ed962a66c5
This patch implements LWG4023 by adding explicit assertions for the added preconditions and also fixes a few tests that were violating these preconditions.
69 lines
1.9 KiB
C++
69 lines
1.9 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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// REQUIRES: has-unix-headers
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// UNSUPPORTED: libcpp-hardening-mode=none
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// XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
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// <streambuf>
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// template <class charT, class traits = char_traits<charT> >
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// class basic_streambuf;
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// void setg(char_type* gbeg, char_type* gnext, char_type* gend);
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#include <algorithm>
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#include <iterator>
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#include <streambuf>
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#include <string>
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#include "check_assertion.h"
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#include "make_string.h"
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#include "test_macros.h"
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template <class CharT>
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struct streambuf : public std::basic_streambuf<CharT> {
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typedef std::basic_streambuf<CharT> base;
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streambuf() {}
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void setg(CharT* gbeg, CharT* gnext, CharT* gend) { base::setg(gbeg, gnext, gend); }
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};
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template <class CharT>
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void test() {
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std::basic_string<CharT> str = MAKE_STRING(CharT, "ABCDEF");
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CharT arr[6];
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std::copy(str.begin(), str.end(), arr);
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{
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streambuf<CharT> buff;
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TEST_LIBCPP_ASSERT_FAILURE(
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buff.setg(std::begin(arr) + 1, std::begin(arr), std::end(arr)), "[gbeg, gnext) must be a valid range");
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}
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{
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streambuf<CharT> buff;
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TEST_LIBCPP_ASSERT_FAILURE(
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buff.setg(std::begin(arr) + 1, std::begin(arr) + 1, std::begin(arr)), "[gbeg, gend) must be a valid range");
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}
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{
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streambuf<CharT> buff;
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TEST_LIBCPP_ASSERT_FAILURE(
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buff.setg(std::begin(arr), std::begin(arr) + 3, std::begin(arr) + 2), "[gnext, gend) must be a valid range");
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}
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}
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int main(int, char**) {
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test<char>();
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test<wchar_t>();
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#endif
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return 0;
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}
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