Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
Sender: cygwin-owner AT sourceware DOT cygnus DOT com
Delivered-To: mailing list cygwin AT sourceware DOT cygnus DOT com
Message-ID: <375695A6.CD580658@1c.ru>
Date: Thu, 03 Jun 1999 18:48:06 +0400
From: Vadim Egorov <egorovv AT 1c DOT ru>
X-Mailer: Mozilla 4.6 [en] (WinNT; I)
X-Accept-Language: ru,en
MIME-Version: 1.0
To: cygwin users <cygwin AT sourceware DOT cygnus DOT com>
Subject: division by zero
Content-Type: text/plain; charset=koi8-r
Content-Transfer-Encoding: 8bit
X-MDaemon-Deliver-To: cygwin AT sourceware DOT cygnus DOT com
X-Return-Path: EgorovV AT 1c DOT ru

Hello,

Trying to build libstdc++-v3 under cygwin I came across one problem.
Build process hangs while trying to determine system abilities to trap 
numerical errors.

This situation can be reproduced by the following code snippet:

------------------

#include <stdio.h>
#include <signal.h>
#include <setjmp.h>

jmp_buf env;

void signal_handler(int sig) 
{ 
    longjmp(env, sig); 
}

int main()
{
    for( int i = 0; i < 100 ; i++)
    {
        signal(SIGFPE, signal_handler);
        if (setjmp(env) == 0) 
        {
            int a = 1;
            int b = 0;
            a/=b;
        }
        printf("step %d\n", i);
    }
    return 1;
}

------------------


This program hangs after first iteration.
If i replace 
	a/=b;  
with
	a/b;  
it does what it is supposed to.
Could anyone shed any light on this problem?


cygcheck -v -s output applied.

Regards
Vadim


[stl1]# cygcheck -v -s

Cygnus Win95/NT Configuration Diagnostics
Current System Time: Thu Jun 03 18:23:16 1999

WinNT Ver 4.0 build 1381 Service Pack 5

Path:	/mnt/e/cygwin20/root/usr/egcs/bin
	/mnt/e/Cygwin20/root/usr/local/bin
	/mnt/e/Cygwin20/Cygwin-b20/H-i586-cygwin32/bin
	/mnt/e/Cygwin20/root/usr/X11R6.4/bin
	/qub
	/mnt/e/winnt/system32
	/mnt/e/ntreskit
	/mnt/e/mssdk/bin
	/mnt/c/batch
	/mnt/e/programs/emacs-20.3.9.1/bin
	/mnt/e/WINNT/system32
	/mnt/e/WINNT
	/mnt/e/NTRESKIT
	/mnt/e/WINNT/system32/nls/ENGLISH
	/mnt/e/WINNT/system32/nls
	/mnt/e/MSSDK/Bin
	/mnt/e/MSSDK/Bin/WinNT
	/mnt/c/tools
	/mnt/c/batch
	/mnt/d/utils/mew8
	//L/bin
	//R/bin
	/mnt/e/WINNT/neozilla/ngt/bin
	/mnt/e/programs/gnuserv

SysDir: E:\WINNT\System32
WinDir: E:\WINNT

CYGWIN = `binmode title strip-title glob tty nontea '
GCC_EXEC_PREFIX = `/usr/egcs/lib/gcc-lib/'
HOME = `/mnt/f/home'
MAKE_MODE = `unix'
PWD = `/mnt/f/dev/Misc/stl1'
TCL_LIBRARY = `E:\Cygwin20\Cygwin-b20\share\tcl8.0\'

