From owner-freebsd-bugs  Tue Oct 26 23:50: 4 1999
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Date: Tue, 26 Oct 1999 23:43:56 -0700 (PDT)
From: zh_xf@yahoo.com
To: freebsd-gnats-submit@freebsd.org
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Subject: misc/14551: strsep() 
Sender: owner-freebsd-bugs@FreeBSD.ORG
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X-Loop: FreeBSD.org


>Number:         14551
>Category:       misc
>Synopsis:       strsep()
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Oct 26 23:50:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Zhang,xiaofeng
>Release:        3.0 maybe
>Organization:
inforian
>Environment:
unix
>Description:
Hi:
 I am a new user to FreeBSD.
When I use the following program,I expected the out put would be;
argv=aaa
argv=bbbb
argv=dd
argv=kkkk 

but actually the output is
argv=
argv=bbbb
argv=dd
argv=kkkk 

I don't where argv[0] was missing.


#include <string.h>
#include <stdio.h>

void main(){
char **ap, *argv[10],*inputstring; //[10]
int i;

 strcpy(inputstring,"aaa\tbbbb\tdd\tkkkk");

		     for (ap = argv; (*ap = strsep(&inputstring, "\t")) != NULL;)
           		           if (**ap != '\0')
	                            if (++ap >= &argv[10])
                                      break;
	for(i=0;i<4;i++) 		printf("argv=%s\n",argv[i]);
                                   
}
>How-To-Repeat:

>Fix:
Sorry to use following method to fix the problem

#include <string.h>
#include <stdio.h>

void main(){
char **ap, *argv[10],*inputstring; //[10]
char s3[32];
 int i;
 strcpy(inputstring,"aaa\tbbbb\tdd\tkkkk");
 
 i=0;
  
		     for (ap = argv; (*ap = strsep(&inputstring, "\t")) != NULL;)
				{
           					if(i==0)
           					    strcpy(s3,*ap);		
              		          i++;
           		           if (**ap != '\0')
                            if (++ap >= &argv[10])
                                      break;
            }
            
	strcpy(argv[0],s3);	
	for(i=0;i<4;i++) 		printf("argv=%s\n",argv[i]);
	
}


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


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