I found the bug. The procedure get_path_info is not thread safe, it uses
errno code. Php while compiling with mysql client, wrongly add -lpthread
to is's module info (this library is not nessessary for mysql client).
When I remove the library from the list, all works OK. So, I think that
apache group has the followig to problems to fix:
1. Avoid direct using of errno in get_path_info, and generally speaking,
everywhere. (I bet that the current approuch produce several bugs at
heavy loaded WIN32 servers). In any cases, instead of stat (and other
function) must be used a special API functions, that returns errno and
get it inside a lock block.
2. If a special handler (like server-info) is assigned to the location,
directory walk and file walk should not be called.
