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    SubjectRe: [PATCH][RFC] getting rid of stupid loop in BUG()
    H. Peter Anvin wrote:
    > INT 6 is #UD, so the __builtin_trap() replaces the ud2a as well as the loop.
    >

    __builtin_trap() emits an actual ud2a; the effect is an int 6, of course.

    > How far back was __builtin_trap() supported?

    I think its relatively recent, but it might be within our supported
    compiler window.

    J
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