Fixed uninitialized memory in "runningDifference" function [#CLICKHOU…

…SE-2]
skange · Dec 29, 2018 · cd6a1c9 · cd6a1c9
1 parent e5729c5
commit cd6a1c9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/dbms/src/Functions/runningDifference.h b/dbms/src/Functions/runningDifference.h
@@ -59,7 +59,10 @@ class FunctionRunningDifferenceImpl : public IFunction
         for (size_t i = 0; i < size; ++i)
         {
             if (null_map && (*null_map)[i])
+            {
+                dst[i] = Dst{};
                 continue;
+            }
 
             if (!has_prev_value)
             {