diff options
| author | David Feuer <david.feuer@gmail.com> | 2020-12-24 19:24:24 -0500 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-02-22 18:26:50 -0500 |
| commit | f90487cacb16e8398c4c4a84de5a1e33ac4e7867 (patch) | |
| tree | 790477c04a73701eb4b7100a12b936c7a8031028 /docs/users_guide | |
| parent | 4196969c53c55191e644d9eb258c14c2bc8467da (diff) | |
| download | haskell-f90487cacb16e8398c4c4a84de5a1e33ac4e7867.tar.gz | |
Make openFile exception safe
* `openFile` could sometimes leak file descriptors if it
received an asynchronous exception (#19114, #19115). Fix this
on POSIX.
* `openFile` and more importantly `openFileBlocking` could not
be interrupted effectively during the `open` system call (#17912).
Fix this on POSIX.
* Implement `readFile'` using `withFile` to ensure the file is closed promptly on exception.
* Avoid `bracket` in `withFile`, reducing the duration of masking.
Closes #19130.
Addresses #17912, #19114, and #19115 on POSIX systems, but not
on Windows.
Diffstat (limited to 'docs/users_guide')
| -rw-r--r-- | docs/users_guide/9.2.1-notes.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/users_guide/9.2.1-notes.rst b/docs/users_guide/9.2.1-notes.rst index e06aa5b11b..06134387f3 100644 --- a/docs/users_guide/9.2.1-notes.rst +++ b/docs/users_guide/9.2.1-notes.rst @@ -197,3 +197,6 @@ Runtime system charVal :: forall n proxy. KnownChar n => proxy n -> Char charVal' :: forall n. KnownChar n => Proxy# n -> Char + +- On POSIX, ``System.IO.openFile`` can no longer leak a file descriptor if it + is interrupted by an asynchronous exception (#19114, #19115). |