From: swarnerx3@acadia.net (Scott Warner) Subject: Re: WARNING: Serious Pentium Bug 9 Nov 1997 05:04:41 -0800 Message-ID: <199711091248.HAA29549.cygnus.gnu-win32@p2.acadia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: As a point of curiosity, what is this program supposed to do? It looks like it is assigning a pointer to function to a character array. Possibly for assember instructions? What is it about the code that crashes a Pentium? > > There is a SERIOUS bug in all pentium CPUs. The following > > code will crash any machine running on a pentium CPU, MMX or no > > MMX, any speed, regardless of OS (crash as in instant seize, hard > > reboot the only cure): > > > > char x [5] = { 0xf0, 0x0f, 0xc7, 0xc8 }; > > > > main () > > { > > void (*f)() = x; > > f(); > > } > > > > This require no special permissions to run, it works fine with > > average-joe-userspace permissions. I have verified this, it works. > > Demand a new CPU from Intel. > > - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".