Comment delimiters ignored inside compiler pragma
GHC accepts some pragmas that are not valid comments because of embedded comment delimiters. If the delimiters are hidden inside an embedded comment or string, they are not recognized by the parser, but they should be according to the Haskell report. For example, the following has one opening and three closing comment delimiters, but is accepted by the parser.
{-# RULES
"-}" id 0 = 0
-- -}
#-}Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.10.4 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler (Parser) |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
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| Operating system | |
| Architecture |