[Issue 985] New: dll-imported functions return values broken

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=985

           Summary: dll-imported functions return values broken
           Product: D
           Version: 1.006
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: dbugz at mailinator.com


Values retrieved from dll function calls by return, seems to be random garbage. 

I have set up extremely simple test case reproducing misbehavior:

0. Extract attached archive to project directory.
1. Compile visualstudio project.
2. Copy dll and lib to projects folder.
3. Run `coffimplib.exe -f dlltest.lib`.
4. Run `make_d.cmd` to compile D test program.

Run test.exe to see if output is, or is not expected:
"dlltest.get_test():123"


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