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    SubjectRe: [PATCH] ARM: Convert BUG() to use unreachable()
    On Mon, Dec 21, 2009 at 11:30:43AM -0800, Richard Henderson wrote:
    > On 12/17/2009 10:17 AM, Russell King - ARM Linux wrote:
    >> How is "size-optimal trap" defined?
    > E.g. Sparc and MIPS have "tcc" instructions that trap based on the
    > condition codes, and so we eliminate the branch. That's the only
    > optimization we apply with __builtin_trap.
    >> Let me put it another way: I want this function to terminate with an
    >> explicit NULL pointer dereference in every case.
    > Then just use that.

    That's precisely what we have been using for many years.

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