TypeApplications obscure "Variable not in scope" error message
Compiling
{-# LANGUAGE TypeApplications #-}
module Foo where
foo = bar @Int
gives
Foo.hs:5:7: error:
• Cannot apply expression of type ‘t1’
to a visible type argument ‘Int’
• In the expression: bar @Int
In an equation for ‘foo’: foo = bar @Int
instead of:
Foo.hs:5:7: error: Variable not in scope: bar
This makes a potential typo appear like a typing error (no pun intended). If we delete @Int
, the second message is given.
Trac metadata
Trac field | Value |
---|---|
Version | 8.6.3 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |