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| author | Ben Gamari <bgamari.foss@gmail.com> | 2018-11-22 11:33:39 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-11-22 12:11:16 -0500 |
| commit | 4ba3fa31ddfa12b428bd67216a2d4118dc9e8311 (patch) | |
| tree | 4eecbd69f4d6733cfc608cd1e9d4a82052f38493 /libraries | |
| parent | 011e39d7fe533ca772beeed8529749c4750d4817 (diff) | |
| download | haskell-4ba3fa31ddfa12b428bd67216a2d4118dc9e8311.tar.gz | |
base: Mention openFile throwing does-not-exist-errors on FIFOs
As discussed in #15715, the POSIX specification specifies that
attempting to open a FIFO in write-only mode when the FIFO has no
readers will fail with -ENOENT.
[skip ci]
Test Plan: Read it
Reviewers: hvr
Subscribers: rwbarton, carter
GHC Trac Issues: #15715
Differential Revision: https://phabricator.haskell.org/D5295
Diffstat (limited to 'libraries')
| -rw-r--r-- | libraries/base/GHC/IO/Handle/FD.hs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libraries/base/GHC/IO/Handle/FD.hs b/libraries/base/GHC/IO/Handle/FD.hs index 883bc5fe59..64179768c9 100644 --- a/libraries/base/GHC/IO/Handle/FD.hs +++ b/libraries/base/GHC/IO/Handle/FD.hs @@ -131,7 +131,9 @@ addFilePathToIOError fun fp ioe -- * 'System.IO.Error.isAlreadyInUseError' if the file is already open and -- cannot be reopened; -- --- * 'System.IO.Error.isDoesNotExistError' if the file does not exist; or +-- * 'System.IO.Error.isDoesNotExistError' if the file does not exist or +-- (on POSIX systems) is a FIFO without a reader and 'WriteMode' was +-- requested; or -- -- * 'System.IO.Error.isPermissionError' if the user does not have permission -- to open the file. |