[Bug 31191] New: All 'Sona Hanabira ni Kuchizuke wo' games fail to start because of wine buggy string compare implementation.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=31191

             Bug #: 31191
           Summary: All 'Sona Hanabira ni Kuchizuke wo' games fail to
                    start because of wine buggy string compare
                    implementation.
           Product: Wine
           Version: 1.5.8
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel32
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: ntrrgc at gmail.com
    Classification: Unclassified


The engine of Sona Hanabira (among other many games) does use indexed container
files for retrieving game resources.

Having a key of type string, it performs binary search within the index to find
the resource pointers.

But, because of buggy string compare APIs implementation in wine (mainly
StringCompare and StringCompareEx, which are called by lstrcmp and lstrcmpi),
comparison returns wrong values, and the seek fail.

At the moment, wine is just comparing DUCET values of each character (which is
wrong in very many cases), and ignoring several possibilities of StringCompare
API (like IGNORE_KANATYPE, i.e.). Some of them may apply to this bug, some may
not. Anyway, it is broken.

For Sona Hanabira games, a workaround is to use this patcher which reorder
index entries in the way Wine currently (wrongly) look for them:
http://vn.i-forge.net/tools/#sono+hanabira+ni+kuchizuke+wo±+linux+wine+fix

This bug report is to (hopefully) avoid the need of that patch in the future.

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