[Bug 40528] Cygwin installs (with errors) but doesn't work at all

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=40528

--- Comment #5 from Nikolay Sivov <bunglehead at gmail.com> ---
(In reply to Angus Gratton from comment #4)
> Found this issue while trying to run MSYS2 (which uses Cygwin) on
> wine-staging 2.15.
> 
> There's a matching MSYS2 bug here:
> https://github.com/Alexpux/MSYS2-packages/issues/682
> 
> From reading through that, I understand the problem to be:
> - Cygwin 2.6 removed support for Windows XP.
> - That included a patch which removed pre-Vista fallback behaviour for
> computing a FAST_CWD structure[1].
> - On Wine, Cygwin happened to be using that fallback behaviour for FAST_CWD,
> as Cygwin's find_fast_cwd_pointer() seems to always fail[2] under wine.
> 
> So, currently Wine can't run Cygwin 2.6 or newer.
> 
> [1] https://cygwin.com/ml/cygwin-cvs/2016-q2/msg00099.html
> [2]
> https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=blob;f=winsup/
> cygwin/path.cc;h=475c99599a19689bd67f8b81f91ce70f79d7666e;hb=HEAD#l4277

It's not surprising it doesn't work as they are expecting exact opcode sequence
for some ntdll exports. We can't do that, maybe someone interested could
convince them to add back fallback logic if only for Wine.

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.