Strange behavior of -ddump-minimal-imports

The following two line module:

import System.Exit
main = undefined >>= undefined

when compiled with ghc -c -ddump-minimal-imports Test.hs produces the following in Main.imports:

import System.Exit ( (>>=), undefined )

Those symbols are not exported by System.Exit.

Trac metadata

Trac field	Value
Version	7.6.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture