#5902: Cannot tell from an exception handler whether the exception was
asynchronous
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Reporter: simonmar | Owner: simonmar
Type: bug | Status: new
Priority: high | Milestone: 7.8.1
Component: Compiler | Version: 7.4.1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture: Unknown/Multiple
Type of failure: None/Unknown | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets:
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Changes (by exbb2):
* priority: normal => high
Comment:
If a type-based solution is implemented, I propose for SomeException to be
deprecated and split into SomeSyncException and SomeAsyncException.
Right now, SomeException and lack of discrimination for asynchronous
exceptions pose serious threat to modularity in concurrent applications.
Every innocuous catch or try anywhere at any time in any library can make
a thread unintentionally uncancelable. I had to write patches for three
different libraries because of this recurring problem; what would happen
if my project depended on 50 libraries all throwing and catching
exceptions?
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5902#comment:18>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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