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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041111 Firefox/1.0

Description of problem:
Can't see macro info from gdb even when compiling with -gdwarf-2 -g3 flags

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Implemented the example from http://sources.redhat.com/gdb/current/onlinedocs/gdb_10.html
2.
3.
  

Actual Results:  gdb responds with:
The symbol `ADD' has no definition as a C/C++ preprocessor macro
at /usr/include/stdio.h:-1

Expected Results:  gdb to respond with something like:
Defined at /tmp/sample.c:5

Additional info:

In case the above mention website is retired before this bug, here's how to reproduce the problem:

$ cat sample.c
#include <stdio.h>
#include "sample.h"

#define M 42
#define ADD(x) (M + x)

main ()
{
#define N 28
  printf ("Hello, world!\n");
#undef N
  printf ("We're so creative.\n");
#define N 1729
  printf ("Goodbye, world!\n");
}
$ cat sample.h
#define Q <
$ gcc -gdwarf-2 -g3 sample.c -o sample
$ gdb -nw sample
GNU gdb Red Hat Linux (6.1post-1.20040607.43rh)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db 
library "/lib/tls/libthread_db.so.1".

(gdb) list main
3
4       #define M 42
5       #define ADD(x) (M + x)
6
7       main ()
8       {
9       #define N 28
10        printf ("Hello, world!\n");
11      #undef N
12        printf ("We're so creative.\n");
(gdb) info macro ADD
The symbol `ADD' has no definition as a C/C++ preprocessor macro
at /usr/include/stdio.h:-1