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From: "one2001boy AT yahoo DOT com" <one2001boy AT yahoo DOT com>
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Newsgroups: comp.os.msdos.djgpp
Subject: ls.exe in execv
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Date: Fri, 21 Jan 2005 08:40:08 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hello,

In windows,

does anybody know if there is a solution for not hanging when run 
execv()? it seems that running notepad.exe is fine, however, running 
"ls.exe" compiled with djgpp will hangup the application. Here is the 
the sample code.

#include <windows.h>
#include <stdio.h>
int main() {
     char ** environ=_environ;/**** SYSTEM DEFINED ENVIRONMENT POINTER */
     int retval;

     /* this is OK
     char *argv[] = {"C:\\WINDOWS\\SYSTEM32\\notepad.exe", NULL};
     retval = execv("C:\\WINDOWS\\SYSTEM32\\notepad.exe",  argv);
     */

     /*  this will hang
     */
     char *argv[] = {"C:\\bin\\ls.exe", "C:\\", NULL};
     retval = execv("C:\\bin\\ls.exe",  argv);

     printf("if successful, this should not be printed out\n");
     if(retval == -1) {
         fprintf(stderr, "ERROR: 'exec' failed\n");
         perror("exec");
         exit(-1);
     }
     exit(0);
}


thanks.