Re: (ITS#9037) observing crash in mdb_cursor_put()

[myk@mykzilla.org]

After stepping through the test program in a debugger, I see that 
mdb_page_search returns MDB_NOTFOUND if mc->mc_db->md_root is P_INVALID 
because the tree is empty. And mdb_cursor_put sets rc to MDB_NO_ROOT if 
mc->mc_db->md_root is P_INVALID.

So that can't be related to the crash, at least not in the instances I'm 
investigating, because insert_key and insert_data (and hence rc) is 
always MDB_NOTFOUND in their minidumps when the crash occurs, which 
can't happen when rc is set to MDB_NO_ROOT.

-myk