BASEMAKE = `E:\MSSDK\Include\bkoffice.mak'
BASH_ENV = `~/.bash_exec'
BKOFFICE = `E:\MSSDK\'
COMPUTERNAME = `EGOROVV'
COMSPEC = `E:\WINNT\system32\cmd.exe'
CPU = `i386'
CVSROOT = `/home/cvsroot'
CYGFS = `E:/Cygwin20/Cygwin-b20'
CYGREL = `B20'
CYGROOT = `E:\Cygwin20\Cygwin-b20'
DISPLAY = `localhost:0.0'
EMACS = `t'
EMACSDATA = `E:\programs\emacs-20.3.9.1\etc'
EMACSDOC = `E:\programs\emacs-20.3.9.1\etc'
EMACSLOADPATH =
`E:\programs\elisp\my;E:\programs\gnuserv;E:\programs\elisp\tiny980701;E:\programs\emacs-20.3.9.1\site-lisp;E:\programs\emacs-20.3.9.1\lisp'
EMACSLOCKDIR = `E:\programs\emacs-20.3.9.1\lock'
EMACSPATH = `E:\programs\emacs-20.3.9.1\bin'
EMACS_DIR = `E:/programs/emacs-20.3.9.1'
EM_PARENT_PROCESS_ID = `221'
GCC_BASE_DIR = `/usr/egcs'
GDBTK_LIBRARY = `E:/Cygwin20/Cygwin-b20/share/gdbtcl'
HOMEDRIVE = `F:'
HOMEPATH = `\users\default'
HOME_DEFAULT = `F:\'
HOME_EXISTS = `yes'
HOME_SAVE = `F:\HOME'
HOSTNAME = `egorovv'
HOSTTYPE = `i386'
INCLUDE =
`X:\odbcsdk\include;L:\INCLUDE;L:\STD;L:\OT50\INCLUDE;R:\INCLUDE;R:\STD;R:\OT50\INCLUDE'
INFOPATH = `/info'
INPUTRC = `f:/home/.inputrc'
LD = `/cygnus/H-i586-cygwin32/bin/ld.exe'
LIB = `L:\LIB;R:\LIB'
MACHTYPE = `i386-pc-cygwin32'
MSINPUT = `E:\WINNT\Msinput'
MY_ELISP = `E:\programs\elisp\my;E:\programs\gnuserv'
NTRESKIT = `E:\NTRESKIT'
NUMBER_OF_PROCESSORS = `1'
NWLANGUAGE = `ENGLISH'
NWUSERNAME = `EgorovV'
OS2LIBPATH = `E:\WINNT\system32\os2\dll;'
OS = `Windows_NT'
OSTYPE = `cygwin32'
PATHEXT = `.COM;.EXE;.BAT;.CMD'
PATH_SAVE =
`E:\WINNT\system32;E:\WINNT;E:\NTRESKIT;E:\WINNT\system32\nls\ENGLISH;E:\WINNT\system32\nls;E:\MSSDK\Bin;E:\MSSDK\Bin\WinNT;C:\tools;C:\batch;D:\utils\mew8;L:\bin;R:\bin;E:\WINNT\neozilla\ngt\bin'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 3 Stepping 3, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0303'
PROMPT = `$P$G'
PS1 = `[\W]# '
SGML_CATALOG_FILES =
`/home/catalog/html4.soc:/home/catalog/html32.soc:/home/catalog/html.soc'
SHELL = `/bin/bash'
SHLVL = `1'
SYSTEMDRIVE = `E:'
SYSTEMROOT = `E:\WINNT'
TEMP = `F:\TEMP'
TERM = `emacs'
TERMCAP = `emacs:co#120:tc=unknown:'
TINY_ELISP = `E:\programs\elisp\tiny980701'
TMP = `/tmp'
TMPDIR = `F:\TEMP'
USERDOMAIN = `BRAIN'
USERNAME = `egorovv'
USERPROFILE = `E:\WINNT\Profiles\egorovv'
USERROOT = `E:\Cygwin20\root'
WINDIR = `E:\WINNT'
_ = `/mnt/e/Cygwin20/Cygwin-b20/H-i586-cygwin32/bin/cygcheck'

