[Issue 16479] New: Wrong C++ mangling for template

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16479

          Issue ID: 16479
           Summary: Wrong C++ mangling for template
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nob...@puremagic.com
          Reporter: b...@brix-verden.dk

testcase_cpp.cpp:
class StructReader
{
public:
    template <typename T>
    T getDataField(unsigned int offset) const
    {
        return 0;
    }
};

void initializeTemplates()
{
    StructReader reader;
    reader.getDataField<signed char>(0);
}


testcase.d:
extern(C++) class StructReader
{
public:
    byte getDataField(T)(uint offset) const;
}

void main()
{
    new StructReader().getDataField!byte(0);
}

g++ -c testcase_cpp.cpp
dmd testcase.d testcase_cpp.o

testcase.o: In function `_Dmain':
testcase.d:(.text._Dmain+0x20): undefined reference to
`StructReader::getDataField<signed char>::getDataField(unsigned int) const'
collect2: error: ld returned 1 exit status
--- errorlevel 1


D mangles as: _ZNK12StructReader12getDataFieldIaE12getDataFieldEj
Expected C++ symbol: _ZNK12StructReader12getDataFieldIaEET_j

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