[Bug c++/60611] New: friend function declaration rejected when the namespace in which it is declared is not explicitely specified in the declaration

[Bug c++/60611] New: friend function declaration rejected when the namespace in which it is declared is not explicitely specified in the declaration

[nicolas.bertolotti at mathworks dot fr]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60611

            Bug ID: 60611
           Summary: friend function declaration rejected when the
                    namespace in which it is declared is not explicitely
                    specified in the declaration
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nicolas.bertolotti at mathworks dot fr

Created attachment 32419
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32419&action=edit
Source file to reproduce the issue

If you compile the following piece of code using g++ (4.7.2):
"
class class1; 

namespace ns1 { 

class class2; 
class class3; 
}

ns1::class3 *func(ns1::class2 * cfg, const class1 * def); 

namespace ns1 { 

class class4 { 
#ifdef WORKAROUND
friend ns1::class3 *(::func)(ns1::class2 * cfg, const class1 * def);
#else
friend class3 *(::func)(class2 * cfg, const class1 * def); 
#endif
}; 
}
" (also attached)
you get the following:
$ g++ -c test.cpp
test.cpp:17:25: error: ‘func’ is neither function nor member function; cannot
be declared friend
test.cpp:17:23: error: expected ‘;’ at end of member declaration
test.cpp:17:32: error: expected ‘)’ before ‘*’ token

Now, if you explicitely add the namespaces as they appear in the initial
declaration (add -DWORKAROUND), the compilation succeeds.
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From: "tasptz at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60612] New: Throwing exception, catching and rethrowing (std::exception_ptr) in destructor leads to segfault
Date: Fri, 21 Mar 2014 14:11:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`612

            Bug ID: 60612
           Summary: Throwing exception, catching and rethrowing
                    (std::exception_ptr) in destructor leads to segfault
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tasptz at gmail dot com

Created attachment 32420
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id2420&actioníit
Test source file

See attached sample.
Compiled with gcc 4.7 (g++-4.7 (Ubuntu/Linaro 4.7.3-2ubuntu1~12.04) 4.7.3) the
program runs and exits normally. Compiled with gcc 4.8 a segfault occurs.

#0  0x0000000000000000 in ?? ()
#1  0x00007ffff7b34c76 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x00007ffff7b33d39 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff7b348ea in __gxx_personality_v0 () from
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff75d3803 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1
#5  0x00007ffff75d3b9b in _Unwind_RaiseException () from
/lib/x86_64-linux-gnu/libgcc_s.so.1
#6  0x00007ffff7b34c5a in
std::rethrow_exception(std::__exception_ptr::exception_ptr) () from
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x0000000000400cb1 in A::~A() ()
#8  0x0000000000400bc4 in main ()

version:
g++ (GCC) 4.8.2

system:
Linux gpustation 3.5.0-21-generic #32~precise1-Ubuntu SMP Thu Dec 13 20:26:47
UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

gcc configure:
--enable-languages=c,c++

example compilation:
g++ -std=c++11 -o main main.cpp

[Bug c++/60611] friend function declaration rejected when the namespace in which it is declared is not explicitely specified in the declaration

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60611

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-03-21
     Ever confirmed|0                           |1