Compiler/TMS320C6672: Optimizer terminated abnormally

Tool/software: TI C/C++ Compiler

Hi,

I get an internal compiler error while trying to compile the following code:

struct bitfield
{
    bitfield(unsigned = 0)
    {
        *((volatile unsigned*)&_raw) = *((volatile unsigned*)&_raw);
    }

    operator unsigned() const
    {
        return *((volatile unsigned*)&_raw);
    }

    unsigned _raw;
};

bitfield error_msi_not_acknowledged;

void msi_send()
{
    error_msi_not_acknowledged = bitfield(bitfield(0));
}

while using the following command line:

F:/Packages/TI_8.1.0/CodeComposerStudio/ccsv8/tools/compiler/ti-cgt-c6000_8.3.0/bin/cl6x.exe "C:\Users\[...]\Desktop\CompilerError.cpp" -O2

I have not tried version 8.3.1 of the compiler. Workaround for me was to not execute the strange sequence of constructors and cast operators. I have also found that replacing *((volatile unsigned*)&_raw) with ((volatile unsigned&)_raw) no longer produces optimizer crashes, but tends to generate infinite loops when packed into a tight loop where the boundary depends on the cast operator, but maybe my understanding of my the code is lacking there.

Regards,
Lukas