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2.95.3-10 streams cause seg-fault


The following program crashes when compiled with g++-2:

---------start cyggcc295bug.cxx-------
#include <fstream>

int main()
{
  char buffer[1024];
  std::ifstream fin("./cyggcc295bug.cxx");
  if(fin)
    {
    fin.getline(buffer, 10); // Running a.exe crashes here.
    return 0;
    }
  return 1;
}
---------end cyggcc295bug.cxx-------

If you save the above program into  g++-2 cyggcc295bug.cxx

Then try this:
g++-2 cyggcc295bug.cxx
./a.exe
(seg fault)


g++ cyggcc295bug.cxx
./a.exe
(works)

It works when compiled with g++ (which is g++ 3.3.1)  

There seem to be several reports of this bug :
http://www.cygwin.com/ml/cygwin/2003-09/msg01533.html
http://www.cygwin.com/ml/cygwin/2003-09/msg01831.html
http://www.cygwin.com/ml/cygwin/2003-09/msg00994.html

However, it has been suggested that the posters use the newer g++ (3.3).
I acknowledge that it works with the 3.3.1 compiler.
However, there are reasons to use gcc 2.95 based compilers.



Here is the output of cygcheck -svr:

Cygwin Win95/NT Configuration Diagnostics
Current System Time: Fri Oct 03 11:01:02 2003

Windows XP Professional Ver 5.1 Build 2600 Service Pack 1

Path:	C:\cygwin\usr\local\bin
	C:\cygwin\bin
	C:\cygwin\bin
	C:\cygwin\usr\sbin
	C:\cygwin\sbin
	c:\WINDOWS\system32
	c:\WINDOWS
	c:\WINDOWS\System32\Wbem
	c:\Program Files\Common Files\Adaptec Shared\System

Output from C:\cygwin\bin\id.exe (nontsec)
UID: 11140(kingb) GID: 513(None)
513(None)

Output from C:\cygwin\bin\id.exe (ntsec)
UID: 11140(kingb) GID: 513(None)
547(Power Users)    545(Users)
10545(mkgroup_l_d)

SysDir: C:\WINDOWS\System32
WinDir: C:\WINDOWS

CYGWIN = `ntsec tty'
HOME = `C:\cygwin\home\kingb'
MAKE_MODE = `unix'
PWD = `/c/Brad/Programs/CMake-gcc-2'
USER = `kingb'

ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\kingb\Application Data'
BLOCKER_FOR_ZPROFILE = `1'
BLOCKER_FOR_ZSHENV = `1'
BOOST_ROOT = `c:/Brad/Programs/Boost'
CC = `gcc-2'
CFLAGS = `-g -Wall -W'
COLORFGBG = `15;default;0'
COLORTERM = `rxvt-xpm'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
COMPUTERNAME = `MOONGLOW'
COMSPEC = `C:\WINDOWS\system32\cmd.exe'
CVS_RSH = `ssh'
CXX = `g++-2'
CXXFLAGS = `-g -Wall -W -Woverloaded-virtual -Wunused'
DISPLAY = `:0'
HISTFILE = `/home/kingb/.zsh_history'
HISTSIZE = `10000'
HOMEDRIVE = `C:'
HOMEPATH = `\Documents and Settings\kingb'
INCLUDE = `C:\Program Files\Microsoft Visual Studio .NET 2003\SDK\v1.1\include\;C:\Program Files\Microsoft Visual Studio .NET\FrameworkSDK\include\'
LESS = `--LONG-PROMPT --chop-long-lines --ignore-case'
LESSCHARSET = `latin1'
LIB = `C:\Program Files\Microsoft Visual Studio .NET 2003\SDK\v1.1\Lib\;C:\Program Files\Microsoft Visual Studio .NET\FrameworkSDK\Lib\'
LOGNAME = `KINGB'
LOGONSERVER = `\\TRIPOINT'
LS_OPTIONS = `--literal --file-type --color=auto --tabsize=0'
MANPATH = `:/usr/ssl/man'
MANWIDTH = `80'
NUMBER_OF_PROCESSORS = `1'
OLDPWD = `/c/Brad/Programs'
OS = `Windows_NT'
PARAVIEW_SETUP_SCRIPT = `. ~/Setup/paraview_env.sh'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.tcl'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 15 Model 2 Stepping 4, GenuineIntel'
PROCESSOR_LEVEL = `15'
PROCESSOR_REVISION = `0204'
PROGRAMFILES = `C:\Program Files'
PS1 = `(%n@%m)[%h] %~ %% '
PYTHON_ROOT = `c:/Python22'
PYTHON_VERSION = `2.2'
SAVEHIST = `10000'
SESSIONNAME = `Console'
SHELL = `/bin/zsh'
SHLVL = `1'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINDOWS'
TEMP = `c:\DOCUME~1\kingb\LOCALS~1\Temp'
TERM = `xterm'
TMP = `c:\DOCUME~1\kingb\LOCALS~1\Temp'
TZ = `EST5EST4,M4.1.0/2,M10.5.0/2'
USERDNSDOMAIN = `KITWAREIN.COM'
USERDOMAIN = `KITWAREIN'
USERNAME = `KINGB'
USERPROFILE = `C:\Documents and Settings\kingb'
VS71COMNTOOLS = `C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\Tools\'
VSCOMNTOOLS = `"C:\Program Files\Microsoft Visual Studio .NET\Common7\Tools\"'
WINDIR = `C:\WINDOWS'
WINDOWID = `168048080'
WINDOWMANAGER = `blackbox'
_ = `/usr/bin/cygcheck'

HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
  (default) = `/cygdrive'
  cygdrive flags = 0x00000020
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
  (default) = `C:\cygwin'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
  (default) = `C:\cygwin/bin'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
  (default) = `C:\cygwin/lib'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options

c:  hd  NTFS   57192Mb  87% CP CS UN PA FC
d:  cd  CDFS     544Mb 100%    CS              DN600ENU2
e:  cd           N/A    N/A

C:\cygwin      /          system  textmode
C:\cygwin/bin  /usr/bin   system  textmode
C:\cygwin/lib  /usr/lib   system  textmode
.              /cygdrive  system  textmode,cygdrive

Found: C:\cygwin\bin\awk.exe
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cp.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\grep.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\mv.exe
Found: C:\cygwin\bin\rm.exe
Found: C:\cygwin\bin\sed.exe
Found: C:\cygwin\bin\sh.exe
Found: C:\cygwin\bin\tar.exe

   61k 2003/08/09 C:\cygwin\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
                  "cygbz2-1.dll" v0.0 ts=2003/8/9 2:35
  842k 2003/09/30 C:\cygwin\bin\cygcrypto-0.9.7.dll - os=4.0 img=1.0 sys=4.0
                  "cygcrypto-0.9.7.dll" v0.0 ts=2003/9/30 12:49
  645k 2003/04/11 C:\cygwin\bin\cygcrypto.dll - os=4.0 img=1.0 sys=4.0
                  "cygcrypto.dll" v0.0 ts=2003/4/11 6:37
  380k 2002/07/24 C:\cygwin\bin\cygdb-3.1.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb-3.1.dll" v0.0 ts=2002/7/24 12:24
  487k 2002/07/24 C:\cygwin\bin\cygdb_cxx-3.1.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb_cxx-3.1.dll" v0.0 ts=2002/7/24 12:25
  132k 2003/07/12 C:\cygwin\bin\cygexpat-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygexpat-0.dll" v0.0 ts=2003/7/12 7:33
   45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
                  "cygform5.dll" v0.0 ts=2001/4/25 1:28
   35k 2002/01/09 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
                  "cygform6.dll" v0.0 ts=2002/1/9 1:03
   48k 2003/08/09 C:\cygwin\bin\cygform7.dll - os=4.0 img=1.0 sys=4.0
                  "cygform7.dll" v0.0 ts=2003/8/9 5:25
   28k 2003/07/20 C:\cygwin\bin\cyggdbm-3.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm-3.dll" v0.0 ts=2003/7/20 3:58
   30k 2003/08/11 C:\cygwin\bin\cyggdbm-4.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm-4.dll" v0.0 ts=2003/8/10 22:12
   19k 2003/03/22 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm.dll" v0.0 ts=2002/2/19 22:05
   15k 2003/07/20 C:\cygwin\bin\cyggdbm_compat-3.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm_compat-3.dll" v0.0 ts=2003/7/20 4:00
   15k 2003/08/11 C:\cygwin\bin\cyggdbm_compat-4.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm_compat-4.dll" v0.0 ts=2003/8/10 22:13
   69k 2003/08/10 C:\cygwin\bin\cyggettextlib-0-12-1.dll - os=4.0 img=1.0 sys=4.0
                  "cyggettextlib-0-12-1.dll" v0.0 ts=2003/8/10 18:10
   12k 2003/08/10 C:\cygwin\bin\cyggettextpo-0.dll - os=4.0 img=1.0 sys=4.0
                  "cyggettextpo-0.dll" v0.0 ts=2003/8/10 18:11
  134k 2003/08/10 C:\cygwin\bin\cyggettextsrc-0-12-1.dll - os=4.0 img=1.0 sys=4.0
                  "cyggettextsrc-0-12-1.dll" v0.0 ts=2003/8/10 18:10
   17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory4.dll" v0.0 ts=2001/1/6 23:34
   29k 2003/08/10 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory5.dll" v0.0 ts=2003/8/10 19:16
