Re: [GHC] #6007: ghci: Importing specific non-existent names from a module breaks later imports
#6007: ghci: Importing specific non-existent names from a module breaks later imports ---+ Reporter: josh | Owner: simonmar Type: bug | Status: closed Priority: normal| Milestone: 7.4.2 Component: GHCi |Version: 7.4.1 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase:| Blockedby: Blocking:|Related: ---+ Changes (by pcapriotti): * status: merge = closed * resolution: = fixed Comment: Merged as 81885c1c34af716ed3dad159e927c943270eb74b. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6007#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler ___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #6007: ghci: Importing specific non-existent names from a module breaks later imports
#6007: ghci: Importing specific non-existent names from a module breaks later
imports
-+--
Reporter: josh | Owner: simonmar
Type: bug | Status: new
Priority: normal| Milestone: 7.6.1
Component: GHCi | Version: 7.4.1
Keywords:| Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown |Testcase:
Blockedby:|Blocking:
Related:|
-+--
Comment(by marlowsd@…):
commit b6e28266cf29bfdf07fe08e894df77b400da8a04
{{{
Author: Simon Marlow marlo...@gmail.com
Date: Fri Apr 27 13:07:50 2012 +0100
Catch illegal imports earlier (#6007)
ghc/InteractiveUI.hs | 44 +++-
1 files changed, 39 insertions(+), 5 deletions(-)
}}}
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6007#comment:2
GHC http://www.haskell.org/ghc/
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Re: [GHC] #6007: ghci: Importing specific non-existent names from a module breaks later imports
#6007: ghci: Importing specific non-existent names from a module breaks later imports -+-- Reporter: josh | Owner: simonmar Type: bug | Status: merge Priority: normal| Milestone: 7.4.2 Component: GHCi | Version: 7.4.1 Keywords:| Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown |Testcase: Blockedby:|Blocking: Related:| -+-- Changes (by simonmar): * status: new = merge * milestone: 7.6.1 = 7.4.2 -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6007#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler ___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #6007: ghci: Importing specific non-existent names from a module breaks later imports
#6007: ghci: Importing specific non-existent names from a module breaks later
imports
-+--
Reporter: josh | Owner: simonmar
Type: bug | Status: new
Priority: normal| Milestone: 7.6.1
Component: GHCi | Version: 7.4.1
Keywords:| Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown |Testcase:
Blockedby:|Blocking:
Related:|
-+--
Changes (by simonmar):
* owner: = simonmar
* difficulty: = Unknown
* component: Compiler = GHCi
* milestone: = 7.6.1
Comment:
Yes, this is a bit unfortunate. You can see what happens with `:show
imports`:
{{{
Prelude import System.IO(foo)
interactive:1:18: Module `System.IO' does not export `foo'
Prelude :show imports
import Prelude -- implicit
import System.IO ( foo )
Prelude
}}}
The import is remembered by GHCi and replayed every time the set of
imports changes. We do catch obvious problems such as when the module
does not exist, but not deeper errors like this.
You can recover with `:module -System.IO`:
{{{
Prelude :module -System.IO
Prelude :show imports
import Prelude -- implicit
Prelude
}}}
I shall look into how to fix this, but I think it needs a significant
restructuring.
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6007#comment:1
GHC http://www.haskell.org/ghc/
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[GHC] #6007: ghci: Importing specific non-existent names from a module breaks later imports
#6007: ghci: Importing specific non-existent names from a module breaks later
imports
--+-
Reporter: josh | Owner:
Type: bug | Status: new
Priority: normal| Component: Compiler
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby:| Blocking:
Related:|
--+-
At the ghci prompt, attempting to import specific non-existent names from
a module breaks any future import attempts, causing them to fail with the
same error message that the original import failed with (in addition to
any error message they generate themselves). For example:
{{{
Prelude import System.IO(foo)
interactive:1:18: Module `System.IO' does not export `foo'
Prelude import Control.Monad.Error
interactive:1:18: Module `System.IO' does not export `foo'
}}}
Or compounding the problem:
{{{
Prelude import System.IO(foo)
interactive:1:18: Module `System.IO' does not export `foo'
Prelude import Control.Monad.Error(foo)
interactive:1:18: Module `System.IO' does not export `foo'
interactive:1:28:
Module `Control.Monad.Error' does not export `foo'
Prelude import Control.Monad.Error
interactive:1:18: Module `System.IO' does not export `foo'
}}}
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6007
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler
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