gdb in realloc(): error: junk pointer, too high to make sense on FreeBSD 5.2+

[Philip M. Gollucci]

Paul Querna wrote:
> Can you try to get this into a simple test case? Calling apr_dso_load twice?
I didn't seem to be able to cause it in a simple case; any great ideas ?

gcc -g -O0 \
	-I/usr/local/software/freebsd-6.1-stable/3.4.4/apr/trunk/include/apr-1 \
	-L/usr/local/software/freebsd-6.1-stable/3.4.4/apr/trunk/lib -l apr-1 \
	gdb.c -o test
./test

pgollucci at home.p6m7g8.net /home/pgollucci 145 0>gdb ./test
GNU gdb 6.1.1 [FreeBSD]
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-marcel-freebsd"...
(gdb) r
Starting program: /usr/home/pgollucci/test
warning: Unable to get location for thread creation breakpoint: generic error
[New LWP 100062]
[New Thread 0x8053000 (LWP 100062)]

Program exited normally.
(gdb)

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Philip M. Gollucci (pgollucci at p6m7g8.com) 323.219.4708
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/* $Id$ */

#include "apr.h"
#include "apr_dso.h"

#include <stdio.h>

int main(int argc, const char * const argv[]) {

  apr_pool_t *cntx;
  apr_status_t stat;
  apr_dso_handle_t *modhandle;
  const char *path = "/lib/libc.so.6";

  apr_app_initialize(&argc, &argv, NULL);

  stat = apr_pool_create(&cntx, NULL);
  if (stat != APR_SUCCESS) {
    fprintf(stderr, "apr_pool_create() failed to create initial context");
    apr_terminate();
    exit(1);
  }

  if (apr_dso_load(&modhandle, path, cntx) != APR_SUCCESS) {
    char my_error[256];
    fprintf(stderr, apr_dso_error(modhandle, my_error, sizeof(my_error)));
  }

  if (apr_dso_load(&modhandle, path, cntx) != APR_SUCCESS) {
    char my_error[256];
    fprintf(stderr, apr_dso_error(modhandle, my_error, sizeof(my_error)));
  }

  apr_terminate();
  exit(0);
}