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Diffstat (limited to 'testsuite/tests/impredicative/T18126-1.hs')
| -rw-r--r-- | testsuite/tests/impredicative/T18126-1.hs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/testsuite/tests/impredicative/T18126-1.hs b/testsuite/tests/impredicative/T18126-1.hs new file mode 100644 index 0000000000..bbc3a6ec40 --- /dev/null +++ b/testsuite/tests/impredicative/T18126-1.hs @@ -0,0 +1,12 @@ +{-# LANGUAGE ImplicitParams, TypeApplications, ScopedTypeVariables, QuantifiedConstraints, ImpredicativeTypes #-} + +module Foo where + +import Control.Monad +import GHC.Stack + +wcs :: (?callStack :: CallStack) => ( (?callStack :: CallStack) => a ) -> a +wcs x = error "urk" + +info :: IO () +info = wcs $ (when True $ return ()) |