61 lines
3.7 KiB
C++
61 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <sal/config.h>
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#include <ostream>
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#include <rtl/strbuf.hxx>
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#include <rtl/string.hxx>
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#include <rtl/ustrbuf.hxx>
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#include <rtl/ustring.hxx>
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#include <sal/log.hxx>
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// Determine whether std::ostream operator << for sal_Unicode* (aka char16_t*) is deleted (see
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// <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1423r3.html> "char8_t backward
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// compatibility remediation", as implemented now by
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// <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=0c5b35933e5b150df0ab487efb2f11ef5685f713>
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// "libstdc++: P1423R3 char8_t remediation (2/4)" for -std=c++2a; TODO: the checks here and the
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// relevant code in loplugin:getstr should eventually be removed once support for the deleted
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// operators is widespread):
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#if __cplusplus > 201703L \
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&& (defined __GLIBCXX__ || defined _MSC_VER \
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|| (defined _LIBCPP_VERSION && _LIBCPP_VERSION >= 16000))
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#define HAVE_DELETED_OPERATORS true
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#else
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#define HAVE_DELETED_OPERATORS false
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#endif
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using S = OString;
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void f(std::ostream& st, OString const& s1, OStringBuffer const& s2,
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OUString const& s3[[maybe_unused]], OUStringBuffer const& s4[[maybe_unused]], S const& s5,
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OString* p1, OStringBuffer* p2, OUString* p3[[maybe_unused]],
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OUStringBuffer* p4[[maybe_unused]], S* p5, char const* (OString::*pf)() const)
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{
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st << s1.getStr() // expected-error-re {{directly use object of type '{{(rtl::)?}}OString' in a call of 'operator <<', instead of calling 'getStr' first [loplugin:getstr]}}
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<< s2.getStr()
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#if !HAVE_DELETED_OPERATORS
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<< s3.getStr() // expected-error-re {{suspicious use of 'getStr' on an object of type '{{(rtl::)?}}OUString'; the result is implicitly cast to a void pointer in a call of 'operator <<' [loplugin:getstr]}}
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<< s4.getStr() // expected-error-re {{suspicious use of 'getStr' on an object of type '{{(rtl::)?}}OUStringBuffer'; the result is implicitly cast to a void pointer in a call of 'operator <<' [loplugin:getstr]}}
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#endif
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<< s5.getStr() // expected-error {{directly use object of type 'S' (aka 'rtl::OString') in a call of 'operator <<', instead of calling 'getStr' first [loplugin:getstr]}}
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<< p1->getStr() // expected-error {{directly use object of type 'rtl::OString' in a call of 'operator <<', instead of calling 'getStr' first [loplugin:getstr]}}
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<< p2->getStr()
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#if !HAVE_DELETED_OPERATORS
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<< p3->getStr() // expected-error {{suspicious use of 'getStr' on an object of type 'rtl::OUString'; the result is implicitly cast to a void pointer in a call of 'operator <<' [loplugin:getstr]}}
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<< p4->getStr() // expected-error {{suspicious use of 'getStr' on an object of type 'rtl::OUStringBuffer'; the result is implicitly cast to a void pointer in a call of 'operator <<' [loplugin:getstr]}}
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#endif
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<< p5->getStr() // expected-error {{directly use object of type 'rtl::OString' in a call of 'operator <<', instead of calling 'getStr' first [loplugin:getstr]}}
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<< (s1.*pf)();
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SAL_INFO( // expected-error-re 1+ {{directly use object of type '{{(rtl::)?}}OString' in a call of 'operator <<', instead of calling 'getStr' first [loplugin:getstr]}}
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"test", s1.getStr());
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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