Reg seg. violations

["Vivek Katakam" <vivek1717@xxxxxxxxx>]

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