Re: malloc

[Jeff Johnston <jjohnstn at redhat dot com>]

Artem B. Bityuckiy wrote:
> Sergei Organov wrote:
>
> > "Artem B. Bityuckiy" <abityuckiy@yandex.ru> writes:
> >
> >
> > > Hello.
> > >
> > > Can anybody give me a hint how to get Heap size *when using Newlib*. 
> > > There is
> > > no such POSIX call. I need some hack to be shure that my program 
> > > doesn't eat
> > > memory.
> >
> >
> >
> > I guess malloc_stats()/mallinfo() could help.
> Thanks!
> I receive:
>
> newlib/libc/stdlib/mstats.c:117: undefined reference to `_malloc_stats_r'
> newlib/libc/stdlib/mstats.c:145: undefined reference to `_malloc_stats_r'
>
> It seems _malloc_stats_r should be provided by system. But I use pure 
> arm-elf-gdb's simulator. Is there some way to provide _malloc_stats_r 
> when using simulator with no any underlying OS?
>
> Are there any other approaches to get Heap size exist?

This is a bug.  There is mallstatsr object that should have been built in stdlib 
which contains the function in question.  I have just checked in a patch to 
libc/stdlib/Makefile.am that fixes this.

-- Jeff J.