[Bug 48723] New: Torchlight - Loading times are excessively long

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48723

            Bug ID: 48723
           Summary: Torchlight - Loading times are excessively long
           Product: Wine
           Version: 4.5
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcrt
          Assignee: wine-bugs at winehq.org
          Reporter: vv221+winehq at dotslashplay.it
      Distribution: ---

Created attachment 66598
  --> https://bugs.winehq.org/attachment.cgi?id=66598
revert the faulty commit

This bug has been spotted on version 1.15 of Torchlight, as sold on gog.com.
It has been reproduced reliably on a Debian Sid and an Arch Linux.

The symptoms are:
- the game takes a long time to launch
- switching between characters in the menu takes several seconds
- transition between zones in game takes much longer than it should

The issue is present starting with WINE 4.5, and is still present in latest
release (5.3) and current master (wine-5.3-181-geb63713f60).
WINE 4.4 is the latest non-affected release.

I did a bisect and identified the following commit as the faulty one:
f48ea297268e832c93a22fb5b92f73620c717280
"msvcrt: Use _strnicmp instead of strncasecmp."

The attached patch reverts this commit, it applies cleanly on both 5.3 and
current master, and restore normal loading times in the game.

You can see more information about this issue in the original bug report in the
issues tracker of ./play.it:
https://forge.dotslashplay.it/play.it/games/issues/342

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