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author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
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committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/stranal/should_run/strun003.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/stranal/should_run/strun003.hs')
-rw-r--r-- | testsuite/tests/stranal/should_run/strun003.hs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/testsuite/tests/stranal/should_run/strun003.hs b/testsuite/tests/stranal/should_run/strun003.hs new file mode 100644 index 0000000000..eaedd59e8c --- /dev/null +++ b/testsuite/tests/stranal/should_run/strun003.hs @@ -0,0 +1,23 @@ +-- This module should run fine with an empty argument list +-- But it won't if the strictness analyser thinks that 'len' is use +-- strictly, which was the case in GHC 6.0 + +-- See the io_hack_reqd in DmdAnal.lhs + +module Main where + +import System.Environment +import System.Exit + +main = do + args <- getArgs + let len = read (head args) :: Int + + (if null args && useLazily len + then putStrLn "ok" >> exitWith ExitSuccess + else return () ) + + print len + +useLazily :: Int -> Bool +useLazily len = ([len,3,4] !! 1) == 3 |