  958k 2003/08/10 C:\cygwin\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
                  "cygiconv-2.dll" v0.0 ts=2003/8/10 16:57
   22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-1.dll" v0.0 ts=2001/12/13 4:28
   37k 2003/08/10 C:\cygwin\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-2.dll" v0.0 ts=2003/8/10 17:50
   26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu5.dll" v0.0 ts=2001/4/25 1:27
   20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu6.dll" v0.0 ts=2002/1/9 1:03
   29k 2003/08/09 C:\cygwin\bin\cygmenu7.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu7.dll" v0.0 ts=2003/8/9 5:25
  156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++5.dll" v0.0 ts=2001/4/25 1:29
  175k 2002/01/09 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++6.dll" v0.0 ts=2002/1/9 1:03
  226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses5.dll" v0.0 ts=2001/4/25 1:17
  202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses6.dll" v0.0 ts=2002/1/9 1:03
  224k 2003/08/09 C:\cygwin\bin\cygncurses7.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses7.dll" v0.0 ts=2003/8/9 5:24
   15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel5.dll" v0.0 ts=2001/4/25 1:27
   12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel6.dll" v0.0 ts=2002/1/9 1:03
   19k 2003/08/09 C:\cygwin\bin\cygpanel7.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel7.dll" v0.0 ts=2003/8/9 5:24
   67k 2003/09/10 C:\cygwin\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcre-0.dll" v0.0 ts=2003/9/10 10:25
   63k 2003/04/11 C:\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcre.dll" v0.0 ts=2003/4/11 4:31
   15k 2003/09/10 C:\cygwin\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcreposix-0.dll" v0.0 ts=2003/9/10 10:25
   61k 2003/04/11 C:\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcreposix.dll" v0.0 ts=2003/4/11 4:31
 1100k 2003/08/29 C:\cygwin\bin\cygperl5_8_0.dll - os=4.0 img=1.0 sys=4.0
                  "cygperl5_8_0.dll" v0.0 ts=2003/8/29 6:20
   22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpopt-0.dll" v0.0 ts=2002/6/9 1:45
  108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline4.dll" v0.0 ts=2001/1/6 23:34
  148k 2003/08/10 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline5.dll" v0.0 ts=2003/8/10 19:16
  171k 2003/09/30 C:\cygwin\bin\cygssl-0.9.7.dll - os=4.0 img=1.0 sys=4.0
                  "cygssl-0.9.7.dll" v0.0 ts=2003/9/30 12:49
  165k 2003/04/11 C:\cygwin\bin\cygssl.dll - os=4.0 img=1.0 sys=4.0
                  "cygssl.dll" v0.0 ts=2003/4/11 6:37
   60k 2003/08/09 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
                  "cygz.dll" v0.0 ts=2003/8/9 2:28
  949k 2003/09/20 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2003/9/20 16:31
    Cygwin DLL version info:
        DLL version: 1.5.5
        DLL epoch: 19
        DLL bad signal mask: 19005
        DLL old termios: 5
        DLL malloc env: 28
        API major: 0
        API minor: 94
        Shared data: 3
        DLL identifier: cygwin1
        Mount registry: 2
        Cygnus registry name: Cygnus Solutions
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Cygwin mount registry name: mounts v2
        Cygdrive flags: cygdrive flags
        Cygdrive prefix: cygdrive prefix
        Cygdrive default prefix:
        Build date: Sat Sep 20 16:31:15 EDT 2003
        CVS tag: cr-0x9b
        Shared id: cygwin1S3


