Potential bug in jump optimization?

[Zack Weinberg]

<aspiesrule@mcleodusa.net> writes:

> If a move to CR0 which sets the PE bit is executed and GCC's jump optimizer 
> optimizes away the far jump/call that must occur immediately afterwards, the 
> resulting code can and will fail.

Bare-metal code like that belongs in handwritten assembly language
files, not in C inline asm.

This is a special case of the general rule that inline asm statements
cannot change control flow.

zw