Throw.

dmlc · Jul 15, 2020 · 04243b7 · 04243b7
1 parent 70e2ecb
commit 04243b7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/common/quantile.h b/src/common/quantile.h
@@ -720,6 +720,8 @@ class HostSketchContainer {
 
   static uint32_t SearchGroupIndFromRow(std::vector<bst_uint> const &group_ptr,
                                         size_t const base_rowid) {
+    CHECK_LT(base_rowid, group_ptr.back())
+        << "Row: " << base_rowid << " is not found in any group.";
     bst_group_t group_ind =
         std::upper_bound(group_ptr.cbegin(), group_ptr.cend() - 1, base_rowid) -
         group_ptr.cbegin() - 1;