Implicit parameters cause strange behavi
ghc-5.00.1 (with glasgow-exts) compiles the following
program:
> foo :: ((?x :: Int) => b) -> Int -> b
> foo s z = s with ?x = z
> main = foo (print ?x) 42
Running the generated code prints nothing. (No output
is produced
even if we add putStr "Hello world\n" before the call
to foo).Trac metadata
| Trac field | Value |
|---|---|
| Version | 5.0 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | ResolvedFixed |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |