[Bug libc/18556] New: iostream header pollutes global namespace

[Bug libc/18556] New: iostream header pollutes global namespace

[demelier.david at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18556

            Bug ID: 18556
           Summary: iostream header pollutes global namespace
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: critical
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: demelier.david at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

I'm unable to compile the following code that should just compile fine:

#include <iostream>

struct Version {
        int major;

        Version(int vmajor)
                : major(vmajor)
        {
        }
};

int main()
{
        return 0;
}

See the error:

In file included from /usr/include/i386-linux-gnu/sys/types.h:222:0,
                 from /usr/include/stdlib.h:314,
                 from /usr/include/c++/4.9/cstdlib:72,
                 from /usr/include/c++/4.9/ext/string_conversions.h:41,
                 from /usr/include/c++/4.9/bits/basic_string.h:2850,
                 from /usr/include/c++/4.9/string:52,
                 from /usr/include/c++/4.9/bits/locale_classes.h:40,
                 from /usr/include/c++/4.9/bits/ios_base.h:41,
                 from /usr/include/c++/4.9/ios:42,
                 from /usr/include/c++/4.9/ostream:38,
                 from /usr/include/c++/4.9/iostream:39,
                 from prog.cpp:1:
prog.cpp: In constructor 'Version::Version(int)':
prog.cpp:7:5: error: class 'Version' does not have any field named
'gnu_dev_major'
   : major(vmajor)

This happens because glibc authors added their own additions to the C++
standard which breaks it.

Fix (choose one):

a. Remove these stupid macros
b. Stop including your own header files in standard C++ headers

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[Bug libc/18556] iostream header pollutes global namespace

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=18556

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Worksforme.  And <iostream> is not part of glibc.

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[Bug admin/18556] iostream header pollutes global namespace

[demelier.david at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18556

demelier.david at gmail dot com <demelier.david at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |carlos at redhat dot com,
                   |                            |roland at gnu dot org
          Component|libc                        |admin

--- Comment #2 from demelier.david at gmail dot com <demelier.david at gmail dot com> ---
Oh yeah I need to file the bug to libstdc++, I thought both C library and C++
library were developed there.

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