Re: libstdc++/6745: Sever io problems on branch rdbuf

Re: libstdc++/6745: Sever io problems on branch rdbuf

[paolo]

Synopsis: Sever io problems on branch rdbuf

State-Changed-From-To: analyzed->closed
State-Changed-By: paolo
State-Changed-When: Wed Nov 20 13:27:10 2002
State-Changed-Why:
    Finally fixed with:
    http://gcc.gnu.org/ml/gcc-patches/2002-11/msg01264.html

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745

Re: libstdc++/6745: Sever io problems on branch rdbuf

[Joe Buck]

The following reply was made to PR libstdc++/6745; it has been noted by GNATS.

From: Joe Buck <jbuck@synopsys.com>
To: bkoz@nabi.net (B. Kosnik)
Cc: Joe.Buck@synopsys.COM (Joe Buck), bkoz@gcc.gnu.org, gcc-gnats@gcc.gnu.org,
   gcc-bugs@gcc.gnu.org, peter@snake.iap.physik.tu-darmstadt.de
Subject: Re: libstdc++/6745: Sever io problems on branch rdbuf
Date: Tue, 29 Oct 2002 08:47:56 -0800 (PST)

 I wrote:
 > >So, we still have a bug, but we no longer have a regression: this stuff
 > >works as well as it ever did.
 
 Benjamin Kosnik writes:
 > Again, I intend to look at this, but at the moment I am on the road. I
 > should be able to work on this at the end of this week.
 
 Since 6745 is no longer a regression, it seems that Mark would have to
 make an exception to the rules to even accept a patch for the branch.
 
 6746, also assigned to you, has higher priority.  It is a regression.
 

Re: libstdc++/6745: Sever io problems on branch rdbuf

[B. Kosnik]

The following reply was made to PR libstdc++/6745; it has been noted by GNATS.

From: "B. Kosnik" <bkoz@nabi.net>
To: Joe Buck <jbuck@synopsys.com>
Cc: bkoz@gcc.gnu.org, gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
   peter@snake.iap.physik.tu-darmstadt.de
Subject: Re: libstdc++/6745: Sever io problems on branch rdbuf
Date: Tue, 29 Oct 2002 05:47:29 -0800

 Again, I intend to look at this, but at the moment I am on the road. I
 should be able to work on this at the end of this week.
 
 
 >So, we still have a bug, but we no longer have a regression: this stuff
 >works as well as it ever did.

Re: libstdc++/6745: Sever io problems on branch rdbuf

[Joe Buck]

The following reply was made to PR libstdc++/6745; it has been noted by GNATS.

From: Joe Buck <jbuck@synopsys.com>
To: bkoz@gcc.gnu.org, gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
   peter@snake.iap.physik.tu-darmstadt.de
Cc:  
Subject: Re: libstdc++/6745: Sever io problems on branch rdbuf
Date: Mon, 28 Oct 2002 11:06:39 -0800

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745
 
 I'm going to downgrade the priority of this PR to "medium".  The reason 
 is based
 on Paolo's comment:
 
  > After private mail with Benjamin we believe that this PR
  > unfortunately must be kept open. In fact, the behaviour of
  > v2 is restored but something is still NOT ok in this area.
 
 So, we still have a bug, but we no longer have a regression: this stuff
 works as well as it ever did.
 
 So this one should not hold up 3.2.1.  Unfortunately, there are about 15
 other high-priority PRs.
 

Re: libstdc++/6745: Sever io problems on branch rdbuf

[paolo]

Synopsis: Sever io problems on branch rdbuf

State-Changed-From-To: closed->analyzed
State-Changed-By: paolo
State-Changed-When: Thu Oct 24 00:56:11 2002
State-Changed-Why:
    After private mail with Benjamin we believe that this PR
    unfortunately must be kept open. In fact, the behaviour of
    v2 is restored but something is still NOT ok in this area.
    Consider the following run time session for the testcase:
    
    paolo~>a.out
    dddd<NEWLINE>
    sssss<NEWLINE>
    <CTRL-D>
    dddd // echoed
    sssss // echoed
    <CTRL-D>
    paolo~>
    
