What to do about default function arguments

[Walter Bright]

On 4/25/2012 8:44 PM, Walter Bright wrote:
> The problem centers around name mangling. If two types mangle the same, then
> they are the same type. But default arguments are not part of the mangled
> string. Hence the schizophrenic behavior.

One might suggest mangling the default argument into the type. But default 
arguments need not be compile time constants - they are evaluated at runtime! 
Hence the unattractive specter of trying to mangle a runtime expression.