diff options
| -rw-r--r-- | Misc/NEWS.d/next/Library/2021-11-16-18-13-49.bpo-41735.D72UY1.rst | 1 | ||||
| -rw-r--r-- | Modules/zlibmodule.c | 5 |
2 files changed, 4 insertions, 2 deletions
diff --git a/Misc/NEWS.d/next/Library/2021-11-16-18-13-49.bpo-41735.D72UY1.rst b/Misc/NEWS.d/next/Library/2021-11-16-18-13-49.bpo-41735.D72UY1.rst new file mode 100644 index 0000000..101da0e --- /dev/null +++ b/Misc/NEWS.d/next/Library/2021-11-16-18-13-49.bpo-41735.D72UY1.rst @@ -0,0 +1 @@ +Fix thread lock in ``zlib.Decompress.flush()`` method before ``PyObject_GetBuffer``. diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c index 67bde70..f964656 100644 --- a/Modules/zlibmodule.c +++ b/Modules/zlibmodule.c @@ -1269,12 +1269,13 @@ zlib_Decompress_flush_impl(compobject *self, PyTypeObject *cls, return NULL; } + ENTER_ZLIB(self); + if (PyObject_GetBuffer(self->unconsumed_tail, &data, PyBUF_SIMPLE) == -1) { + LEAVE_ZLIB(self); return NULL; } - ENTER_ZLIB(self); - self->zst.next_in = data.buf; ibuflen = data.len; |