#2976: :show bindings give wrong results when a variable was redefined
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Reporter: phercek | Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 6.10.1 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Bindings displayed with '':show bindings'' do not correspond to what can
be observed by printing values explicitly for example by using '':force''.
The differences happen when a variable is redefined.[[BR]]
I saw the bug in 6.10.1, and 6.8.2. Pepe Iborra could reproduce it in
6.8.1 and noticed that it works well in 6.6.
Notice the value and type reported for variable ''test'' after it has been
redefined in this example.
{{{
% ghci
GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Prelude> let test = 0
Prelude> :show bindings
test :: Integer = _
Prelude> :force test
test = 0
Prelude> let test = "zero"
Prelude> :show bindings
test :: Integer = 0
Prelude> :force test
test = ['z','e','r','o']
Prelude> :quit
Leaving GHCi.
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2976>
GHC <http://www.haskell.org/ghc/>
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