c/4021: warning on valid code

[rayvt@comm.mot.com]

>Number:         4021
>Category:       c
>Synopsis:       warning on valid code
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 14 09:36:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ray Van Tassle
>Release:        3.0
>Organization:
>Environment:

>Description:
/***********  File: gccbug.c ***********/
#include <ctype.h>

void buf_dump()
{
  int  chr_index;
  char print_buf[80];
  char print_byte;

  print_buf[chr_index] = isprint(print_byte) ? print_byte : '.';
}


>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
 >gcc --version
 3.0
 >gcc -Wall gccbug.c -c
 gccbug.c: In function `buf_dump':
 gccbug.c:11: warning: subscript has type `char'