diff options
Diffstat (limited to 'testsuite/tests')
| -rw-r--r-- | testsuite/tests/profiling/should_run/T17572.hs | 16 | ||||
| -rw-r--r-- | testsuite/tests/profiling/should_run/T17572.stdout | 1 | ||||
| -rw-r--r-- | testsuite/tests/profiling/should_run/all.T | 2 |
3 files changed, 19 insertions, 0 deletions
diff --git a/testsuite/tests/profiling/should_run/T17572.hs b/testsuite/tests/profiling/should_run/T17572.hs new file mode 100644 index 0000000000..8c36b4cefb --- /dev/null +++ b/testsuite/tests/profiling/should_run/T17572.hs @@ -0,0 +1,16 @@ +{-# LANGUAGE UnboxedTuples, MagicHash, BlockArguments #-} + +import GHC.Exts +import GHC.Types + +doSomething :: Word -> IO Word +doSomething (W# x) = IO \s -> + case newByteArray# 7096# s of -- we need a large ByteArray# + (# s, mba #) -> case shrinkMutableByteArray# mba 7020# s of -- shrunk + s -> case unsafeFreezeByteArray# mba s of + (# s, ba #) -> (# s, W# (indexWordArray# ba 18#) #) + +main :: IO () +main = do + xs <- mapM doSomething [0..300000] -- we need enough elements (to trigger a GC maybe?) + print (length xs) diff --git a/testsuite/tests/profiling/should_run/T17572.stdout b/testsuite/tests/profiling/should_run/T17572.stdout new file mode 100644 index 0000000000..7b1239c6a5 --- /dev/null +++ b/testsuite/tests/profiling/should_run/T17572.stdout @@ -0,0 +1 @@ +300001 diff --git a/testsuite/tests/profiling/should_run/all.T b/testsuite/tests/profiling/should_run/all.T index b711055667..fe98517d96 100644 --- a/testsuite/tests/profiling/should_run/all.T +++ b/testsuite/tests/profiling/should_run/all.T @@ -149,3 +149,5 @@ test('T15897', run_timeout_multiplier(2), fragile(15467)], makefile_test, ['T15897']) + +test('T17572', [], compile_and_run, ['']) |