Re: [MiNT] Signal on Memory volation

["Helmut Karlowski" <helmut.karlowski@ish.de>]

Am 14.09.2014, 18:47 Uhr, schrieb OL:

> I have look a bit in Mint source code.
>
> I not understand all but it look that form_alert() not come from  
> mintsetter but from mint itself in the function report_buserr()
>
> My problem is if there is this error, the program is not killed but look  
> frozen, system still work, but if I want kill this program, the whole  
> system freeze.


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

void *sigh( int sig )
{
  printf( "signal %d\n", sig );
  exit(1);
}
int main(void)
{
  long *x = 0xff0033;
  int sig;
  for( sig = 0; sig < 31; sig++ )
    signal( sig, (__Sigfunc)sigh );
  *x = 4;
  return 0;
}

I get:

signal 10

Which would be a bus-error ...

Without the handler it is a memory-violation:

19:54:27: PROCESS "memv" KILLED: MEMORY VIOLATION. (PID 034) Type:  
hardware PC: 0172214C Addr: 00FF0033 BP: 01722000 OS: 0000004C

In any case the system continues.

I never use mintsetter or anything like that.
It's also possible your program destroyed the system before the  
memory-violation is noticed.

-Helmut