Need help with debugging Segfault

[d coder]

Greetings

I have a code that crashes with current github dmd snapshot with a
segfault. It compiles and runs fine with the released versions of DMD. I am
using lots of structs and classes in the code and I believe the problem
could be related with the other issues that are there with structs. When I
give the compiled binary to valgrind, the report suggests that the segfault
might be related to garbage collector. I wanted to isolate the issue and
report it on bugzilla. Can somebody help me with the valgrind trace below
here, and guide me where to look for the problem? My actual code is
thousands of lines big and I am at a loss as to how I should isolate and
report this issue.

Regards
- Puneet

==4453== Invalid read of size 8
==4453==    at 0x44EFF5: _D4nett5mule5Mule3esl6__dtorMFZv
(../src/nett/mule.d:115)
==4453==    by 0x471124: _D4nett5mule5Mule9EslDomain11__fieldDtorMFZv
(../src/nett/mule.d:7923)
==4453==    by 0x4AD845: rt_finalize2 (in
/home/pgoel/mule/examples/test_code)
==4453==    by 0x4ABC92: _D2gc3gcx3Gcx11fullcollectMFZm (in
/home/pgoel/mule/examples/test_code)
==4453==    by 0x4A9BBA: _D2gc3gcx2GC18fullCollectNoStackMFZv (in
/home/pgoel/mule/examples/test_code)
==4453==    by 0x4A7F2C: gc_term (in /home/pgoel/mule/examples/test_code)
==4453==    by 0x48661B: _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi6runAllMFZv
(in /home/pgoel/mule/examples/test_code)
==4453==    by 0x4860F5:
_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv (in
/home/pgoel/mule/examples/test_code)
==4453==    by 0x4860B1: _d_run_main (in
/home/pgoel/mule/examples/test_code)
==4453==    by 0x485EF2: main (in /home/pgoel/mule/examples/test_code)
==4453==  Address 0x2c0 is not stack'd, malloc'd or (recently) free'd
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