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| author | Zubin Duggal <zubin.duggal@gmail.com> | 2023-02-01 12:12:21 +0530 |
|---|---|---|
| committer | Zubin Duggal <zubin.duggal@gmail.com> | 2023-02-07 18:47:09 +0530 |
| commit | 27f154f9c68b2c64107eb64104d9eb92295191c6 (patch) | |
| tree | 1209c23323e386384d7fb1960f755a58f4cfe4f4 | |
| parent | 09224b906659cf67752f943acb18b2373bf2fba1 (diff) | |
| download | haskell-27f154f9c68b2c64107eb64104d9eb92295191c6.tar.gz | |
Document #22255 and #22468 in bugs.rst
| -rw-r--r-- | docs/users_guide/bugs.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/users_guide/bugs.rst b/docs/users_guide/bugs.rst index 2b533fa42f..fde6986577 100644 --- a/docs/users_guide/bugs.rst +++ b/docs/users_guide/bugs.rst @@ -546,6 +546,16 @@ them will be fixed in the short term. Bugs in GHC ~~~~~~~~~~~ +- `readIORef` from `Data.IORef` is missing memory barriers and might + result in inconsistent or unsafe behaviour in multithreaded programs + on architectures with weaker memory models such as AArch64. See + :ghc-ticket:`22468` for more details. + +- `isByteArrayPinned#` considers large `ByteArray#`s pinned, even if they + were not explicitly pinned. This is incorrect if the `ByteArray#` is + subsequently added to a compact region as the `ByteArray#` will be moved in + the process. See :ghc-ticket:`22255` for more details. + - GHC's runtime system implements cooperative multitasking, with context switching potentially occurring only when a program allocates. This means that programs that do not allocate may never |