.const string of a .local string that's been assigned to -> bus error

[hanekomu]

.sub 'bus_error'
    .local string hello
    hello = "'Allo, 'allo, 'allo."
    .const string hello = "Hello, Polly."
    say hello
.end

produces a bus error on parrot 2.5.0-devel, Mac OS X 10.5.8.

Not assigning to the .local hello does not produce the bus error.