GHC (4.08, 4.09) rejects `as' as a qualified identifier. The cause appears to be that Lex.lhs:haskellKeywordsFM has two too many entries. In particular `as' and `hiding' shouldn't be there - both are specialids, not reserved ids (see section 2.4 of the Haskell98 report).
I'm puzzled why `as' is not also rejected when it is unqualified, because haskellKeywordsFM seems to also be used to filter out unqualified ids. I sense the possibility of magic, so I hesitate to commit what seems to be the obvious fix (remove `as' and `hiding' from haskellKeywordsFM).
Trac metadata
| Trac field |
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| Version |
None |
| Type |
Bug |
| TypeOfFailure |
OtherFailure |
| Priority |
normal |
| Resolution |
ResolvedFixed |
| Component |
Compiler (Parser) |
| Test case |
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| Differential revisions |
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| BlockedBy |
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| Related |
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| Blocking |
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| CC |
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| Operating system |
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