[Issue 6121] New: Can't link with DMC C++ generated functions with long arguments

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=6121

           Summary: Can't link with DMC C++ generated functions with long
                    arguments
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrej.mitrovich at gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2011-06-07 11:11:04 PDT ---
foo.d:
extern(C++) void test(int);
void main()
{
    test(1);
}

bar.cpp:
void test(long)
{
};

$ dmc -c -cpp bar.cpp
$ dmd foo.d bar.obj
http://www.digitalmars.com/ctg/optlink.html
foo.obj(foo)
 Error 42: Symbol Undefined ?test@@YAXH at Z (void cdecl test(int ))

Symbol reference in foo.obj (D):
?test@@YAXH at Z
Symbol in bar.obj (CPP):
?test@@YAXJ at Z

According to this page: http://www.digitalmars.com/ctg/ctgMemoryModel.html ,
long in DMC has the same size as int in D. I've tried various other types but
nothing works.

Only if I change bar.cpp's test to:
void test(int){}

then it will compile and link. So how am I supposed to link with C++ functions
that take a long if I can't change them?

Due to this bug I can't link DDMD with the backend of DMD 2.053.

Also, your DMC echoes 8.42n instead of 8.52c, fyi.

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