Ondřej Surý 584f0d7a7e Simplify way we tag unreachable code with only ISC_UNREACHABLE() ...

Previously, the unreachable code paths would have to be tagged with:

    INSIST(0);
    ISC_UNREACHABLE();

There was also older parts of the code that used comment annotation:

    /* NOTREACHED */

Unify the handling of unreachable code paths to just use:

    UNREACHABLE();

The UNREACHABLE() macro now asserts when reached and also uses
__builtin_unreachable(); when such builtin is available in the compiler.

2022-03-25 08:33:43 +01:00

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