The following non-Haskell 98 instance is accepted even
without -fglasgow-exts:
type Foo = Double
instance Bounded Foo
The error message quotes the relevant part of the
Report (The instance type must be of form (T a b c)
where T is not a synonym, and a,b,c are distinct type
variables) and the code expresses this, but it seems
that type synonyms have already been expanded, so only
non-saturated ones are left at this stage.
ross@soi.city.ac.uk
Trac metadata
| Trac field |
Value |
| Version |
None |
| Type |
Bug |
| TypeOfFailure |
OtherFailure |
| Priority |
normal |
| Resolution |
ResolvedFixed |
| Component |
Compiler (Type checker) |
| Test case |
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| Differential revisions |
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| BlockedBy |
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| Related |
|
| Blocking |
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| CC |
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| Operating system |
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| Architecture |
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