Inferred type for hole is not general enough
As noted by @deech in #13050 (closed), inferred types for holes are sometimes not general enough. Example:
Prelude> :set -XNoMonomorphismRestriction -- added this just to make sure
Prelude> :t _ 1 2
<interactive>:1:1: error:
• Found hole: _ :: Integer -> Integer -> t
Where: ‘t’ is a rigid type variable bound by
the inferred type of it :: t at <interactive>:1:1
• In the expression: _
In the expression: _ 1 2
A more general type would be (Num a, Num b) => a -> b -> t
.
Trac metadata
Trac field | Value |
---|---|
Version | 8.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |