diff options
| author | Andreas Klebinger <klebinger.andreas@gmx.at> | 2021-03-16 11:27:06 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-04-05 20:41:41 -0400 |
| commit | 33b886453d8dbf030998d77aa970c90a27fde19f (patch) | |
| tree | 898a78d67ac8ea50c906133defa2dda2455c77b3 | |
| parent | 2783d4981e4079f87a9d06036ea393949a5580b9 (diff) | |
| download | haskell-33b886453d8dbf030998d77aa970c90a27fde19f.tar.gz | |
Add regression test for T19474.
In version 0.12.2.0 of vector when used with GHC-9.0 we
rebox values from storeable mutable vectors.
This should catch such a change in the future.
| -rw-r--r-- | testsuite/tests/perf/should_run/T19474.hs | 15 | ||||
| -rw-r--r-- | testsuite/tests/perf/should_run/all.T | 4 |
2 files changed, 19 insertions, 0 deletions
diff --git a/testsuite/tests/perf/should_run/T19474.hs b/testsuite/tests/perf/should_run/T19474.hs new file mode 100644 index 0000000000..8379a4debd --- /dev/null +++ b/testsuite/tests/perf/should_run/T19474.hs @@ -0,0 +1,15 @@ +module T19474 where + +import Control.Monad +import qualified Data.Vector.Storable.Mutable as M + +main = do + v <- M.new 1 + forM_ [0..10000] $ \some -> do + addSome v 0 some + M.unsafeRead v 0 >>= print + +addSome :: M.IOVector Int -> Int -> Int -> IO () +addSome m idx some = do + val <- M.unsafeRead m idx + M.unsafeWrite m idx $ val + some diff --git a/testsuite/tests/perf/should_run/all.T b/testsuite/tests/perf/should_run/all.T index d7257472e2..6e603b46f4 100644 --- a/testsuite/tests/perf/should_run/all.T +++ b/testsuite/tests/perf/should_run/all.T @@ -395,3 +395,7 @@ test('T19347', compile_and_run, ['-O']) +test ('T19474', + [ collect_stats('bytes allocated', 5), reqlib('vector') ], + compile_and_run, + ['-v0 -O']) |