https://issues.dlang.org/show_bug.cgi?id=12792

          Issue ID: 12792
           Summary: runtime loading D shared library as a standalone (with
                    it's own GC etc)
           Product: D
           Version: unspecified
          Hardware: Other
                OS: Linux
            Status: NEW
          Keywords: dll
          Severity: enhancement
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: code@dawg.eu

Reported by Timothee Cour on the newsgroup. http://forum.dlang.org/post/mailman.322.1393449436.6445.digitalmars-d-learn@puremagic.com

main.d:
call a D shared library via dlopen/dlsym
foo.d:
extern(C) void foo(){
 printf("inside_foo\n"); //ok
 import core.runtime;
 bool ret=Runtime.initialize();//will segfault below with or without that
 assert(ret);//ok
 int[]a;
 a.length=2;//segfault
}


dmd -g -oflibfoo.dylib -shared foo.d
dmd -g -oftest main.d
./test
#Loading shared libraries isn't yet supported on OSX.
#inside_foo
#segfault at first occurence of gc (a.length=2 above)

under lldb:

* thread #1: test D2rt12sections_osx9tlsOffsetFPvZm + 109, stop reason =
EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
   frame #0: test D2rt12sections_osx9tlsOffsetFPvZm + 109
   frame #1:  test __tls_get_addr + 20
   frame #2:  libfoo.dylib _d_arraysetlengthT + 3701

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