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[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

Rather than running load_twice on libmirclient.so.* it should be run on
libmirprotobuf.so.* directly. That's the source of the problem and does
crash, but only if you change RTLD_LAZY to RTLD_NOW.

Loading libmirclient.so.* is just an indirect fudge to force it to try
and resolve more symbols, but not necessary if you use RTLD_NOW on
libmirprotobuf.so.* directly.

** Summary changed:

- Loading libmircommon.so twice leads to a segfault in libprotobuf.so
+ Loading libmirclient.so twice leads to a segfault in libmirprotobuf.so

-- 
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Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1391976

Title:
  Loading libmirclient.so twice leads to a segfault in libmirprotobuf.so

Status in Mir:
  Triaged
Status in mir package in Ubuntu:
  Triaged

Bug description:
  Can be reproduced with: load_twice libmircommon.so.1 (or .2)
  For recent versions of mir use: load_twice libmirclient.so.X (currently .8)

  load_twice.c:

  #include <stdio.h>
  #include <dlfcn.h>

  int main(int argc, char** argv)
  {
      void *dl;
      int i;

      for (i = 0; i < 2; i++)
      {
         dl = dlopen (argv[1], RTLD_LAZY);
         printf ("%d open dl: %p\n", i,  dl);
         if (dl)
             dlclose (dl);
      }
  }

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