🚀 go-pugleaf

In  <1992Sep25.073705.18715@mynet.no>  ivarh@mynet.no (Ivar E. Hosteng) writes:
> I have found a nasty bug in the OS/2 kernal. If you use alloca to
> allocate large amounts of stack space the hole system crashes. I know
> the stack spaec for the first thread is fixed, but a stack overrun
> should not crash the whole system system. The strange thing is that
> this is only happening on ISA machines and not every thime there
> either. But in every case the error screen that pops up is serverly
> disorted. At the bottom where you are given the choice to aboty the
> program or to get help only horizontal lines are displayed. This
> happens if the system doesent crash completly with an internal error.
>
> Try compiling the following program with gcc: (bevare, executing this
> program migth crash your system.)
>
> #include <stdio.h>
> #include <stdlib.h>
>
> int main()
> {
>         void *foo;
>
>         foo= alloca(10240000);
>
>         printf("foo is now 0x%x\n",foo);
>         return 0;
> }
>
> BTW: Do not increase the stac size when compiling this program.
> Atleast not if you want it to chrash the system.
>
>
> --
> Name:    Ivar E. Hosteng. Phone:   +47 2 68 11 50 ext 278
> Address: Mynet A/S. Ensjoveien 20 PBox 6199 Etterstad, 0602 OSLO 6 Norway
> email:   ivarh@mynet.no
> My opinions are my own and not necessarily shared by my employer.

When I do this with IBM C Set/2 compiler, I get an error stating that I'm
out of stack, and my machine stays running.  I guess C Set/2 has an
exception handler that catches this...

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