); |
- } |
- return f1(); |
- } |
- |
- } |
- |
- namespace test_extended_aggregate_initialization |
- { |
- |
- struct base1 |
- { |
- int b1, b2 = 42; |
- }; |
- |
- struct base2 |
- { |
- base2() { |
- b3 = 42; |
- } |
- int b3; |
- }; |
- |
- struct derived : base1, base2 |
- { |
- int d; |
- }; |
- |
- derived d1 {{1, 2}, {}, 4}; // full initialization |
- derived d2 {{}, {}, 4}; // value-initialized bases |
- |
- } |
- |
- namespace test_general_range_based_for_loop |
- { |
- |
- struct iter |
- { |
- int i; |
- |
- int& operator* () |
- { |
- return i; |
- } |
- |
- const int& operator* () const |
- { |
- return i; |
- } |
- |
- iter& operator++() |
- { |
- ++i; |
- return *this; |
- } |
- }; |
- |
- struct sentinel |
- { |
- int i; |
- }; |
- |
- bool operator== (const iter& i, const sentinel& s) |
- { |
- return i.i == s.i; |
- } |
- |
- bool operator!= (const iter& i, const sentinel& s) |
- { |
- return !(i == s); |
- } |
- |
- struct range |
- { |
- iter begin() const |
- { |
- return {0}; |
- } |
- |
- sentinel end() const |
- { |
- return {5}; |
- } |
- }; |
- |
- void f() |
- { |
- range r {}; |
- |
- for (auto i : r) |
- { |
- [[maybe_unused]] auto v = i; |
- } |
- } |
- |
- } |
- |
- namespace test_lambda_capture_asterisk_this_by_value |
- { |
- |
- struct t |
- { |
- int i; |
- int foo() |
- { |
- return [*this]() |
- { |
- return i; |
- }(); |
- } |
- }; |
- |
- } |
- |
- namespace test_enum_class_construction |
- { |
- |
- enum class byte : unsigned char |
- {}; |
- |
- byte foo {42}; |
- |
- } |
- |
- namespace test_constexpr_if |
- { |
- |
- template <bool cond> |
- int f () |
- { |
- if constexpr(cond) |
- { |
- return 13; |
- } |
- else |
- { |
- return 42; |
- } |
- } |
- |
- } |
- |
- namespace test_selection_statement_with_initializer |
- { |
- |
- int f() |
- { |
- return 13; |
- } |
- |
- int f2() |
- { |
- if (auto i = f(); i > 0) |
- { |
- return 3; |
- } |
- |
- switch (auto i = f(); i + 4) |
- { |
- case 17: |
- return 2; |
- |
- default: |
- return 1; |
- } |
- } |
- |
- } |
- |
-#if !defined(REALLY_CLANG) |
- namespace test_template_argument_deduction_for_class_templates |
- { |
- |
- // TODO: test it with clang++ from git |
- |
- template <typename T1, typename T2> |
- struct pair |
- { |
- pair (T1 p1, T2 p2) |
- : m1 {p1}, |
- m2 {p2} |
- {} |
- |
- T1 m1; |
- T2 m2; |
- }; |
- |
- void f() |
- { |
- [[maybe_unused]] auto p = pair{13, 42u}; |
- } |
- |
- } |
-#endif // !defined(REALLY_CLANG) |
- |
- namespace test_non_type_auto_template_parameters |
- { |
- |
- template <auto n> |
- struct B |
- {}; |
- |
- B<5> b1; |
- B<'a'> b2; |
- |
- } |
- |
-#if !defined(REALLY_CLANG) |
- namespace test_structured_bindings |
- { |
- |
- // TODO: test it with clang++ from git |
- |
- int arr[2] = { 1, 2 }; |
- std::pair<int, int> pr = { 1, 2 }; |
- |
- auto f1() -> int(&)[2] |
- { |
- return arr; |
- } |
- |
- auto f2() -> std::pair<int, int>& |
- { |
- return pr; |
- } |
- |
- struct S |
- { |
- int x1 : 2; |
- volatile double y1; |
- }; |
- |
- S f3() |
- { |
- return {}; |
- } |
- |
- auto [ x1, y1 ] = f1(); |
- auto& [ xr1, yr1 ] = f1(); |
- auto [ x2, y2 ] = f2(); |
- auto& [ xr2, yr2 ] = f2(); |
- const auto [ x3, y3 ] = f3(); |
- |
- } |
-#endif // !defined(REALLY_CLANG) |
- |
-#if !defined(REALLY_CLANG) |
- namespace test_exception_spec_type_system |
- { |
- |
- // TODO: test it with clang++ from git |
- |
- struct Good {}; |
- struct Bad {}; |
- |
- void g1() noexcept; |
- void g2(); |
- |
- template<typename T> |
- Bad |
- f(T*, T*); |
- |
- template<typename T1, typename T2> |
- Good |
- f(T1*, T2*); |
- |
- static_assert (std::is_same_v<Good, decltype(f(g1, g2))>); |
- |
- } |
-#endif // !defined(REALLY_CLANG) |
- |
- namespace test_inline_variables |
- { |
- |
- template<class T> void f(T) |
- {} |
- |
- template<class T> inline T g(T) |
- { |
- return T{}; |
- } |
- |
- template<> inline void f<>(int) |
- {} |
- |
- template<> int g<>(int) |
- { |
- return 5; |
- } |
- |
- } |
- |
-} // namespace cxx17 |
- |
-#endif // __cplusplus <= 201402L |
- |
-]]) |