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| author | Vladislav Zavialov <vlad.z.4096@gmail.com> | 2022-11-18 12:53:00 +0300 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2022-11-25 04:39:04 -0500 |
| commit | 13d627bbd0bc3dd30d672de341aa7f471be0aa2c (patch) | |
| tree | 3464a8c6dca4b9bb47db356352d964279eca94fe /testsuite/tests/typecheck/should_fail/T21327.stderr | |
| parent | 1f1b99b86ab2b005604aea08b0614279a8ad1244 (diff) | |
| download | haskell-13d627bbd0bc3dd30d672de341aa7f471be0aa2c.tar.gz | |
Print unticked promoted data constructors (#20531)
Before this patch, GHC unconditionally printed ticks before promoted
data constructors:
ghci> type T = True -- unticked (user-written)
ghci> :kind! T
T :: Bool
= 'True -- ticked (compiler output)
After this patch, GHC prints ticks only when necessary:
ghci> type F = False -- unticked (user-written)
ghci> :kind! F
F :: Bool
= False -- unticked (compiler output)
ghci> data False -- introduce ambiguity
ghci> :kind! F
F :: Bool
= 'False -- ticked by necessity (compiler output)
The old behavior can be enabled by -fprint-redundant-promotion-ticks.
Summary of changes:
* Rename PrintUnqualified to NamePprCtx
* Add QueryPromotionTick to it
* Consult the GlobalRdrEnv to decide whether to print a tick (see mkPromTick)
* Introduce -fprint-redundant-promotion-ticks
Co-authored-by: Artyom Kuznetsov <hi@wzrd.ht>
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/T21327.stderr')
| -rw-r--r-- | testsuite/tests/typecheck/should_fail/T21327.stderr | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/testsuite/tests/typecheck/should_fail/T21327.stderr b/testsuite/tests/typecheck/should_fail/T21327.stderr index 98ea237018..1a82cd95f3 100644 --- a/testsuite/tests/typecheck/should_fail/T21327.stderr +++ b/testsuite/tests/typecheck/should_fail/T21327.stderr @@ -3,6 +3,6 @@ T21327.hs:7:11: error: [GHC-18872] • Couldn't match a lifted type with an unlifted type When matching types t0 :: * - Int# :: TYPE 'IntRep + Int# :: TYPE IntRep • In the expression: ?p :: Int# In an equation for ‘foo’: foo () = (?p :: Int#) |