Thursday, February 3, 2011

QtWebkit - CRASH() macro

I have come across interesting code snippet in QtWebkit code base.

#define CRASH() do { \
    *(int *)(uintptr_t)0xbbadbeef = 0; \
    ((void(*)())0)(); /* More reliable, but doesn't say BBADBEEF */ \
} while(false)

The line,


caught my attention. Can you guess what is it doing? Pretty simple,

0 being casted to some type and is 'pointer type. It is of type "pointer to function taking nothing and returning nothing", and the function invoked. Ideally the code invoking function located address 0. I interpret it as power OFF simulation. Isn't it?

It is published on GeeksforGeeks.

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