fixST for lazy ST is a bit wrong
#15349 (closed) exposed a problem with repeated computations in invocations of fixST
that should fail but can instead produce answers or even subvert safe Haskell. That has been fixed for strict ST
, but not yet for lazy ST
.
Trac metadata
Trac field | Value |
---|---|
Version | 8.4.3 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Core Libraries |
Test case | |
Differential revisions | |
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Blocking | |
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Operating system | |
Architecture |