GHC 8.2.1 allows bang patterns in let-bindings without -XBangPatterns
Bang patterns occurring in let-bindings are allowed even if -XBangPatterns extension is not enabled.
-- Compile error in 8.0.2
-- Compiles in 8.2.1 and 8.2.2
main = print (let !x = 1 + 2 in x)-- Compile error in all of 8.0.2, 8.2.1, and 8.2.2
main = print (let f !x !y = x + y in f 1 2)Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.2.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
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