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authorSerhiy Storchaka <storchaka@gmail.com>2024-02-09 10:36:12 (GMT)
committerGitHub <noreply@github.com>2024-02-09 10:36:12 (GMT)
commit846fd721d518dda88a7d427ec3d2c03c45d9fa90 (patch)
tree4c6b5f8e5dcc88646b945c1532e1be8835399eec /Modules/_io
parentc968dc7ff3041137bb702436ff944692dede1ad1 (diff)
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gh-115059: Flush the underlying write buffer in io.BufferedRandom.read1() (GH-115163)
Diffstat (limited to 'Modules/_io')
-rw-r--r--Modules/_io/bufferedio.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/Modules/_io/bufferedio.c b/Modules/_io/bufferedio.c
index f02207a..8ebe9ec 100644
--- a/Modules/_io/bufferedio.c
+++ b/Modules/_io/bufferedio.c
@@ -1050,6 +1050,16 @@ _io__Buffered_read1_impl(buffered *self, Py_ssize_t n)
Py_DECREF(res);
return NULL;
}
+ /* Flush the write buffer if necessary */
+ if (self->writable) {
+ PyObject *r = buffered_flush_and_rewind_unlocked(self);
+ if (r == NULL) {
+ LEAVE_BUFFERED(self)
+ Py_DECREF(res);
+ return NULL;
+ }
+ Py_DECREF(r);
+ }
_bufferedreader_reset_buf(self);
r = _bufferedreader_raw_read(self, PyBytes_AS_STRING(res), n);
LEAVE_BUFFERED(self)