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prevents one from running eg clang built with debug; the new one is arbitrary (equal to MAXDSIZ) and... well, should be quite future-proof. Same fix might be applicable to other 64 bit architectures; I'll ask their respective maintainers to make sure it won't break anything. Reviewed by: kib MFC after: 2 weeks Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D10758