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D.gnu - [Bug 59] New: X32 - Type *argtypemerge(): Assertion `0' failed

http://bugzilla.gdcproject.org/show_bug.cgi?id=59

             Bug #: 59
           Summary: X32 - Type *argtypemerge(): Assertion `0' failed
    Classification: Unclassified
           Product: GDC
           Version: development
          Platform: x86_64
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gdc
        AssignedTo: ibuclaw gdcproject.org
        ReportedBy: ibuclaw gdcproject.org


Simple test:

---
struct bug
{
   string a;
   string b;
}



Why this fails?

gdc -m32:  size = 16, is64bit = false.  Passed in memory.
gdc -m64:  size = 32, is64bit = true.   Passed in memory.
gdc -mx32: size = 16, is64bit = true.   Tries to pass a pair of 4 byte types in
registers.  This just be instead treated as one 8 byte type (see
TypeDArray::toArgtypes for where this should be handled).

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Jun 02 2013