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Diffstat (limited to 'testsuite/tests/deriving/should_run/drvrun009.hs')
-rw-r--r-- | testsuite/tests/deriving/should_run/drvrun009.hs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_run/drvrun009.hs b/testsuite/tests/deriving/should_run/drvrun009.hs new file mode 100644 index 0000000000..0bd22ab787 --- /dev/null +++ b/testsuite/tests/deriving/should_run/drvrun009.hs @@ -0,0 +1,20 @@ +-- !!! Check the Read instance for Array +-- [Not strictly a 'deriving' issue] + +module Main( main ) where +import Data.Array + +bds :: ((Int,Int),(Int,Int)) +bds = ((1,4),(2,5)) + +type MyArr = Array (Int,Int) Int + +a :: MyArr +a = array bds [ ((i,j), i+j) | (i,j) <- range bds ] + +main = do { putStrLn (show a) ; + let { b :: MyArr ; + b = read (show a) } ; + putStrLn (show b) + } + |