On my 64-bit linux box running a 32-bit app I see this:
% cat addr.c
#include <stdio.h>
#include <stdlib.h>
int main() {
int local;
printf("%p %p %p\n", &main, &local, malloc(10));
}
% g++ addr.c -m32 && ./a.out
0x8048414 0xff95481c 0x99de008
%
Stack is at 0xff95481c, so, the app uses the entire 4Gb range.
What can be optimized here?
--kcc
On Tue, Mar 18, 2014 at 3:15 PM, Yuri Gribov <[email protected]> wrote:
> On Tue, Mar 18, 2014 at 1:20 PM, Alexander Potapenko <[email protected]>
> wrote:
> > This sounds feasible.
> > In order to do this we must also shrink the shadow gap so that those 256M
> > can be actually used.
>
> Cool. I see if I can prepare something this week.
>
> -Y
>
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