    That is, after a <NEWLINE> no chars are echoed at all. They
    are all output together upon a first <CTRL-D>, then another
    is needed to end program execution.
    Compare to 3.0.4/STLPort/Icc:
    
    paolo~>a.out
    dddd<NEWLINE>
    dddd  // echoed
    sssss<NEWLINE>
    sssss  // echoed
    <CTRL-D>
    paolo~>
    
    Ciao, Paolo.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745

Re: libstdc++/6745: Sever io problems on branch rdbuf

[jbuck]

Synopsis: Sever io problems on branch rdbuf

State-Changed-From-To: analyzed->closed
State-Changed-By: jbuck
State-Changed-When: Wed Oct 23 15:03:20 2002
State-Changed-Why:
    Verified as no longer present either in 3.2 branch or trunk as of
    23-oct-2002.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745

Re: libstdc++/6745: Sever io problems on branch rdbuf

[bkoz]

Synopsis: Sever io problems on branch rdbuf

Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Wed May 29 05:04:08 2002
Responsible-Changed-Why:
    Mine.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745

Re: libstdc++/6745: Sever io problems on branch rdbuf

[paolo]

Synopsis: Sever io problems on branch rdbuf

State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Mon May 20 14:09:03 2002
State-Changed-Why:
    Confirmed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6745

libstdc++/6745: Sever io problems on branch rdbuf

[peter]

>Number:         6745
>Category:       libstdc++
>Synopsis:       Sever io problems on branch rdbuf
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 20 09:56:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Peter Schmid
>Release:        3.1.1 20020519 (prerelease)
>Organization:
TU Darmstadt
>Environment:
System: Linux kiste 2.4.18 #8 Sat Mar 9 15:33:15 CET 2002 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc/configure --enable-shared --disable-nls --enable-threads=posix --enable-languages=c,c++,f77,objc
>Description:
There are severe io related problems on the branch. I believe those
problems are related to the recent check-ins. For example, consider
the following code tc.C. When run interactively, typing ^D on the
keyboars has no effect, the program does not finish. When the input
and output file descriptors are redirected to files, the programm does not
terminate either. There are other io related problems I have not yet
investigated. For example, when running the boost regression suite,
the output of the html status file, cs-linux.html, is
truncated. "libs/config/test/config_info.cpp run" is the last line
(the first test of the regression suite), though all tests pass. 


>How-To-Repeat:
source code tc.C

#include <iostream>

int main ()
{
    std::cout << std::cin.rdbuf();
}

g++ -v -o tc tc.C -W -Wall
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/specs
Configured with: ../gcc/configure --enable-shared --disable-nls --enable-threads=posix --enable-languages=c,c++,f77,objc
Thread model: posix
gcc version 3.1.1 20020519 (prerelease)
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=1 -D__GNUC_PATCHLEVEL__=1 -D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ tc.C -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase tc.C -W -Wall -version -o /tmp/ccPq221W.s
GNU CPP version 3.1.1 20020519 (prerelease) (cpplib) (i386 Linux/ELF)
GNU C++ version 3.1.1 20020519 (prerelease) (i686-pc-linux-gnu)
	compiled by GNU C version 3.1.1 20020519 (prerelease).
ignoring nonexistent directory "NONE/include"
ignoring nonexistent directory "/usr/local/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include/g++-v3
 /usr/local/include/g++-v3/i686-pc-linux-gnu
 /usr/local/include/g++-v3/backward
 /usr/local/include
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/include
 /usr/include
End of search list.
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/../../../../i686-pc-linux-gnu/bin/as -V -Qy -o /tmp/ccd2RdDf.o /tmp/ccPq221W.s
GNU assembler version 020428 (i686-pc-linux-gnu) using BFD version 020428 20020428
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/collect2 --eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o tc /usr/lib/crt1.o /usr/lib/crti.o /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/crtbegin.o -L/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1 -L/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/../../../../i686-pc-linux-gnu/lib -L/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/../../.. /tmp/ccd2RdDf.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1.1/crtend.o /usr/lib/crtn.o

./tc < tc.C > aus // does not finish
./tc 
hallo
^D^D^D^D^D^D^D //does not return to shell either!
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: