[Bug target/50944] New: gcc-4.6.x regression with complex.h on i386-pc-solaris2.10

["mariah.lenox at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50944

             Bug #: 50944
           Summary: gcc-4.6.x regression with complex.h on
                    i386-pc-solaris2.10
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mariah.lenox@gmail.com


This is reopening #48949 which got closed.

% gcc -c foo.c
foo.c: In function 'foo':
foo.c:5:11: error: '_Imaginary_I' undeclared (first use in this function)
foo.c:5:11: note: each undeclared identifier is reported only once for each
function it appears in
% 
% gcc-4.5.1 -c foo.c
%
% gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.6.1/sparc-SunOS-ultrasparc3/libexec/gcc/sparc-sun-solaris2.10/4.6.1/lto-wrapper
Target: sparc-sun-solaris2.10
Configured with: /usr/local/gcc-4.6.1/src/gcc-4.6.1/configure
--enable-languages=c,c++,fortran --with-gnu-as
--with-as=/usr/local/binutils-2.20.1/sparc-SunOS-ultrasparc3-gcc-4.4.3/bin/as
--with-gnu-ld
--with-ld=/usr/local/binutils-2.20.1/sparc-SunOS-ultrasparc3-gcc-4.4.3/bin/ld
--with-gmp=/usr/local/mpir-2.4.0/sparc-SunOS-ultrasparc3-gcc-4.6.0-abi32
--with-mpfr=/usr/local/mpfr-3.0.1/sparc-SunOS-ultrasparc3-mpir-2.4.0-gcc-4.6.0-abi32
--with-mpc=/usr/local/mpc-0.9/sparc-SunOS-ultrasparc3-mpir-2.4.0-mpfr-3.0.1-gcc-4.5.1-abi32
--prefix=/usr/local/gcc-4.6.1/sparc-SunOS-ultrasparc3
Thread model: posix
gcc version 4.6.1 (GCC) 
%
% cat foo.c
#include <complex.h>

double _Complex
foo () {
   return I;
}
%
% gcc -E foo.c | grep complex.h
# 1 "/usr/include/complex.h" 1 3 4
# 9 "/usr/include/complex.h" 3 4
#pragma ident "@(#)complex.h    1.9     04/10/23 SMI"
# 24 "/usr/include/complex.h" 3 4
# 61 "/usr/include/complex.h" 3 4
# 61 "/usr/include/complex.h" 3 4
% 
% diff /usr/include/complex.h
/usr/local/gcc-4.6.1/sparc-SunOS-ultrasparc3/inclu
de/c++/4.6.1/complex.h
1,4c1
< /*
<  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
<  * Use is subject to license terms.
<  */
---
> // -*- C++ -*- compatibility header.
6,7c3,9
< #ifndef _COMPLEX_H
< #define       _COMPLEX_H
---
> // Copyright (C) 2007, 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 3, or (at your option)
> // any later version.
9c11,14
< #pragma ident "@(#)complex.h  1.9     04/10/23 SMI"
---
> // 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.
11c16,18
< #if !defined(__cplusplus)
---
> // Under Section 7 of GPL version 3, you are granted additional
> // permissions described in the GCC Runtime Library Exception, version
> // 3.1, as published by the Free Software Foundation.
13,15c20,26
< /*
<  * Compilation environments for Solaris must provide the _Imaginary datatype
<  * and the compiler intrinsics _Complex_I and _Imaginary_I
---
> // You should have received a copy of the GNU General Public License and
> // a copy of the GCC Runtime Library Exception along with this program;
> // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
> // <http://www.gnu.org/licenses/>.
> 
> /** @file complex.h
>  *  This is a Standard C++ Library header.
17,22d27
< #define       _Complex_I      _Complex_I
< #define       complex         _Complex
< #define       _Imaginary_I    _Imaginary_I
< #define       imaginary       _Imaginary
< #undef        I
< #define       I               _Imaginary_I
24,45c29
< extern float cabsf(float complex);
< extern float cargf(float complex);
< extern float cimagf(float complex);
< extern float crealf(float complex);
< extern float complex cacosf(float complex);
< extern float complex cacoshf(float complex);
< extern float complex casinf(float complex);
< extern float complex casinhf(float complex);
< extern float complex catanf(float complex);
< extern float complex catanhf(float complex);
< extern float complex ccosf(float complex);
< extern float complex ccoshf(float complex);
< extern float complex cexpf(float complex);
< extern float complex clogf(float complex);
< extern float complex conjf(float complex);
< extern float complex cpowf(float complex, float complex);
< extern float complex cprojf(float complex);
< extern float complex csinf(float complex);
< extern float complex csinhf(float complex);
< extern float complex csqrtf(float complex);
< extern float complex ctanf(float complex);
< extern float complex ctanhf(float complex);
---
> #include <bits/c++config.h>
47,61c31,32
< extern double cabs(double complex);
< extern double carg(double complex);
< extern double cimag(double complex);
< extern double creal(double complex);
< extern double complex cacos(double complex);
< extern double complex cacosh(double complex);
< extern double complex casin(double complex);
< extern double complex casinh(double complex);
< extern double complex catan(double complex);
< extern double complex catanh(double complex);
< extern double complex ccos(double complex);
< extern double complex ccosh(double complex);
< extern double complex cexp(double complex);
< #if defined(__PRAGMA_REDEFINE_EXTNAME)
< #pragma redefine_extname clog __clog
---
> #ifdef __GXX_EXPERIMENTAL_CXX0X__
> # include <ccomplex>
63,64c34,36
< #undef        clog
< #define       clog    __clog
---
> # if _GLIBCXX_HAVE_COMPLEX_H
> #  include_next <complex.h>
> # endif
66,74d37
< extern double complex clog(double complex);
< extern double complex conj(double complex);
< extern double complex cpow(double complex, double complex);
< extern double complex cproj(double complex);
< extern double complex csin(double complex);
< extern double complex csinh(double complex);
< extern double complex csqrt(double complex);
< extern double complex ctan(double complex);
< extern double complex ctanh(double complex);
76,97c39,40
< extern long double cabsl(long double complex);
< extern long double cargl(long double complex);
< extern long double cimagl(long double complex);
< extern long double creall(long double complex);
< extern long double complex cacoshl(long double complex);
< extern long double complex cacosl(long double complex);
< extern long double complex casinhl(long double complex);
< extern long double complex casinl(long double complex);
< extern long double complex catanhl(long double complex);
< extern long double complex catanl(long double complex);
< extern long double complex ccoshl(long double complex);
< extern long double complex ccosl(long double complex);
< extern long double complex cexpl(long double complex);
< extern long double complex clogl(long double complex);
< extern long double complex conjl(long double complex);
< extern long double complex cpowl(long double complex, long double complex);
< extern long double complex cprojl(long double complex);
< extern long double complex csinhl(long double complex);
< extern long double complex csinl(long double complex);
< extern long double complex csqrtl(long double complex);
< extern long double complex ctanhl(long double complex);
< extern long double complex ctanl(long double complex);
---
> #ifndef _GLIBCXX_COMPLEX_H
> #define _GLIBCXX_COMPLEX_H 1
99,101c42
< #endif        /* !defined(__cplusplus) */
< 
< #endif        /* _COMPLEX_H */
---
> #endif
%