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Diffstat (limited to 'testsuite/tests/rts/overflow1.hs')
| -rw-r--r-- | testsuite/tests/rts/overflow1.hs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/testsuite/tests/rts/overflow1.hs b/testsuite/tests/rts/overflow1.hs new file mode 100644 index 0000000000..63ed5a4e02 --- /dev/null +++ b/testsuite/tests/rts/overflow1.hs @@ -0,0 +1,11 @@ +module Main where + +import Data.Array.IO +import Data.Word + +-- Try to overflow BLOCK_ROUND_UP in the computation of req_blocks in allocate() +-- Here we invoke allocate() via newByteArray# and the array package. +-- Request a number of bytes close to HS_WORD_MAX, +-- subtracting a few words for overhead in newByteArray#. +-- Allocate Word32s (rather than Word8s) to get around bounds-checking in array. +main = newArray (0,maxBound `div` 4 - 10) 0 :: IO (IOUArray Word Word32) |