Memory Fault

[Sys Admin]

I got this code from sactoh0!jak (Jay A. Konigsberg)
he wrote the simped editor

when I run simped and try to put any lines in to the file or read any lines
in a existing file I get a core dump

This is the Stack Trace from sdb
------------------------------------------------------------------------
Core file 'core' Memory Fault (11) at 
14 files, 14 procedures.
0x8319c in strdup:23:       buffer[stringinx] = string[stringinx];
>strdup(string="Now is the time.")  [strdup.c:23]
allocate()
addlines(text=0x092d44,overflow=Data address not found
>
------------------------------------------------------------------------
This is the code for strdup.c
any help is appreciated

/*
 * strdup - duplicate a string using malloc
 * CODE NOT TESTED, HOWEVER IT SHOULD WORK FINE FOR simped.
 * ===============
 */
#include "simped.h"

char *strdup(string)
char *string;
{
/*static char *buffer;*/
char *buffer, *malloc();

int stringinx;

if (buffer = (char *) malloc(strlen(string)) == NULL)
    {
    fprintf(stderr, "malloc: in strdup, error\n");
    exit(2);
    }

for (stringinx=0; stringinx <= strlen(string); ++stringinx)
    buffer[stringinx] = string[stringinx];

return(buffer);

}

_____________________________________Glen_______________________________________
______________________________Lexington__Oklahoma_______________________________
______________________{uunet uunet.uu.net}!uokmax!S5000!gh______________________
-- 

_____________________________________Glen_______________________________________
______________________________Lexington__Oklahoma_______________________________
______________________{uunet uunet.uu.net}!uokmax!S5000!gh______________________