Reg seg. violations

[Bill McEnaney]

I hear that segmenation faults happen when the computer tries to follow
a null pointer.  the getenv() function returns NULL when that function
fails.  So why not try something likes this?

printf("Content-type: text/html\n\n");
if (getenv("QUERY_STRING") != NULL)
{ 
  line_buffer = (char *) malloc(strlen(QUERY_STRING) + 1);
  strcpy(line_buffer, getenv("QUERY_STRING");
}

Bill
 
Vivek Katakam wrote:

> Hi all
> 
> I  am mainly getting segmentation violation at this code in strlen and
strcpy:
> 
>  printf("Content-type: text/html\n\n");
> line_buffer = (char *) malloc(strlen(getenv("QUERY_STRING")) + 1);
> strcpy(line_buffer, getenv("QUERY_STRING"));
> 
> at strlen and strcpy when QUERY_STRING is not set .
> Is there a way to handle this? there are a lot of such occurrences.
> 
> Regards,
> Vivek
> 
> 

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