Thread: using strstr (Segmentation fault)

Hi guys/gals,

First post, read the faq etc... anyways... sorry for my lack of knowledge in C... I haave a "CSV" file
that I am trying to read and locate text from... so far the reading part is not the problem.. according to valgrind all is well... untill I decide to use strstr() for my word allocation.... now this is were it keeps failing... I understand the error.. but I can not ping point how to fix it it... here is what I get from valgrind

Code:

==5492== Invalid read of size 1
==5492==    at 0x4C25EC2: strlen (mc_replace_strmem.c:275)
==5492==    by 0x4E92EDF: puts (in /lib64/libc-2.9.so)
==5492==    by 0x4008EC: main (fieldFingers.c:49)
==5492==  Address 0x0 is not stack'd, malloc'd or (recently) free'd

and here is my code.

Code:

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

struct fp_fields {
   char *f1;
};

int resetFile (FILE *fp)
{
    int z;

    fseek (fp, 0, SEEK_END);
    z  = ftell (fp);
    fseek (fp, 0, SEEK_SET);

    return z; 
}


int main (void)
{
    int fsize;
    char *f1, *buffer;
    char *fname = "users.CSV";
    FILE *fpntr;
    
    if ((fpntr = fopen (fname, "r"))  == NULL)
    {
       printf ("Error: %d\n", errno);
       return EXIT_FAILURE;      
    }

    fsize  = resetFile (fpntr);
    buffer = malloc (fsize * sizeof (int) + 1);

    while (fgets (buffer, 1024, fpntr) != NULL)
    {
	 printf ("%s\n", strstr (buffer, "USERS"));
	 
	 //rfp_fields (buffer);
    }
  
    printf ("total bytes: %d\n", fsize);

    free (buffer);
    fclose (fpntr);
    
    buffer = '\0';
    return EXIT_SUCCESS;
}

anyways...I decided to use malloc on buffer cause I though that maybe that would help, but I guess not... sorry for my stupid code, its something that I am trying to do for work and trying to get in to C at the same time... as I did long ago... I also have a K&R book.. that is great finished reading it

ahhh! right!! damn me... thanx Salem!!! your great.