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* Re: libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams
@ 2003-04-28 15:17 bkoz
0 siblings, 0 replies; 5+ messages in thread
From: bkoz @ 2003-04-28 15:17 UTC (permalink / raw)
To: bkoz, gcc-bugs, gcc-prs, nobody, peturr02
Synopsis: ios_base::sync_with_stdio clobbers standard streams
Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Mon Apr 28 15:17:14 2003
Responsible-Changed-Why:
Mine.
State-Changed-From-To: analyzed->feedback
State-Changed-By: bkoz
State-Changed-When: Mon Apr 28 15:17:14 2003
State-Changed-Why:
Petur, I don't think this is a bug. Again, with the "any":
If any input or output operation has occurred using the standard streams prior to the call, the effect is implementation-defined.
I don't believe your patch is needed for standards conformance, but let me look at it for other merits.
best,
benjamin
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9523
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams
@ 2003-04-28 17:17 bkoz
0 siblings, 0 replies; 5+ messages in thread
From: bkoz @ 2003-04-28 17:17 UTC (permalink / raw)
To: bkoz, gcc-bugs, gcc-prs, peturr02
Synopsis: ios_base::sync_with_stdio clobbers standard streams
State-Changed-From-To: feedback->closed
State-Changed-By: bkoz
State-Changed-When: Mon Apr 28 17:17:32 2003
State-Changed-Why:
Your related patch is in.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9523
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams
@ 2003-03-25 23:50 paolo
0 siblings, 0 replies; 5+ messages in thread
From: paolo @ 2003-03-25 23:50 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, paolo, peturr02
Synopsis: ios_base::sync_with_stdio clobbers standard streams
Responsible-Changed-From-To: paolo->unassigned
Responsible-Changed-By: paolo
Responsible-Changed-When: Tue Mar 25 23:39:36 2003
Responsible-Changed-Why:
Not really working on it, for the time being.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9523
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams
@ 2003-02-08 21:27 paolo
0 siblings, 0 replies; 5+ messages in thread
From: paolo @ 2003-02-08 21:27 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, paolo, peturr02
Synopsis: ios_base::sync_with_stdio clobbers standard streams
Responsible-Changed-From-To: unassigned->paolo
Responsible-Changed-By: paolo
Responsible-Changed-When: Sat Feb 8 21:27:56 2003
Responsible-Changed-Why:
Investigating...
State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Sat Feb 8 21:27:56 2003
State-Changed-Why:
Confirmed: upon a call of ios_base::sync_with_stdio(false)
ios_base is currently fully _destroyed_ and then recreated
in the new mode: meagre chances to keep intact the state ;)
Let's what we can do...
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9523
^ permalink raw reply [flat|nested] 5+ messages in thread
* libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams
@ 2003-01-31 12:26 peturr02
0 siblings, 0 replies; 5+ messages in thread
From: peturr02 @ 2003-01-31 12:26 UTC (permalink / raw)
To: gcc-gnats
>Number: 9523
>Category: libstdc++
>Synopsis: ios_base::sync_with_stdio clobbers standard streams
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Jan 31 12:26:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: peturr02@ru.is
>Release: gcc-3.2.1
>Organization:
>Environment:
Red Hat Linux 8.0
>Description:
If any changes are made to the state of the standard stream objects (cin, cout etc.) before ios_base::sync_with_stdio is called, that state is lost as a result of the call.
>How-To-Repeat:
See attachment.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="syncwstdiobug.cc"
Content-Disposition: inline; filename="syncwstdiobug.cc"
#include <iostream>
#undef NDEBUG
#include <cassert>
int main()
{
using namespace std;
int index = ios_base::xalloc();
cin.iword(index) = 5;
cout.iword(index) = 5;
cerr.iword(index) = 5;
clog.iword(index) = 5;
wcin.iword(index) = 5;
wcout.iword(index) = 5;
wcerr.iword(index) = 5;
wclog.iword(index) = 5;
ios_base::sync_with_stdio(false);
assert(cin.iword(index) == 5);
assert(cout.iword(index) == 5);
assert(cerr.iword(index) == 5);
assert(clog.iword(index) == 5);
assert(wcin.iword(index) == 5);
assert(wcout.iword(index) == 5);
assert(wcerr.iword(index) == 5);
assert(wclog.iword(index) == 5);
return 0;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
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2003-04-28 15:17 libstdc++/9523: ios_base::sync_with_stdio clobbers standard streams bkoz
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2003-04-28 17:17 bkoz
2003-03-25 23:50 paolo
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2003-01-31 12:26 peturr02
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