ARROW-17964: [C++] Range data comparison for struct type may go out o…

…f bounds
apache · Oct 7, 2022 · d4190cc · d4190cc
1 parent 45a008d
commit d4190cc
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/cpp/src/arrow/compare.cc b/cpp/src/arrow/compare.cc
@@ -305,6 +305,11 @@ class RangeDataEqualsImpl {
   Status Visit(const StructType& type) {
     const int32_t num_fields = type.num_fields();
 
+    if (left_.child_data.size() != static_cast<size_t>(num_fields) ||
+        right_.child_data.size() != static_cast<size_t>(num_fields)) {
+      result_ = false;
+      return Status::OK();
+    }
     auto compare_runs = [&](int64_t i, int64_t length) -> bool {
       for (int32_t f = 0; f < num_fields; ++f) {
         RangeDataEqualsImpl impl(options_, floating_approximate_, *left_.child_data[f],