#5396: rare segfault in a terminal game
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Reporter: MikolajKonarski | Owner:
Type: bug | Status: new
Priority: normal | Component: libraries/base
Version: 7.3 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: Documentation bug
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Changes (by MikolajKonarski):
* failure: Runtime crash => Documentation bug
* component: Compiler => libraries/base
Comment:
OK, so I'm now as certain, as a newbie debugging an indeterministic
segfault can be, about where the bug is. The comment for
http://hackage.haskell.org/packages/archive/base/4.4.0.0/doc/html/src/Foreign-C-String.html#withCWStringLen
is wrong, it should start with
-- | Marshal a Haskell string into a C wide string
-- in temporary storage, with explicit length information.
The rest of the comment is OK and the code agrees with the other comments
(for the CWStringLen type, etc.). This means the vty code, which seems to
be based on the wrong comment, is wrong. I've already submitted a pull
request for vty.
If the segfault ever returns, I will let you know.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5396#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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