[processing][gdal] Clip Vector By Mask Layer requires both

layers to have the same CRS

python/plugins/processing/algs/gdal/ClipVectorByMask.py

@@ -26,6 +26,7 @@
 __revision__ = '$Format:%H$'
 
 from qgis.core import (QgsProcessing,
+                       QgsProcessingAlgorithm,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterString,
                        QgsProcessingParameterFeatureSource,
@@ -44,6 +45,9 @@ class ClipVectorByMask(GdalAlgorithm):
     def __init__(self):
         super().__init__()
 
+    def flags(self):
+        return QgsProcessingAlgorithm.FlagSupportsBatch | QgsProcessingAlgorithm.FlagRequiresMatchingCrs # cannot cancel!
+
     def initAlgorithm(self, config=None):
         self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
                                                               self.tr('Input layer')))