[Bug 55856] New: cgwin hangs during installation at libzstd1-1.5.5-1

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55856

Bug ID: 55856
           Summary: cgwin hangs during installation at libzstd1-1.5.5-1
           Product: Wine
           Version: 8.19
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When installing libzstd1-1.5.5-1 (/usr/bin/cygzstd-1.dll) it hangs, using one
full CPU core constantly.
The UI is still responsive and the installation can be cancelled, but it
doesn't progress.

This is not a regression in Wine, I used 5.0 and the error still occurs.

Download at https://www.cygwin.com/setup-x86_64.exe

Making feof always return 0 makes cygwin continue.