http://d.puremagic.com/issues/show_bug.cgi?id=10034

           Summary: wWinMain and wmain fail to link
           Product: D
           Version: D2
          Platform: All
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Optlink
        AssignedTo: nobody@puremagic.com
        ReportedBy: diggsey@googlemail.com


--- Comment #0 from Diggory <diggsey@googlemail.com> 2013-05-05 13:44:50 PDT ---
Fairly self explanatory, unicode versions of WinMain and main cause a bunch of undefined symbol errors such as:

Error 42: Symbol Undefined _D15TypeInfo_Struct6__vtblZ

Followed by the message:

OPTLINK : Warning 134: No Start Address

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Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

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--- Comment #1 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-05-05 13:55:40 PDT ---
Unicode version, what do you mean? AFAIK there's only one possible win main function called WinMain.

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--- Comment #2 from Diggory <diggsey@googlemail.com> 2013-05-05 14:12:24 PDT ---
Windows also supports "wmain" and "wWinMain" which are wide character versions of "main" and "WinMain".

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Simen Kjaeraas <simen.kjaras@gmail.com> changed:

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--- Comment #3 from Simen Kjaeraas <simen.kjaras@gmail.com> 2013-05-05 15:33:02 PDT ---
Windows supports neither WinMain nor wWinMain. Windows supports a starting address. MSVC, on the other hand, supports both WinMain and wWinMain. According to documentation, WinMain is the official entry point, and wWinMain is magical, in that it creates a thunk that calls GetCommandLineW and passes that to wWinMain.

DMD would thus be free to call its Unicode version of WinMain wWinMain, WinSecondary, foo, or anything else (same goes for the ANSI version). It could even (gasp!) call it WinMain, and create a thunk if the parameters indicate it should be using Unicode.

See remarks here: http://msdn.microsoft.com/en-us/library/ms633559.aspx

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