unfixed ICE issues

[Stewart Gordon]

Benjamin Shropshire wrote:
> To help avoid duplicate issues, could the assert error messages in DMD 
> be edited to include the issue number of bugs known to trigger them? 
> That would be a little more robust than just line numbers and would also 
> help people find work arounds.

We could use the same thing for forward reference bugs, especially those 
that have "forward reference" in the error message.  Given that the 
presence of such an error message in the compiler code is nearly always 
an indication of a bug.

Stewart.