Top-level bang pattern accepted
When I compile/link
{-# LANGUAGE BangPatterns #-}
module Main where
!(Just x) = Nothing
main = putStrLn "hi there!"I get
rae:09:50:49 ~/temp> ghc Bug.hs
[1 of 1] Compiling Main ( Bug.hs, Bug.o )
Linking Bug ...
ld: can't open output file for writing: Bug, errno=21 for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
`gcc' failed in phase `Linker'. (Exit code: 1)This bogus code should be rejected more gracefully (and earlier). It actually also loads into GHCi, but shouldn't.
Will fix while I'm in the area.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |