commit 8eab7e730b719ef313d78b059d58cfa8fefd688a
Author: Anastasia <a.lubennikova@postgrespro.ru>
Date:   Thu Jan 18 16:48:08 2018 +0300

    add support of the indexes with included columns in amcheck

diff --git a/contrib/amcheck/verify_nbtree.c b/contrib/amcheck/verify_nbtree.c
index da518da..fb472b3 100644
--- a/contrib/amcheck/verify_nbtree.c
+++ b/contrib/amcheck/verify_nbtree.c
@@ -1102,10 +1102,10 @@ static inline bool
 invariant_leq_offset(BtreeCheckState *state, ScanKey key,
 					 OffsetNumber upperbound)
 {
-	int16		natts = state->rel->rd_rel->relnatts;
+	int16		nkeyatts = IndexRelationGetNumberOfKeyAttributes(state->rel);
 	int32		cmp;
 
-	cmp = _bt_compare(state->rel, natts, key, state->target, upperbound);
+	cmp = _bt_compare(state->rel, nkeyatts, key, state->target, upperbound);
 
 	return cmp <= 0;
 }
@@ -1121,10 +1121,10 @@ static inline bool
 invariant_geq_offset(BtreeCheckState *state, ScanKey key,
 					 OffsetNumber lowerbound)
 {
-	int16		natts = state->rel->rd_rel->relnatts;
+	int16		nkeyatts = IndexRelationGetNumberOfKeyAttributes(state->rel);
 	int32		cmp;
 
-	cmp = _bt_compare(state->rel, natts, key, state->target, lowerbound);
+	cmp = _bt_compare(state->rel, nkeyatts, key, state->target, lowerbound);
 
 	return cmp >= 0;
 }
@@ -1144,10 +1144,10 @@ invariant_leq_nontarget_offset(BtreeCheckState *state,
 							   Page nontarget, ScanKey key,
 							   OffsetNumber upperbound)
 {
-	int16		natts = state->rel->rd_rel->relnatts;
+	int16		nkeyatts = IndexRelationGetNumberOfKeyAttributes(state->rel);
 	int32		cmp;
 
-	cmp = _bt_compare(state->rel, natts, key, nontarget, upperbound);
+	cmp = _bt_compare(state->rel, nkeyatts, key, nontarget, upperbound);
 
 	return cmp <= 0;
 }