Re: libstdc++/3983: basic_istringstream<unsigned xxx> causes segfault

Re: libstdc++/3983: basic_istringstream<unsigned xxx> causes segfault

[pme]

Synopsis: basic_istringstream<unsigned xxx> causes segfault

State-Changed-From-To: open->analyzed
State-Changed-By: pme
State-Changed-When: Mon Mar 11 11:12:56 2002
State-Changed-Why:
    Reproduced with 3.1 20020310 and 3.2 20020310 (both
    segfaults before any output).  I don't think this has ever
    worked before, so it's technically not a regression.  A
    similar problem is under discussion on the libstdc++ list.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3983

Re: libstdc++/3983: basic_istringstream<unsigned xxx> causes segfault

[bkoz]

Synopsis: basic_istringstream<unsigned xxx> causes segfault

State-Changed-From-To: feedback->closed
State-Changed-By: bkoz
State-Changed-When: Wed Apr  3 12:36:26 2002
State-Changed-Why:
    Fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3983

Re: libstdc++/3983: basic_istringstream<unsigned xxx> causes segfault

[bkoz]

Synopsis: basic_istringstream<unsigned xxx> causes segfault

Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Tue Apr  2 18:36:17 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: analyzed->feedback
State-Changed-By: bkoz
State-Changed-When: Tue Apr  2 18:36:17 2002
State-Changed-Why:
    Fixed with:
    
    2002-04-02  Benjamin Kosnik  <bkoz@redhat.com>
    	
    	libstdc++/5268
    	* src/ios.cc: (ios_base::Init::_S_ios_destroy): Remove flush calls.
    	* testsuite/27_io/ios_init.cc (tests04): Add test.
    
    	libstdc++/3983
    	* include/bits/basic_ios.h (basic_ios::_M_get_fctype_ios): Remove.
    	(basic_ios::_M_ios_fctype): Consistently name to _M_fctype.
    	* include/bits/basic_ios.tcc: Same. Remove outdated comments.
    	* include/bits/istream.tcc: Use _M_fctype, make consistent with
    	ostream.
    	* testsuite/27_io/ios_init.cc (tests03): Add test.
    	

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3983

libstdc++/3983: basic_istringstream<unsigned xxx> causes segfault

[corsepiu]

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>Number:         3983
>Category:       libstdc++
>Synopsis:       basic_istringstream<unsigned xxx> causes segfault
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 10 06:16:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ralf Corsepius
>Release:        unknown-1.0
>Organization:
>Environment:
gcc -v
Reading specs from /opt/gcc30/lib/gcc-lib/i486-suse-linux/3.0.1/specs
Configured with: ../configure --enable-threads=posix --enable-long-long --prefix=/opt/gcc30 --mandir=/opt/gcc30/man --infodir=/opt/gcc30/info --with-local-prefix=/usr/local --enable-languages=c,c++ --disable-nls --enable-shared --with-system-zlib --host=i486-suse-linux --build=i486-suse-linux
Thread model: posix
gcc version 3.0.1 20010807 (prerelease)

SuSE-Linux-7.2/glibc-2.2.2/Linux-2.4.7
>Description:
Using an unsigned template parameter with basic_istringstream<>
(Eg. unsigned char, unsigned int) causes random program output and segfaults.
>How-To-Repeat:
Compile and run the program below:

----- snip ------
#include <sstream>
#include <iostream>

using namespace std;

int main ( )
{
  int v ;
  unsigned char s[2] ;
  s[0] = '1';
  s[1] = 0;
  basic_istringstream<unsigned char> strm(s);
  strm >> v ;
//  cerr << "result: " << v << endl ;
  return 0;
}
----- snip -----

g++ -Wall -g -o foo foo.cc

./foo
foo: (h!@x÷ÿ¿o?@
foo: (h!@x÷ÿ¿o?@
Speicherzugriffsfehler (core dumped)

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: