我发现了这个:

I'm not sure what I did

来自Linux内核源代码:

linux /包括/ asm-i386 / hw_irq。h:

/*
 * subtle. orig_eax is used by the signal code to distinct between
 * system calls and interrupted 'random user-space'. Thus we have
 * to put a negative value into orig_eax here. (the problem is that
 * both system calls and IRQs want to have small integer numbers in
 * orig_eax, and the syscall code has won the optimization conflict ;)
 *
 * Subtle as a pigs ear.  VY
 */

// I don't know why I need this, but it stops the people being upside-down

x = -x;

Exception up = new Exception("Something is really wrong.");
throw up;  //ha ha

“这永远不会发生”。

朋友，这是我的临终遗言……

在js代码中:

// hack for ie browser (assuming that ie is a browser)