[project @ 2001-06-25 12:54:59 by simonpj]

Add an implicit-parameter test

1 files changed, 15 insertions, 0 deletions

diff --git a/testsuite/tests/ghc-regress/typecheck/should_compile/tc129.hs b/testsuite/tests/ghc-regress/typecheck/should_compile/tc129.hs
new file mode 100644
index 0000000000..0fb623daaf
--- /dev/null
+++ b/testsuite/tests/ghc-regress/typecheck/should_compile/tc129.hs
@@ -0,0 +1,15 @@
+-- !!! Test inheritance of implicit parameters.
+-- GHC 5.00.2 fails this test
+
+-- The thing is to do with whether an implicit parameter
+-- constraint can be "inherited".  See notes in TcSimplify.lhs
+
+module ShouldCompile where
+
+data R = R {f :: Int}
+
+foo :: (?x :: Int) => R -> R
+foo r = r {f = ?x}
+
+baz = (?x +1) :: Int
+