[Bug 58000] New: New thread stack uses too much memory

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=58000

Bug ID: 58000
           Summary: New thread stack uses too much memory
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 78261
  --> https://bugs.winehq.org/attachment.cgi?id=78261
simple app that can be used to reproduce the problem

It's a regression caused by 3863b243fe5ef4e223a809e93a85e858952dd754 commit.
Affected application (32-bit) runs on low end machine and creates 128 cores.
Prior to this change it was using ~34MB of memory, in wine 10.0 it uses ~152MB
(every thread uses ~1MB for stack). I've also confirmed that application memory
usage is small on Windows 10.

According to MSDN stack should not use physical memory until it's referenced.