[Linux-ia64] Re: malloc problems

[Linux-ia64] Re: malloc problems

[Bill Nottingham]

Donny Cooper (dcooper@hstc.necsyl.com) said: 
> dynamic_area = (unsigned char *) malloc ( membytes );
> printf(" dyn_area = %x %lx, mem= %x \n",dynamic_area,dynamic_area,membytes);
> 
> Result from Tom: (1-way BigSur)
> dyn_area = 40000010 40000010, mem= 2000018

It looks like you forgot a prototype for malloc.

Bill

RE: [Linux-ia64] Re: malloc problems

[Donny Cooper]

Bill,

This code is a small subset of a very large application, that runs on many
platforms, an is being ported and tuned for IA64 Linux.
The executable builds and runs fine, but always grabs a different memory
area on the one BigSur, as opposed to the others.

Thanks.

Donny

-----Original Message-----
From: linux-ia64-admin@linuxia64.org
[mailto:linux-ia64-admin@linuxia64.org]On Behalf Of Bill Nottingham
Sent: Thursday, April 26, 2001 10:03 AM
To: !IA64-Dist-Linuxia64 (E-mail)
Subject: [Linux-ia64] Re: malloc problems


Donny Cooper (dcooper@hstc.necsyl.com) said:
> dynamic_area = (unsigned char *) malloc ( membytes );
> printf(" dyn_area = %x %lx, mem= %x
\n",dynamic_area,dynamic_area,membytes);
>
> Result from Tom: (1-way BigSur)
> dyn_area = 40000010 40000010, mem= 2000018

It looks like you forgot a prototype for malloc.

Bill

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RE: [Linux-ia64] Re: malloc problems

[David Mosberger]

>>>>> On Thu, 26 Apr 2001 11:41:37 -0500, "Donny Cooper" <dcooper@hstc.necsyl.com> said:

  Donny> Bill, This code is a small subset of a very large
  Donny> application, that runs on many platforms, an is being ported
  Donny> and tuned for IA64 Linux.  The executable builds and runs
  Donny> fine, but always grabs a different memory area on the one
  Donny> BigSur, as opposed to the others.

You didn't include a complete test case, so you shouldn't be surprised
if you're sending people off to a wild goose chase.  As Bill said, the
code you quoted is indeed incorrect as it shows no declaration of
malloc(), nor does it include <stdlib.h>.

Since you say your code works fine, let's assume that malloc() does
get declared *somewhere*.  Based on the addresses you quote:

	Result from Tom: (1-way BigSur)
	dyn_area = 40000010 40000010, mem= 2000018

	Result from Dick & Harry:(2-way BigSur & 4-way Lion)
	dyn_area = 10 2000000000000010, mem= 2000018

I'd say that the binary on "Tom" is an IA-32 binary.  Please use
"file" to verify and let us know (if it's not an IA-32 binary, then a
kernel bug would be the next candidate).

For example, if I compile the attached test program once for IA-32
(t.x86) and once for IA-64 (t.ia64), I get:

	$ ./t.x86
	0x40134008
	$ ./t.ia64 
	0x20000000002a0010

Hope this helps,

	--david

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

int main (int argc, char **argv) {
        return printf ("%p\n", malloc(2000018));
}