New subject: [Bug 43455] Jack's Attic fails to launch due to lack of virtual memory

29 Jul 2017


      https://bugs.winehq.org/show_bug.cgi?id=43455
Bug ID: 43455
           Summary: Jack's Attic fails to launch due to lack of virtual
                    memory
           Product: Wine
           Version: 2.0-rc2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel32
          Assignee: wine-bugs@winehq.org
          Reporter: z.figura12@gmail.com
      Distribution: ---
Jack's Attic, an old educational game, fails to launch due to a claimed lack of
virtual memory.
The application calls GlobalMemoryStatus, and adds together the reported values
for TotalPageFile and TotalVirtual, then does a signed comparison with 3MB.
However, GlobalMemoryStatus contains code to limit the total virtual memory to
0x7ffdffff, and also contains code to limit the total paged memory to
0x7fffffff *if* the application is detected to be an old binary (just by
comparing version numbers). These, added together, yield 0xfffdfffe, which is
negative and so less than 3MB.
The game works fine on Windows, because the reported virtual memory isn't
limited (and so the addition wraps around and remains positive). This is
Wine-specific code which is included to help other applications work where they
wouldn't on Windows. Unfortunately, it causes this application to fail.
Perhaps a better solution would be to use a registry key?
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[Bug 43455] New: Jack' s Attic fails to launch due to lack of virtual memory