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| author | Richard Eisenberg <eir@cis.upenn.edu> | 2015-12-24 14:33:19 -0500 |
|---|---|---|
| committer | Richard Eisenberg <eir@cis.upenn.edu> | 2015-12-24 14:37:39 -0500 |
| commit | 2db18b8135335da2da9918b722699df684097be9 (patch) | |
| tree | 660dd90916aa6568694bbe39cdab83c7af98c5d7 /testsuite/tests/typecheck/should_fail/T3950.stderr | |
| parent | 48db13d279d592ed3044cbaf3513854bcb0d3dce (diff) | |
| download | haskell-2db18b8135335da2da9918b722699df684097be9.tar.gz | |
Visible type application
This re-working of the typechecker algorithm is based on
the paper "Visible type application", by Richard Eisenberg,
Stephanie Weirich, and Hamidhasan Ahmed, to be published at
ESOP'16.
This patch introduces -XTypeApplications, which allows users
to say, for example `id @Int`, which has type `Int -> Int`. See
the changes to the user manual for details.
This patch addresses tickets #10619, #5296, #10589.
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/T3950.stderr')
| -rw-r--r-- | testsuite/tests/typecheck/should_fail/T3950.stderr | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/testsuite/tests/typecheck/should_fail/T3950.stderr b/testsuite/tests/typecheck/should_fail/T3950.stderr index fab70fd01b..ae50a74f3c 100644 --- a/testsuite/tests/typecheck/should_fail/T3950.stderr +++ b/testsuite/tests/typecheck/should_fail/T3950.stderr @@ -1,12 +1,17 @@ -T3950.hs:15:13: error: +T3950.hs:15:8: error: • Couldn't match kind ‘* -> *’ with ‘*’ When matching types w :: (* -> * -> *) -> * Sealed :: (* -> *) -> * - Expected type: w (Id p) - Actual type: Sealed (Id p x0) - • In the first argument of ‘Just’, namely ‘rp'’ - In the expression: Just rp' + Expected type: Maybe (w (Id p)) + Actual type: Maybe (Sealed (Id p x0)) + • In the expression: Just rp' + In an equation for ‘rp’: + rp _ + = Just rp' + where + rp' :: Sealed (Id p x) + rp' = undefined • Relevant bindings include rp :: Bool -> Maybe (w (Id p)) (bound at T3950.hs:15:1) |