id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc
150,PANIC in Type.Location,erikd,,"Code

{{{
a :: Int
a = 0

b :: Int %r0
  :- Mutable %r0
b = 0

main ()
= do	println $ show b
	b := 1
	println $ show b
	a := 1
}}}

Results in a panic:

{{{
ddc: PANIC in Type.Location
    dispSourcePos: no source location in TSI SICrushedF 162 (Base.MutableT *150)
    Please report this bug to the maintainers at:
        http://trac.haskell.org/ddc
        or by emailing disciple-cafe@googlegroups.com
}}}
",defect,closed,blocker,0.1.3,Core Type Checker,0.1.2,fixed,,