[Issue 15080] New: extern(C++) classes have wrong static data layout

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15080

          Issue ID: 15080
           Summary: extern(C++) classes have wrong static data layout
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: C++, wrong-code
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: yebblies at gmail.com

import core.stdc.stdio;

extern(C++) class C
{
    uint x = 1;
    uint y = 2;

    void func() {}
}
extern(C++) class D : C
{
    uint z = 3;

    override void func() {}
}

__gshared D c = new D();

void main()
{
    printf("%u\n", c.x);
    printf("%u\n", c.y);
    printf("%u\n", c.z);
}

The offsets are wrong because dmd assumes there is always a monitor word.

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