MDEV-16050 cte + geometry functions lead to crash.

Structures based on Gcalc_dyn_list need to be treated
properly when copied in Item::get_copy().

1 files changed, 7 insertions, 0 deletions

diff --git a/sql/gcalc_slicescan.h b/sql/gcalc_slicescan.h
index b9516fc8d8c..ebf173c1a57 100644
--- a/sql/gcalc_slicescan.h
+++ b/sql/gcalc_slicescan.h
@@ -63,6 +63,7 @@ public:
   };
 
   Gcalc_dyn_list(size_t blk_size, size_t sizeof_item);
+  Gcalc_dyn_list(const Gcalc_dyn_list &dl);
   ~Gcalc_dyn_list();
   Item *new_item()
   {
@@ -229,6 +230,12 @@ public:
     Gcalc_dyn_list(blk_size, sizeof(Info)),
     m_hook(&m_first), m_n_points(0)
   {}
+
+  Gcalc_heap(const Gcalc_heap &gh) :
+    Gcalc_dyn_list(gh),
+    m_hook(&m_first), m_n_points(0)
+  {}
+
   void set_extent(double xmin, double xmax, double ymin, double ymax);
   Info *new_point_info(double x, double y, gcalc_shape_info shape);
   void free_point_info(Info *i, Gcalc_dyn_list::Item **i_hook);