[commit: ghc] master: Add T7220a.stderr (6265f1c)
git at git.haskell.org
git at git.haskell.org
Fri Nov 21 20:55:42 UTC 2014
Repository : ssh://git@git.haskell.org/ghc
On branch : master
Link : http://ghc.haskell.org/trac/ghc/changeset/6265f1c3162a192220ec03d888e1c1ef686b2732/ghc
>---------------------------------------------------------------
commit 6265f1c3162a192220ec03d888e1c1ef686b2732
Author: Joachim Breitner <mail at joachim-breitner.de>
Date: Fri Nov 21 21:55:37 2014 +0100
Add T7220a.stderr
which presumably was just forgotten when creating the testcase in
commit 7b1a856.
>---------------------------------------------------------------
6265f1c3162a192220ec03d888e1c1ef686b2732
testsuite/tests/typecheck/should_compile/T7220a.stderr | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/testsuite/tests/typecheck/should_compile/T7220a.stderr b/testsuite/tests/typecheck/should_compile/T7220a.stderr
new file mode 100644
index 0000000..4be503d
--- /dev/null
+++ b/testsuite/tests/typecheck/should_compile/T7220a.stderr
@@ -0,0 +1,14 @@
+
+T7220a.hs:17:6:
+ Could not deduce (C a b)
+ from the context (C a0 b, TF b ~ Y)
+ bound by the type signature for f :: (C a0 b, TF b ~ Y) => b
+ at T7220a.hs:17:6-44
+ Possible fix:
+ add (C a b) to the context of
+ the type signature for f :: (C a0 b, TF b ~ Y) => b
+ In the ambiguity check for the type signature for ‘f’:
+ f :: forall a. (forall b. (C a b, TF b ~ Y) => b) -> X
+ To defer the ambiguity check to use sites, enable AllowAmbiguousTypes
+ In the type signature for ‘f’:
+ f :: (forall b. (C a b, TF b ~ Y) => b) -> X
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