At 09:30 AM 3/7/2005, you wrote:
The latest version of cygwin1.dll ("cygwin1.dll" v0.0 ts=2005/3/1 11:01) does not return the correct exit status when a Cygwin application is called from Windows. Older versions such as ("cygwin1.dll" v0.0 ts=2004/11/10 8:34) do.
Example:
Create the bash script - error4.sh ------------------------------------------------- # # simple script to return the exit status of 4 # exit 4 -------------------------------------------------
The from the Windows command prompt run the following:
C:\TMP> bash error4.sh C:\TMP> echo %errorlevel%
For an older cygwin1.dll the output is: 4
For the newest cygwin1.dll the output is: 1024
See <http://sources.redhat.com/ml/cygwin/2005-01/msg01382.html>. Also look at the similar thread about this same issue last week:
<http://sourceware.org/ml/cygwin/2005-03/msg00088.html>. This is all
as-designed/as-intended.
--
Larry Hall http://www.rfk.com
RFK Partners, Inc. (508) 893-9779 - RFK Office
838 Washington Street (508) 893-9889 - FAX
Holliston, MA 01746
Thank you that was exactly the problem. To "fix it" for returning an expected status to a Windows program I wrote a wrapper utility which calls a CYGWIN program and fixes the exit status. This program works with old and new CYGWIN and Non-CYGWIN programs.
Two very big caveats:
1) build this utility with non-CYGWIN tools such as Visual C++, Borland or MinGW so its exit status is not broken.
2) the path of the executable must not contain any spaces.
I hope this utility helps others.
-Zevel
------------------------ File: FixStatus.cpp ------------------------- // // Utility to fix exit status from CYGWIN programs. // // If status passed on command line is greater than 255, // then use high byte as status // #include <stdio.h> #include <stdlib.h> #include <string.h>
int main(int argc, char** argv)
{
bool bVerbose = false;
int nStatus = 0;
int ac = 1;
char szCommand[4096] = {0};
int nIndex; while(ac < argc)
{
char* av = argv[ac++]; if(*av == '-')
{ // option
switch(av[1])
{
default:
printf("Invalid option: %s\n", av);
/*FALLTHROUGH*/
case '?':
case 'h':
printf("Usage: FixStatus [-h] command
[arguments]\n");
exit(0);
}
}
else
{ // first argument is executable - copy to command buffer
nIndex = sprintf(szCommand, av);
break;
}
} while(ac < argc)
{ // build up command line by quoting other arguments
nIndex += sprintf(szCommand + nIndex, " \"%s\"", argv[ac++]);}
nStatus = system(szCommand);
if(nStatus >= 256)
{ // need to fix status from new CYGWIN
nStatus >>= 8;
}
nStatus &= 0x00ff;
exit(nStatus);
return(0); // to quiet compiler
}
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