Bug 502251

Summary: <ostream> header includes <unistd.h> and pollutes :: namespace
Product: [Fedora] Fedora Reporter: c.r1
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: bkoz, jakub, mnowak
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2010-12-05 06:53:41 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description c.r1 2009-05-22 19:35:15 UTC
Description of problem:
The C++ headers <ostream> (and following, <iostream>, and maybe others) pollute the global namespace by including the <unistd.h> header, so there are unexpected symbols appearing at global level leading to confusion.

Version-Release number of selected component (if applicable):
g++ (GCC) 4.4.0 20090506 (Red Hat 4.4.0-4)
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.



How reproducible:
This program should compile fine:
#include <ostream>
struct link {};
void baz(link* bar) {}
int main()
{
	return 0;
}


Steps to Reproduce:
1. Compile the above program with g++
2. FAIL
3.
  
Actual results:
Compiler errors, 
[corni@localhost ~]$ g++ test.cpp 
test.cpp:3: error: variable or field ‘baz’ declared void
test.cpp:3: error: ‘bar’ was not declared in this scope


Expected results:
Compiling fine

Additional info:

Comment 1 Bug Zapper 2009-06-09 16:22:48 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 2 Michal Nowak 2009-08-14 13:22:34 UTC
Still present in Rawhide.

Comment 3 Bug Zapper 2009-11-16 10:00:20 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 4 Bug Zapper 2010-11-04 11:12:52 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 12's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 12 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
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The process we are following is described here: 
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Comment 5 Bug Zapper 2010-12-05 06:53:41 UTC
Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.