[Bug target/60991] [avr] Stack corruption when using 24-bit integers __int24 or __memx pointers in large stack frame

[senthil_kumar.selvaraj at atmel dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60991

Senthil Kumar Selvaraj <senthil_kumar.selvaraj at atmel dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |senthil_kumar.selvaraj@atme
                   |                            |l.com

--- Comment #2 from Senthil Kumar Selvaraj <senthil_kumar.selvaraj at atmel dot 
com> ---
Here's a simplified dejagnu testcase.

/* { dg-do run } */
/* { dg-options "-O1" } */

/* This testcase (simplified from the original bug report) exposes 
   PR60991. The code generated for writing the __int24 value corrupts
   the frame pointer if the offset is <= 63 + MAX_LD_OFFSET */

#include <stdlib.h>

int main(void)
{
    volatile char junk[62];
    junk[0] = 5;
    volatile __int24 staticConfig = 0;

    if (junk[0] != 5)
      abort();

    exit(0);
    return 0;
}