Re: [Bug-gnulib] How do malloc.c and realloc.c get used?

[Paul Eggert]

"Gary V.Vaughan" <address@hidden> writes:

> but while adding the xalloc module I noticed something odd: Despite
> the fact the modules/xalloc file declares reliance on both malloc.c
> and realloc.c, there doesn't appear to be anyway rpl_malloc or
> rpl_realloc can be called.

xalloc doesn't depend on malloc.c or realloc.c directly; it depends
on the malloc and realloc modules.  If you include the malloc and
realloc modules, you should get a working program.

> My guess is something like the following is missing?
> 
> malloc.m4 (jm_FUNC_MALLOC):
>    if test X"$ac_cv_func_malloc_0_nonnull" = Xno || test 
> X"$ac_cv_func_malloc_works" = Xno; then
>      gl_PREREQ_MALLOC
>      AC_DEFINE(NEED_RPL_MALLOC, 1,
>          [Define to 1 if system malloc cant handle 0 sized mallocations])
>    fi

It shouldn't be needed, because AC_FUNC_MALLOC does that.
(This changed in Autoconf 2.55; perhaps your Autoconf is old?)