[C++] Add overflow check in NullBuilder::AppendNull()

apache · Mar 17, 2019 · 17c7c86 · 17c7c86
1 parent b31315a
commit 17c7c86
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/cpp/src/arrow/array/builder_primitive.h b/cpp/src/arrow/array/builder_primitive.h
@@ -43,6 +43,7 @@ class ARROW_EXPORT NullBuilder : public ArrayBuilder {
 
   /// \brief Append a single null element
   Status AppendNull() {
+    ARROW_RETURN_NOT_OK(CheckCapacity(length_ + 1, length_));
     ++null_count_;
     ++length_;
     return Status::OK();