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| author | Gustavo Niemeyer <gustavo@niemeyer.net> | 2002-12-16 18:12:53 (GMT) |
|---|---|---|
| committer | Gustavo Niemeyer <gustavo@niemeyer.net> | 2002-12-16 18:12:53 (GMT) |
| commit | 786ddb29c9170a585ca1010bd392fb5a5ff4078c (patch) | |
| tree | f13b95625431e6be163ae9f0a03118b3f9d13a0d /Doc | |
| parent | 17c5a33582be263e3d3484f1c16f17dadeea5b6f (diff) | |
| download | cpython-786ddb29c9170a585ca1010bd392fb5a5ff4078c.zip cpython-786ddb29c9170a585ca1010bd392fb5a5ff4078c.tar.gz cpython-786ddb29c9170a585ca1010bd392fb5a5ff4078c.tar.bz2 | |
Fixed bug
[#521782] unreliable file.read() error handling
* Objects/fileobject.c
(file_read): Clear errors before leaving the loop in all situations,
and also check if some data was read before exiting the loop with an
EWOULDBLOCK exception.
* Doc/lib/libstdtypes.tex
* Objects/fileobject.c
Document that sometimes a read() operation can return less data than
what the user asked, if running in non-blocking mode.
* Misc/NEWS
Document the fix.
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/lib/libstdtypes.tex | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex index a104d85..6dee0c9 100644 --- a/Doc/lib/libstdtypes.tex +++ b/Doc/lib/libstdtypes.tex @@ -1205,7 +1205,9 @@ flush the read-ahead buffer. certain files, like ttys, it makes sense to continue reading after an \EOF{} is hit.) Note that this method may call the underlying C function \cfunction{fread()} more than once in an effort to - acquire as close to \var{size} bytes as possible. + acquire as close to \var{size} bytes as possible. Also note that + when in non-blocking mode, less data than what was requested may + be returned, even if no \var{size} parameter was given. \end{methoddesc} \begin{methoddesc}[file]{readline}{\optional{size}} |