[Bug 40583] Wine - mtndew.dll fails to initialize due to memory pointer work

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=40583

Dmitry Timoshkov <dmitry at baikal.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Dmitry Timoshkov <dmitry at baikal.ru> ---
There are several problems with that code.

First it highly depends on the OS and compiler (and is i386 specific).
According to my tests NtCurrentTeb()->ThreadLocalStoragePointer may be not
initialized, or initialized differently depending on whether PE image provides
TLS or not. Currently Wine doesn't initialize TEB TLS pointer at all if there
is no TLS in the loaded PE modules. Next, the code uses pretty convoluted way
of accessing teb->ThreadLocalStoragePointer of the target thread that currently
doesn't work under Wine, basically GetThreadSelectorEntry(context.SegFs) fails
leading to a crash.

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