#4245: ghci panic: thread blocked indefinitely in an MVar operation
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Reporter: pturnbull | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.2.1
Component: GHCi | Version: 6.12.3
Keywords: MVar | Testcase:
Blockedby: | Difficulty:
Os: MacOS X | Blocking:
Architecture: x86_64 (amd64) | Failure: GHCi crash
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Changes (by fryguybob):
* cc: fryguybob@… (added)
Comment:
I've experienced the behavior from the last reporter on Windows with
7.0.2. For a while I've tried to get something repeatable to no avail.
When it is happening it seems to happen fairly frequently. Some days I
never run into it. I have never had it happen with HEAD which makes me
suspect that #4531 fixed it. Some things that have triggered it for me:
* Typing `q` instead of `:q` (other things not in scope too).
* Hitting tab then `y` to display all.
* Pasting a long line. When it fails in this case I have been pasting a
`let` expression and initially just an `l` shows. I hit backspace and
paste again then it fails with the full line.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4245#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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