Issue #9617: Signals received during a low-level write operation aren't
ignored by the buffered IO layer anymore.
diff --git a/Modules/_io/bufferedio.c b/Modules/_io/bufferedio.c
index 4678da9..615e644 100644
--- a/Modules/_io/bufferedio.c
+++ b/Modules/_io/bufferedio.c
@@ -1665,6 +1665,11 @@
self->write_pos += n;
self->raw_pos = self->write_pos;
written += Py_SAFE_DOWNCAST(n, Py_off_t, Py_ssize_t);
+ /* Partial writes can return successfully when interrupted by a
+ signal (see write(2)). We must run signal handlers before
+ blocking another time, possibly indefinitely. */
+ if (PyErr_CheckSignals() < 0)
+ goto error;
}
if (restore_pos) {
@@ -1802,6 +1807,11 @@
}
written += n;
remaining -= n;
+ /* Partial writes can return successfully when interrupted by a
+ signal (see write(2)). We must run signal handlers before
+ blocking another time, possibly indefinitely. */
+ if (PyErr_CheckSignals() < 0)
+ goto error;
}
if (self->readable)
_bufferedreader_reset_buf(self);