Use `-r' to scan registry

a:\ fd  FAT        1Mb  94% CP    UN           
b:\ fd           N/A    N/A                    
c:\ hd  FAT      101Mb  62% CP    UN           BOOT
d:\ hd  FAT     1592Mb  58% CP    UN           FAT
e:\ hd  NTFS    2447Mb  79% CP CS UN PA FC     SYS
f:\ hd  NTFS    4353Mb  80% CP CS UN PA FC     DATA
g:\ cd  CDFS       0Mb -2147483548%    CS              Audio CD
j:\ net NWFS    4090Mb  76% CP          FC     VOL1
l:\ hd  NTFS    4353Mb  80% CP CS UN PA FC     DATA
m:\ net NWFS    4348Mb  52% CP          FC     VOL4
r:\ net NTFS    5600Mb 100% CP CS UN PA FC     VOL1
t:\ net NTFS   16331Mb  85% CP CS UN PA FC     
w:\ net NTFS    4133Mb  69% CP CS UN PA FC     VOL2
x:\ net NTFS    5600Mb 100% CP CS UN PA FC     VOL1
y:\ net NTFS    5600Mb 100% CP CS UN PA FC     VOL1
z:\ net          N/A    N/A                    

E:\cygwin20\root        /          native  text=binary
e:\cygwin20\cygwin-b20  /cygnus    native  text=binary
\\.\a:                  /dev/fd0   native  text=binary
\\.\b:                  /dev/fd1   native  text=binary
f:\home                 /home      native  text=binary
f:\home\src             /home/src  native  text!=binary
f:\docs\info            /info      native  text!=binary
c:                      /mnt/c     native  text=binary
d:                      /mnt/d     native  text=binary
e:                      /mnt/e     native  text=binary
f:                      /mnt/f     native  text=binary
g:                      /mnt/g     native  text=binary
w:                      /mnt/w     native  text=binary
x:                      /mnt/x     native  text=binary
y:                      /mnt/y     native  text=binary
e:\programs\perl        /qub       native  text=binary
f:\temp                 /tmp       native  text=binary

Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\bash.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cat.exe
Found: e:\ntreskit\cat.exe
Warning: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cat.exe hides
e:\ntreskit\cat.exe
Not Found: cpp (good!)
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\find.exe
Found: e:\cygwin20\root\usr\egcs\bin\gcc.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\gcc.exe
Warning: e:\cygwin20\root\usr\egcs\bin\gcc.exe hides
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\gcc.exe
Found: e:\Cygwin20\root\usr\local\bin\gdb.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\gdb.exe
Warning: e:\Cygwin20\root\usr\local\bin\gdb.exe hides
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\gdb.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\ld.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\ls.exe
Found: e:\ntreskit\ls.exe
Warning: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\ls.exe hides
e:\ntreskit\ls.exe
Found: e:\Cygwin20\root\usr\local\bin\make.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\make.exe
Warning: e:\Cygwin20\root\usr\local\bin\make.exe hides
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\make.exe
Found: c:\tools\make.exe
Warning: e:\Cygwin20\root\usr\local\bin\make.exe hides c:\tools\make.exe
Found: e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\sh.exe

  371k 1998/12/01
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygtcl80.dll - os=4.0 img=1.0
sys=4.0
                  "cygtcl80.dll" v0.0 ts=1998/12/1 11:25
    5k 1998/12/01
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygtclpip80.dll - os=4.0
img=1.0 sys=4.0
   10k 1998/12/01
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygtclreg80.dll - os=4.0
img=1.0 sys=4.0
                  "cygtclreg80.dll" v0.0 ts=1998/12/1 11:25
  600k 1998/12/01 e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygtk80.dll
- os=4.0 img=1.0 sys=4.0
                  "cygtk80.dll" v0.0 ts=1998/12/1 11:28
 4898k 1999/04/19 e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygwin1.dll
- os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=1999/4/19 10:27
 4898k 1999/04/19
e:\Cygwin20\Cygwin-b20\H-i586-cygwin32\bin\cygwinb19.dll - os=4.0
img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=1999/4/19 10:27
Use -h to see help about each section


-- 
*********************************************
Vadim Egorov, 1C      *       Вадим Егоров,1C
egorovv AT 1c DOT ru         *         egorovv AT 1c DOT ru
*********************************************


--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com