ghci says a module wasn't loaded under debugging mode when in fact it was

When loading an empty module like the following:

main = putStr "hola"

ghci will refuse to set a breakpoint saying that the module is not loaded under debugging mode

pepe:~/code/snippets$ ghci -fdebugging main
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 6.7, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... linking ... done.
[1 of 1] Compiling Main             ( main.hs, interpreted )
Ok, modules loaded: Main.
*Main> :break add Main 1
*** Exception: Module main:Main was not loaded under debugging mode. Enable debugging mode and reload it
*Main> 

Trac metadata

Trac field	Value
Version	6.6
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown