[Bug libstdc++/62082] New: cout fails to work with auto variable initialized with curvy brackets

[Bug libstdc++/62082] New: cout fails to work with auto variable initialized with curvy brackets

[aleksej.penkov at hotmail dot com]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62082

            Bug ID: 62082
           Summary: cout fails to work with auto variable initialized with
                    curvy brackets
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: aleksej.penkov at hotmail dot com

This simple code (compiled with -std=c++11 -Wall):
#include <iostream>

int main()
{
    double d = 5.5;
    auto a {d};

    std::cout<<d<<' '<<a<<std::endl;
}

gives this compilation error:
2.cpp: In function ‘int main()’:
2.cpp:8:14: error: cannot bind ‘std::basic_ostream<char>’ lvalue to
‘std::basic_ostream<char>&&’
  std::cout<<d<<' '<<a<<std::endl;
              ^
In file included from /usr/local/include/c++/4.9.1/iostream:39:0,
                 from 2.cpp:1:
/usr/local/include/c++/4.9.1/ostream:602:5: note: initializing argument 1 of
‘std::basic_ostream<_CharT, _Traits>&
std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&) [with _CharT
= char; _Traits = std::char_traits<char>; _Tp = std::initializer_list<double>]’
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^

If i replace
auto a {d};
with
auto a = d;

it works fine.
>From gcc-bugs-return-458112-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 10 14:46:18 2014
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Subject: [Bug libstdc++/62082] cout fails to work with auto variable initialized with curvy brackets
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb082

--- Comment #1 from Aleksej <aleksej.penkov at hotmail dot com> ---
Created attachment 33284
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id3284&actioníit
source file with issue

[Bug libstdc++/62082] cout fails to work with auto variable initialized with curvy brackets

[daniel.kruegler at googlemail dot com]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62082

Daniel Krügler <daniel.kruegler at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel.kruegler@googlemail.
                   |                            |com

--- Comment #2 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
The error is not a symptom of a library implementation error. Instead, the
reason for this compile-error is, that

auto a {d};

defines an object a of type

std::initializer_list<double> 

and there does not exist any IO inserter for such types. When you declare

auto a = d;

this defines an object a of type

double

Therefore I consider this bug report as invalid.
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From: "j at uriah dot heep.sax.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/62084] New: [avr] ICE: in convert_debug_memory_address
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb084

            Bug ID: 62084
           Summary: [avr] ICE: in convert_debug_memory_address
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: j at uriah dot heep.sax.de

Created attachment 33286
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id3286&actioníit
Preprocessed source triggering the issue

When compiling the SVN version of avr-libc, I get the following ICE:

% env LANG=C avr-gcc -gdwarf-2 -Wall -W -Wstrict-prototypes -mmcu=avr2
-mcall-prologues -Os -S strftime.i
../../../libc/time/strftime.c: In function 'pgm_copystring':
../../../libc/time/strftime.c:56:1: internal compiler error: in
convert_debug_memory_address, at cfgexpand.c:2528
 pgm_copystring(const char __memx * p, unsigned char i, char *b, unsigned char
l)
 ^
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

This can also be observed with GCC 4.8.3.

Omitting the -gdwarf-2 option makes the issue go away.

[Bug libstdc++/62082] cout fails to work with auto variable initialized with curvy brackets

[aleksej.penkov at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62082

Aleksej <aleksej.penkov at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID
           Severity|normal                      |trivial

--- Comment #3 from Aleksej <aleksej.penkov at hotmail dot com> ---
Not a bug according to the note from Daniel Krügler.
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Subject: [Bug c++/60228] ICE using lambda in #pragma omp declare reduction
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`228

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I would not call this valid, because OpenMP 4.0 doesn't support C++11, thus
using C++11 constructs inside of OpenMP constructs is invalid.