[commit: testsuite] master: Test Trac #8577 (3e66489)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/testsuite

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/3e66489ebcef0f4cd86968c6781a1d4ad1981f94/testsuite

>---------------------------------------------------------------

commit 3e66489ebcef0f4cd86968c6781a1d4ad1981f94
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Thu Dec 5 08:34:22 2013 +0000

    Test Trac #8577


>---------------------------------------------------------------

3e66489ebcef0f4cd86968c6781a1d4ad1981f94
 tests/th/T8577.hs     |   10 ++++++++++
 tests/th/T8577.stderr |    7 +++++++
 tests/th/T8577a.hs    |   11 +++++++++++
 tests/th/all.T        |    4 ++++
 4 files changed, 32 insertions(+)

diff --git a/tests/th/T8577.hs b/tests/th/T8577.hs
new file mode 100644
index 0000000..8a467e4
--- /dev/null
+++ b/tests/th/T8577.hs
@@ -0,0 +1,10 @@
+{-# LANGUAGE TemplateHaskell #-}
+module T8577 where
+
+import Language.Haskell.TH
+
+import T8577a
+
+foo2 :: A Bool
+foo2 = $$(y)
+
diff --git a/tests/th/T8577.stderr b/tests/th/T8577.stderr
new file mode 100644
index 0000000..6e35e4a
--- /dev/null
+++ b/tests/th/T8577.stderr
@@ -0,0 +1,7 @@
+
+T8577.hs:9:11:
+    Couldn't match type ‛Int’ with ‛Bool’
+    Expected type: Q (TExp (A Bool))
+      Actual type: Q (TExp (A Int))
+    In the expression: y
+    In the Template Haskell splice $$y
diff --git a/tests/th/T8577a.hs b/tests/th/T8577a.hs
new file mode 100644
index 0000000..807350c
--- /dev/null
+++ b/tests/th/T8577a.hs
@@ -0,0 +1,11 @@
+{-# LANGUAGE TemplateHaskell #-}
+module T8577a where
+import Language.Haskell.TH
+
+data A a = A
+
+x :: Q (TExp (A a))
+x = [|| A ||]
+
+y :: Q (TExp (A Int))
+y = x
diff --git a/tests/th/all.T b/tests/th/all.T
index a1fd6bf..05d5d90 100644
--- a/tests/th/all.T
+++ b/tests/th/all.T
@@ -311,3 +311,7 @@ test('T8540',
      extra_clean(['T8540a.hi', 'T8540a.o']),
      multimod_compile,
      ['T8540', '-v0 ' + config.ghc_th_way_flags])
+test('T8577',
+     extra_clean(['T8577a.hi', 'T8577a.o']),
+     multimod_compile_fail,
+     ['T8577', '-v0 ' + config.ghc_th_way_flags])