.boot modules interact badly with the ghci debugger

If a boot module is loaded after its normal counterpart, which can happen, the module ends up with empty modBreaks info, which leads to errors while debugging. It looks like boot modules take the place of their normal counterparts in the HomePackageTable perhaps? An example:

GHCi, version 6.7.20070826: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude> :l C
[1 of 4] Compiling B[boot]          ( B.hs-boot, interpreted )
[2 of 4] Compiling A                ( A.hs, interpreted )
[3 of 4] Compiling B                ( B.hs, interpreted )
[4 of 4] Compiling C                ( C.hs, interpreted )
Ok, modules loaded: B, B, C, A.
*C> :! touch A.hs
*C> :r
[1 of 4] Compiling B[boot]          ( B.hs-boot, interpreted )
[2 of 4] Compiling A                ( A.hs, interpreted )
Ok, modules loaded: B, B, C, A.
*C> :break a
Breakpoint 0 activated at A.hs:4:0-8
*C> a ()
Stopped at A.hs:4:0-8
_result :: a = _
3  
4  a x = b x
[A.hs:4:0-8] *C> :st
Stopped at A.hs:4:6-8
_result :: () = _
x :: () = ()
3  
4  a x = b x
[A.hs:4:6-8] *C> :st  
*** Exception: Error in array index

Trac metadata

Trac field	Value
Version	6.7
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	mnislaih@gmail.com
Operating system	Unknown
Architecture	Unknown