Apple clang version 14.0.0 (clang-1400.0.29.202)
v3 tree: 58d046645ad TIDBitmap uses sort_template.h for pagetable sorting
== st_ptr_runtime.c, comparator: cmp_item(Item *const *a, Item *const *b)
   v3 sort_template.h, warnings+errors: 19
   1 warning: incompatible function pointer types passing 'int (Item *const *, Item *const *)' (aka 'int (struct Item *const *, struct Item *const *)') to parameter of type 'sort_item_ptrs_compare_function' (aka 'int (*)(const struct Item **, const struct Item **)') [-Wincompatible-function-pointer-types]
  18 warning: passing 'Item **' (aka 'struct Item **') to parameter of type 'const Item **' (aka 'const struct Item **') discards qualifiers in nested pointer types [-Wincompatible-pointer-types-discards-qualifiers]
   v3 + typedef fix, warnings+errors: 0
   v3 + typedef fix, object file built: yes
== st_ptr_runtime_match.c, comparator: cmp_item(const Item **a, const Item **b)
   v3 sort_template.h, warnings+errors: 18
  18 warning: passing 'Item **' (aka 'struct Item **') to parameter of type 'const Item **' (aka 'const struct Item **') discards qualifiers in nested pointer types [-Wincompatible-pointer-types-discards-qualifiers]
   v3 + typedef fix, warnings+errors: 1
   v3 + typedef fix, object file built: st_ptr_runtime_match.c:24:23: warning: incompatible function pointer types passing 'int (const Item **, const Item **)' (aka 'int (const struct Item **, const struct Item **)') to parameter of type 'sort_item_ptrs_compare_function' (aka 'int (*)(struct Item *const *, struct Item *const *)') [-Wincompatible-function-pointer-types]
        sort_item_ptrs(v, n, cmp_item);
                             ^~~~~~~~
/Users/zhongshihao/pg-work/replies-2026-10-16/items/tidbitmap-v3/repro/fixinc/lib/sort_template.h:296:3: note: passing argument to parameter 'compare' here
                ST_SORT_PROTO_COMPARE
                ^
/Users/zhongshihao/pg-work/replies-2026-10-16/items/tidbitmap-v3/repro/fixinc/lib/sort_template.h:161:57: note: expanded from macro 'ST_SORT_PROTO_COMPARE'
#define ST_SORT_PROTO_COMPARE , ST_COMPARATOR_TYPE_NAME compare
                                                        ^
1 warning generated.
yes
== fix
--- /Users/zhongshihao/Desktop/OpenSource/postgres_ai/postgres/.claude/worktrees/wf_da2139a6-f02-6/src/include/lib/sort_template.h	2026-10-16 22:28:31
+++ /Users/zhongshihao/pg-work/replies-2026-10-16/items/tidbitmap-v3/repro/fixinc/lib/sort_template.h	2026-10-16 22:33:44
@@ -59,7 +59,7 @@
  *
  *	  ST_SORT_compare_function is a function pointer of the following type:
  *
- *	  int (*)(const ST_ELEMENT_TYPE *a, const ST_ELEMENT_TYPE *b,
+ *	  int (*)(ST_ELEMENT_TYPE const *a, ST_ELEMENT_TYPE const *b,
  *			  [ST_COMPARE_ARG_TYPE *arg])
  *
  * HISTORY
@@ -185,8 +185,8 @@
 #ifdef ST_DECLARE
 
 #ifdef ST_COMPARE_RUNTIME_POINTER
-typedef int (*ST_COMPARATOR_TYPE_NAME) (const ST_ELEMENT_TYPE *,
-										const ST_ELEMENT_TYPE * ST_SORT_PROTO_ARG);
+typedef int (*ST_COMPARATOR_TYPE_NAME) (ST_ELEMENT_TYPE const *,
+										ST_ELEMENT_TYPE const * ST_SORT_PROTO_ARG);
 #endif
 
 /* Declare the sort function.  Note optional arguments at end. */