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libstdc++: Combine two std::from_chars tests into one

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We don't need separate tests for the C++17 and C++20 cases, we can just
have one test that uses __cpp_char8_t to adjust whether it tests char8_t
or not. This means the C++20 one doesn't fail if -fno-char8_t is used.

libstdc++-v3/ChangeLog:

	* testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
	using a struct of that name if -fno-char8_t is active.
	* testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
This commit is contained in:
Jonathan Wakely 2024-04-02 21:22:01 +01:00
parent 2c1c2485a4
commit 87bc20676c
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2 changed files with 7 additions and 43 deletions
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43
libstdc++-v3/testsuite/20_util/from_chars/1_c++20_neg.cc
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@ -1,43 +0,0 @@
// Copyright (C) 2017-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do compile { target c++20 } }
#include <charconv>
void
test01(const char* first, const char* last)
{
wchar_t wc;
std::from_chars(first, last, wc); // { dg-error "no matching" }
std::from_chars(first, last, wc, 10); // { dg-error "no matching" }
char8_t c8;
std::from_chars(first, last, c8); // { dg-error "no matching" }
std::from_chars(first, last, c8, 10); // { dg-error "no matching" }
char16_t c16;
std::from_chars(first, last, c16); // { dg-error "no matching" }
std::from_chars(first, last, c16, 10); // { dg-error "no matching" }
char32_t c32;
std::from_chars(first, last, c32); // { dg-error "no matching" }
std::from_chars(first, last, c32, 10); // { dg-error "no matching" }
enum E { } e;
std::from_chars(first, last, e); // { dg-error "no matching" }
std::from_chars(first, last, e, 10); // { dg-error "no matching" }
}
// { dg-prune-output "enable_if" }
// { dg-prune-output "cannot bind non-const lvalue reference" }

7
libstdc++-v3/testsuite/20_util/from_chars/1_neg.cc
View File

@ -36,6 +36,13 @@ test01(const char* first, const char* last)
enum E { } e;
std::from_chars(first, last, e); // { dg-error "no matching" }
std::from_chars(first, last, e, 10); // { dg-error "no matching" }
#ifndef __cpp_char8_t
struct char8_t { };
#endif
char8_t c8;
std::from_chars(first, last, c8); // { dg-error "no matching" }
std::from_chars(first, last, c8, 10); // { dg-error "no matching" }
}
// { dg-prune-output "enable_if" }