interpret.c assertion failure on enum.stringof mixin

[strtr]

enum { E };
void _mixin() {
        writefln( E.stringof );
}
void func() {
        mixin(_mixin);
}
Assertion failure: '!dim || (parameters && (parameters->dim == dim))' on line 
140 in file 'interpret.c'

At least I got a line number this time :)