Cygwin Package Information
Last downloaded files to: C:\Brad\Installs\Cygwin
Last downloaded files from: ftp://archive.progeny.com/cygwin

Package              Version
_update-info-dir     00221-1
ash                  20020731-3
autoconf             2.57a-1
autoconf-devel       2.57-2
autoconf-stable      2.13-5
automake             1.7.5a-1
automake-devel       1.7.6-2
automake-stable      1.4p5-6
base-files           2.6-1
base-passwd          1.1-1
bash                 2.05b-15
binutils             20030901-1
bison                20030307-1
bzip2                1.0.2-5
clear                1.0-1
cpio                 2.5-3
crypt                1.0-2
cvs                  1.11.6-3
cygrunsrv            0.96-2
cygutils             1.2.1-2
cygwin               1.5.5-1
cygwin-doc           1.3-6
diffutils            2.8.4-1
editrights           1.01-1
expat                1.95.6-2
file                 4.03-2
fileutils            4.1-2
findutils            4.1.7-4
flex                 2.5.4a-3
gawk                 3.1.3-3
gcc                  3.3.1-2
gcc-mingw            20030911-3
gcc2                 2.95.3-10
gdb                  20030919-1
gdbm                 1.8.3-7
grep                 2.5-1
groff                1.18.1-2
gzip                 1.3.5-1
inetutils            1.3.2-25
less                 381-1
libbz2_1             1.0.2-5
libdb3.1             3.1.17-2
libgdbm              1.8.0-5
libgdbm-devel        1.8.3-7
libgdbm3             1.8.3-3
libgdbm4             1.8.3-7
libgettextpo0        0.12.1-3
libiconv2            1.9.1-3
libintl1             0.10.40-1
libintl2             0.12.1-3
libncurses5          5.2-1
libncurses6          5.2-8
libncurses7          5.3-4
libpcre              4.1-1
libpcre0             4.4-2
libpopt0             1.6.4-4
libreadline4         4.1-2
libreadline5         4.3-5
login                1.9-7
m4                   1.4-1
make                 3.80-1
man                  1.5j-2
mingw-runtime        3.1-1
mktemp               1.5-3
ncurses              5.3-4
opengl               1.1.0-6
openssh              3.7.1p2-1
openssl              0.9.7c-1
openssl096           0.9.6j-1
patch                2.5.8-8
perl                 5.8.0-5
python               2.3-2
readline             4.3-5
rxvt                 2.7.10-3
sed                  4.0.7-3
sh-utils             2.0.15-4
tar                  1.13.25-3
tcltk                20030901-1
termcap              20021106-2
terminfo             5.3_20030726-1
texinfo              4.2-4
textutils            2.0.21-1
vim                  6.2.098-1
w32api               2.4-1
wget                 1.8.2-2
which                1.5-2
zip                  2.3-5
zlib                 1.1.4-4
zsh                  4.0.7-2
Use -h to see help about each section



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