73d94b1916
This requires the __builtin_source_location() builtin, as implemented by GCC and Clang. Fixes https://github.com/llvm/llvm-project/issues/56363 Differential Revision: https://reviews.llvm.org/D120634
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// UNSUPPORTED: clang-14, clang-15
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// UNSUPPORTED: apple-clang-14
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#include <source_location>
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#include <cassert>
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#include <concepts>
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#include <cstdint>
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#include <cstring>
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#include <type_traits>
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#include "test_macros.h"
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static_assert(std::is_nothrow_move_constructible_v<std::source_location>, "support.srcloc.cons (1.1)");
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static_assert(std::is_nothrow_move_assignable_v<std::source_location>, "support.srcloc.cons (1.2)");
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static_assert(std::is_nothrow_swappable_v<std::source_location>, "support.srcloc.cons (1.3)");
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ASSERT_NOEXCEPT(std::source_location());
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ASSERT_NOEXCEPT(std::source_location::current());
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// Note: the standard doesn't strictly require the particular values asserted
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// here, but does "suggest" them. Additional tests for details of how the
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// implementation of current() chooses which location to report for more complex
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// scenarios are in the Clang test-suite, and not replicated here.
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// A default-constructed value.
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constexpr std::source_location empty;
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static_assert(empty.line() == 0);
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static_assert(empty.column() == 0);
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static_assert(empty.file_name()[0] == '\0');
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static_assert(empty.function_name()[0] == '\0');
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ASSERT_NOEXCEPT(empty.line());
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ASSERT_NOEXCEPT(empty.column());
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ASSERT_NOEXCEPT(empty.file_name());
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ASSERT_NOEXCEPT(empty.function_name());
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std::same_as<uint_least32_t> auto line = empty.line();
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std::same_as<uint_least32_t> auto column = empty.column();
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std::same_as<const char*> auto file = empty.file_name();
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std::same_as<const char*> auto function = empty.function_name();
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// A simple use of current() outside a function.
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constexpr std::source_location cur =
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#line 1000 "ss"
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std::source_location::current();
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static_assert(cur.line() == 1000);
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static_assert(cur.column() > 0);
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static_assert(cur.file_name()[0] == 's' && cur.file_name()[1] == 's' && cur.file_name()[2] == '\0');
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static_assert(cur.function_name()[0] == '\0');
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// and inside a function.
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int main(int, char**) {
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auto local =
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#line 2000
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std::source_location::current();
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assert(strcmp(local.file_name(), "ss") == 0);
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assert(strstr(local.function_name(), "main") != nullptr);
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assert(local.line() == 2000);
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assert(local.column() > 0);
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// Finally, the type should be copy-constructible
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auto local2 = cur;
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assert(strcmp(local2.file_name(), cur.file_name()) == 0);
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assert(strcmp(local2.function_name(), cur.function_name()) == 0);
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assert(local2.line() == cur.line());
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assert(local2.column() == cur.column());
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// and copy-assignable.
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local = cur;
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assert(strcmp(local.file_name(), cur.file_name()) == 0);
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assert(strcmp(local.function_name(), cur.function_name()) == 0);
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assert(local.line() == cur.line());
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assert(local.column() == cur.column());
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return 0;
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}
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