AC_FUNC_REALLOC causes trouble for compiling C++ on AIX

[Tom Epperly]

address@hidden linux]$ autoconf --version
autoconf (GNU Autoconf) 2.59
Written by David J. MacKenzie and Akim Demaille.

Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
address@hidden linux]$

We use autoconf, automake, autoheader, and libtool for our project, 
http://www.llnl.gov/CASC/components/. AC_FUNC_REALLOC causes the 
following #define in our babel_config.h on AIX:

/* Define to rpl_realloc if the replacement function should be used. */
#ifndef realloc
#define realloc rpl_realloc
#endif

This file get included indirectly when compling a C++ file, and the 
#define causes this error:

newxlC -DHAVE_CONFIG_H -I. 
-I/usr/casc_scratch/babel/cronjobs//babel-20040512/regression/sort/runCxx 
-I../../../runtime/sidl  -I. 
-I/usr/casc_scratch/babel/cronjobs/casc-aix-xlc/make_installcheck/babel/=inst/include 
-I/usr/casc_scratch/babel/cronjobs/casc-aix-xlc/make_installcheck/babel/=inst/include   
-g -qstaticinline -c -o sorttest.o 
/usr/casc_scratch/babel/cronjobs//babel-20040512/regression/sort/runCxx/sorttest.cc
"/usr/local/tools/xlc/xlc6006/vacpp/include/cstdlib", line 52.36: 
1540-0130 (S) "::rpl_realloc" is not declared.
gmake[4]: *** [sorttest.o] Error 1
gmake[4]: Leaving directory 
`/usr/casc_scratch/babel/cronjobs/casc-aix-xlc/make_installcheck/babel/regression/sort/runCxx'

In <cstdlib>, it refers to ::realloc, and it gets expanded by the 
preprocessor to ::rpl_realloc which isn't declared.

Regards,

Tom Epperly