glibc backtrace_symbols()

[Badari Pulavarty]

Hi,

I am trying to use glibc backtrace_symbols() to get the call trace.
It is not working as expected. How to get it working ?

Here is the test pgm:
---------------------

#include <execinfo.h>
#include <stdlib.h>
#include <stdio.h>

  /* Obtain a backtrace and print it to stdout. */
  void
  print_trace (void)
  {
    void *array[10];
    size_t size;
    char **strings;
    size_t i;

    size = backtrace (array, 10);
    strings = backtrace_symbols (array, size);

    printf ("Obtained %zd stack frames.\n", size);

    for (i = 0; i < size; i++)
       printf ("%s\n", strings[i]);

    free (strings);
  }

  /* A dummy function to make the backtrace more interesting. */
  void
  dummy_function (void)
  {
    print_trace ();
  }

  int
  main (void)
  {
    dummy_function ();
    return 0;
  }

Here is the output it prints:
-----------------------------

Obtained 5 stack frames.
/tmp/xx3(backtrace_symbols+0x124) [0x8048534]
/tmp/xx3(backtrace_symbols+0x1a7) [0x80485b7]
/tmp/xx3(backtrace_symbols+0x1b7) [0x80485c7]
/lib/i686/libc.so.6(__libc_start_main+0x93) [0x20042507]
/tmp/xx3(backtrace_symbols+0x31) [0x8048441]

I was expecting something like:
-------------------------------

	print_trace+
	dummy_function +
	main +
	...

I am not gettig the function names. How can I get function names ?
I compiled with "-g". I am running RedHat 7.2. 

# gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)

Could you please "cc" me on the reply ?

Thanks
Badari