[Bug 264979] archivers/c-blosc2: compiler crash on armv7

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264979

--- Comment #11 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Robert Clausecker from comment #10)

Bad combination ( wrong libgcc_s.so.1 ):

# g++11 trivial.cpp
# ldd a.out
a.out:
       libstdc++.so.6 => /usr/local/lib/gcc11/libstdc++.so.6 (0x42600000)
       libm.so.5 => /lib/libm.so.5 (0x40c8a000)
       libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x419b2000)
       libc.so.7 => /lib/libc.so.7 (0x430fe000)

Various type of programs can have crash problems from
such a mix.

Good combination:

# g++11 -Wl,-rpath=/usr/local/lib/gcc11 trivial.cpp
# ldd a.out
a.out:
       libstdc++.so.6 => /usr/local/lib/gcc11/libstdc++.so.6 (0x42400000)
       libm.so.5 => /lib/libm.so.5 (0x409a9000)
       libgcc_s.so.1 => /usr/local/lib/gcc11/libgcc_s.so.1 (0x41072000)
       libc.so.7 => /lib/libc.so.7 (0x43f5a000)

(The examples are from an old bugzilla report's comments.)

I was just curious about what was involved in your failing context
(the port's gcc based build).

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