I suspect the right solution is to fix the approach taken in Mesa to
detecting Mir:
All the above modules should be loaded with RTLD_LOCAL. As far as I can
tell they are so they shouldn't interact.
However, Mir's mesa.so.X client platform module reloads itself with
RTLD_GLOBAL so that Mesa can find a Mir entry point. (Yes, this is an
ugly hack.)
That is likely what causes symbols to be resolved from the wrong
protobuf library and the problems seen here.
** Also affects: mesa
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1535297
Title:
Unity8 crashes on logout with "Error in `unity8': double free or
corruption" called from libprotobuf.so.9, called from libprotobuf-
lite.so.9
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