Dox++

python/core/auto_generated/geometry/qgscircularstring.sip.in

@@ -49,6 +49,9 @@ z and m types accordingly.
 
 This constructor is more efficient then calling :py:func:`~QgsCircularString.setPoints`.
 
+If the sizes of ``x`` and ``y`` are non-equal then the resultant circular string
+will be created using the minimum size of these arrays.
+
 .. warning::
 
    It is the caller's responsibility to ensure that the supplied arrays

python/core/auto_generated/geometry/qgslinestring.sip.in

@@ -56,6 +56,9 @@ argument. If ``is25DType`` is ``True`` (and the ``m`` vector is unfilled) then
 the created Linestring will be a LineString25D type. Otherwise, the
 LineString will be LineStringZ (or LineStringZM) type.
 
+If the sizes of ``x`` and ``y`` are non-equal then the resultant linestring
+will be created using the minimum size of these arrays.
+
 .. versionadded:: 3.0
 %End
 

src/core/geometry/qgscircularstring.h

@@ -57,6 +57,9 @@ class CORE_EXPORT QgsCircularString: public QgsCurve
      *
      * This constructor is more efficient then calling setPoints().
      *
+     * If the sizes of \a x and \a y are non-equal then the resultant circular string
+     * will be created using the minimum size of these arrays.
+     *
      * \warning It is the caller's responsibility to ensure that the supplied arrays
      * are of odd sizes.
      *

src/core/geometry/qgslinestring.h

@@ -71,6 +71,9 @@ class CORE_EXPORT QgsLineString: public QgsCurve
      * the created Linestring will be a LineString25D type. Otherwise, the
      * LineString will be LineStringZ (or LineStringZM) type.
      *
+     * If the sizes of \a x and \a y are non-equal then the resultant linestring
+     * will be created using the minimum size of these arrays.
+     *
      * \since QGIS 3.0
      */
     QgsLineString( const QVector<double> &x, const QVector<double> &y,