[Bug 206664] lang/ruby21: miniruby gets bus error on arm that requires alignment (SCTLR bit[1]==1); build fails

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206664

--- Comment #4 from Mark Millard <markmi at dsl-only.net> ---
(In reply to Mark Millard from comment #0 and #3)

I have verified that for the RPI2B context using gcc5 as the compiler allows
miniruby to run. So, again, a clang vs. gcc distinction.

Using a RPI2 clang 3.8.0 (from a projects/clang380-import context) produces the
same warnings as via the powerpc64 clang 3.7.1, including the ones about
undefined behavior. So gcc vs. clang may handle shifting negative values
differently in some contexts (since there is no language definition of the
result).

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