Hello,
We have been using Linaro GCC 5.x[1] and valgrind.
When the optimizer is turned on valgrind complains about writes beyond
the current stack pointer. With the optimizer off, the problem report
goes away.
I have my own conclusion about what is going on but I won't bias you
with it. Here a
On Thu, Jun 9, 2016 at 2:22 PM, William Mills wrote:
> When the optimizer is turned on valgrind complains about writes beyond
> the current stack pointer. With the optimizer off, the problem report
> goes away.
> 000102f8 :
>102f8: e351cmp r0, #1
>102fc: da000
This looks like a valgrind bug to me.
I can reproduce the problem with this simple program, which shows the
issue at any optimisation level.
int main ()
{
asm volatile ("" : : : "r4", "r5");
return 0;
}
[on my raspberry pi, with the system gcc]
$ gcc test.c -mtune=cortex-a15 -marm
$ valgrind .
