FIX out of bound error in split_indices (#21130)

lorentzenchr · thomasjpfan · ogrisel · glemaitre · commit 1b979325345a · 2021-12-25T12:26:49.000+01:00
Co-authored-by: Thomas J. Fan &lt;thomasjpfan@gmail.com&gt;
Co-authored-by: Olivier Grisel &lt;olivier.grisel@ensta.org&gt;
diff --git a/doc/whats_new/v1.1.rst b/doc/whats_new/v1.1.rst
@@ -38,6 +38,21 @@ Changelog
     :pr:`123456` by :user:`Joe Bloggs <joeongithub>`.
     where 123456 is the *pull request* number, not the issue number.
 
+:mod:`sklearn.calibration`
+..........................
+
+- |Enhancement| :func:`calibration.calibration_curve` accepts a parameter
+  `pos_label` to specify the positive class label.
+  :pr:`21032` by :user:`Guillaume Lemaitre <glemaitre>`.
+
+:mod:`sklearn.ensemble`
+...........................
+
+- |Fix| Fixed a bug that could produce a segfault in rare cases for
+  :class:`ensemble.HistGradientBoostingClassifier` and
+  :class:`ensemble.HistGradientBoostingRegressor`.
+  :pr:`21130` :user:`Christian Lorentzen <lorentzenchr>`.
+
 :mod:`sklearn.linear_model`
 ...........................
 
