Scoping error in lambda expressions in arrow code
GHC 6.2.2 with the -farrows switch erroneously reports
errors when lambda expressions appear in
commands. The error looks like the following:
Command-bound variable `y' is not in scope here
Reason: it is used in the left argument of (-<)
This will produce the error:
foo = proc x -> arr (\y -> y-1) -< x
This will not produce the error:
bar = (\y -> y-1)
foo = proc x -> arr bar -< x
Email: vnkwjyc02@sneakemail.com
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.2.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | ResolvedFixed |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |