Re: [PATCH] fixes for building kernel using Intel compiler

[David S. Miller]

   From: Andi Kleen <[e-mail]>
   Date: 19 Oct 2002 02:07:41 +0200
   
   > -/* Enable FXSR and company _before_ testing for FP problems. */
   > -       /*
   > -        * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
   > -        */
   > -       if (offsetof(struct task_struct, thread.i387.fxsave) & 15) {
   > -               extern void __buggy_fxsr_alignment(void);
   > -               __buggy_fxsr_alignment();
   > -       }
   
   Why does that not work? IMHO it is legal ISO-C

Depending upon the compiler to optimize away the non-existent function
reference is not ISO-C :-)  Although the fact the Intel compiler isn't
doing this is amusing.