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authorDavid Terei <davidterei@gmail.com>2011-07-20 11:09:03 -0700
committerDavid Terei <davidterei@gmail.com>2011-07-20 11:26:35 -0700
commit16514f272fb42af6e9c7674a9bd6c9dce369231f (patch)
treee4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/typecheck/should_compile/tc129.hs
parentebd422aed41048476aa61dd4c520d43becd78682 (diff)
downloadhaskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/typecheck/should_compile/tc129.hs')
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1 files changed, 18 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc129.hs b/testsuite/tests/typecheck/should_compile/tc129.hs
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+++ b/testsuite/tests/typecheck/should_compile/tc129.hs
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+{-# LANGUAGE ImplicitParams #-}
+
+-- !!! 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 :: Int) => Int
+baz = (?x +1) :: Int
+