4105 – Stack overflow involving alias template parameters and undefined identifier

template Bug4105a(alias Storage)
{
 enum bool somerubbish = Bug4105b!(Storage).nonexistent;
}
struct Bug4105b(alias Storage){
 enum bool useless = Bug4105a!(Storage).somerubbish;
}
static assert(Bug4105b!(0)().foo);
--------
PATCH: expression.c DotIdExp::semantic line 6055.
 else if (ident == Id::stringof)
 { char *s = ie->toChars();
 e = new StringExp(loc, s, strlen(s), 'c');
 e = e->semantic(sc);
 return e;
 }
 error("undefined identifier %s", toChars());
+ return new ErrorExp();
- type = Type::tvoid;
- return this;
 }

Fixed DMD2.044