[Mono-devel-list] Segmentation fault in mono_class_from_name
nazgul at nemerle.org
Wed Jun 23 04:22:54 EDT 2004
I'm trying to hunt a bug in mono runtime, which appeared somewhere befero
Beta1 and lasts till now. I'm having a NullReference when opening Npgsql
connection, but my investigations show, that it is not Npgsql / System.Net
related problem, but some really internal runtime bug.
So what exactly is happening:
return_value = hostent_to_IPHostEntry2(hp1, hp2, h_name, h_aliases,
family_hint = get_family_hint ();
socket_class = mono_class_from_name (system_assembly,
and inside mono_class_from_name, line
nspace_table = g_hash_table_lookup (image->name_cache, name_space);
fails with null reference.
Probably there is some null key inside this name_cache hashtable... Note, that
this bug is triggered only in presence of Nemerle compiler, so it's probably
some System.Reflection.Emit realted issue.
My question is how can I easily assert somewhere that image-> name_cache is
holding valid data?
As I debugged a little bit mono_class_from_name it seems that it is being
called something about 26 times (and succesfully ends each execution) from
inside g_hash_table_lookup (image->name_cache, name_space); but finally
Note, that this is a first time I've ever dig into mono runtime, so I don't
have any knowledge about assumptions and algorithms used there.
(With a little effort you can reproduce this bug installing Nemerle compiler,
where it is always reproducable)
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