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complex (operator+(const complex<>&, const _Tp&), [...]): Do not assume real() returns a reference (against DR 387).

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2009-03-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/complex (operator+(const complex<>&, const _Tp&),
	operator+(const _Tp&, const complex<>&),
	operator-(const complex<>&, const _Tp&),
	operator-(const _Tp&, const complex<>&)): Do not assume real()
	returns a reference (against DR 387).
	* testsuite/26_numerics/complex/dr387_2.cc: New.

From-SVN: r144770
This commit is contained in:
Paolo Carlini 2009-03-11 01:51:59 +00:00 committed by Paolo Carlini
parent b1ab21e7f5
commit 23cdf8e8f6
3 changed files with 44 additions and 4 deletions
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9
libstdc++-v3/ChangeLog
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@ -1,3 +1,12 @@
2009-03-10 Paolo Carlini <paolo.carlini@oracle.com>
* include/std/complex (operator+(const complex<>&, const _Tp&),
operator+(const _Tp&, const complex<>&),
operator-(const complex<>&, const _Tp&),
operator-(const _Tp&, const complex<>&)): Do not assume real()
returns a reference (against DR 387).
* testsuite/26_numerics/complex/dr387_2.cc: New.
2009-03-02 Benjamin Kosnik <bkoz@redhat.com>
* testsuite/thread/pthread4.cc: Move...

8
libstdc++-v3/include/std/complex
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@ -333,7 +333,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
operator+(const complex<_Tp>& __x, const _Tp& __y)
{
complex<_Tp> __r = __x;
__r.real() += __y;
__r += __y;
return __r;
}
@ -342,7 +342,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
operator+(const _Tp& __x, const complex<_Tp>& __y)
{
complex<_Tp> __r = __y;
__r.real() += __x;
__r += __x;
return __r;
}
//@}
@ -363,7 +363,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
operator-(const complex<_Tp>& __x, const _Tp& __y)
{
complex<_Tp> __r = __x;
__r.real() -= __y;
__r -= __y;
return __r;
}
@ -372,7 +372,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
operator-(const _Tp& __x, const complex<_Tp>& __y)
{
complex<_Tp> __r(__x, -__y.imag());
__r.real() -= __y.real();
__r -= __y.real();
return __r;
}
//@}

31
libstdc++-v3/testsuite/26_numerics/complex/dr387_2.cc Normal file
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@ -0,0 +1,31 @@
// { dg-options "-std=gnu++0x" }
// { dg-do compile }
//
// Copyright (C) 2009 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 2, 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 COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
#include <complex>
// DR 387. std::complex over-encapsulated.
// http://gcc.gnu.org/ml/gcc/2009-03/msg00264.html
typedef std::complex<double> C;
C f1(C& c) { return c+1.0; }
C f2(C& c) { return c-1.0; }
C f3(C& c) { return 1.0+c; }
C f4(C& c) { return 1.0-c; }