Fix typos in comments

The changes done in this commit impact comments with no direct
user-visible changes, with fixes for incorrect function, variable or
structure names.

Author: Alexander Lakhin
Discussion: https://postgr.es/m/e8c38840-596a-83d6-bd8d-cebc51111572@gmail.com

5 files changed, 8 insertions, 8 deletions

diff --git a/src/include/access/tableam.h b/src/include/access/tableam.h
index bb6d4f03151..b19d50ecc2e 100644
--- a/src/include/access/tableam.h
+++ b/src/include/access/tableam.h
@@ -358,7 +358,7 @@ typedef struct TableAmRoutine
 	 * allowed by the AM.
 	 *
 	 * Implementations can assume that scan_set_tidrange is always called
-	 * before can_getnextslot_tidrange or after scan_rescan and before any
+	 * before scan_getnextslot_tidrange or after scan_rescan and before any
 	 * further calls to scan_getnextslot_tidrange.
 	 */
 	void		(*scan_set_tidrange) (TableScanDesc scan,
diff --git a/src/include/access/toast_helper.h b/src/include/access/toast_helper.h
index 96d8e5a685c..e971bd2c8ef 100644
--- a/src/include/access/toast_helper.h
+++ b/src/include/access/toast_helper.h
@@ -43,7 +43,7 @@ typedef struct
 	/*
 	 * Before calling toast_tuple_init, the caller must initialize the
 	 * following fields.  Each array must have a length equal to
-	 * ttc_rel->rd_att->natts.  The tts_oldvalues and tts_oldisnull fields
+	 * ttc_rel->rd_att->natts.  The ttc_oldvalues and ttc_oldisnull fields
 	 * should be NULL in the case of an insert.
 	 */
 	Relation	ttc_rel;		/* the relation that contains the tuple */
@@ -53,9 +53,9 @@ typedef struct
 	bool	   *ttc_oldisnull;	/* null flags from previous tuple */
 
 	/*
-	 * Before calling toast_tuple_init, the caller should set tts_attr to
+	 * Before calling toast_tuple_init, the caller should set ttc_attr to
 	 * point to an array of ToastAttrInfo structures of a length equal to
-	 * tts_rel->rd_att->natts.  The contents of the array need not be
+	 * ttc_rel->rd_att->natts.  The contents of the array need not be
 	 * initialized.  ttc_flags also does not need to be initialized.
 	 */
 	uint8		ttc_flags;
diff --git a/src/include/nodes/nodeFuncs.h b/src/include/nodes/nodeFuncs.h
index e63b399b8d9..20921b45b9e 100644
--- a/src/include/nodes/nodeFuncs.h
+++ b/src/include/nodes/nodeFuncs.h
@@ -29,7 +29,7 @@ struct PlanState;				/* avoid including execnodes.h too */
 #define QTW_EXAMINE_RTES_AFTER		0x20	/* examine RTE nodes after their
 											 * contents */
 #define QTW_DONT_COPY_QUERY			0x40	/* do not copy top Query */
-#define QTW_EXAMINE_SORTGROUP		0x80	/* include SortGroupNode lists */
+#define QTW_EXAMINE_SORTGROUP		0x80	/* include SortGroupClause lists */
 
 /* callback function for check_functions_in_node */
 typedef bool (*check_function_callback) (Oid func_id, void *context);
diff --git a/src/include/nodes/queryjumble.h b/src/include/nodes/queryjumble.h
index 204b8f74fd5..3499bfd4a09 100644
--- a/src/include/nodes/queryjumble.h
+++ b/src/include/nodes/queryjumble.h
@@ -11,8 +11,8 @@
  *
  *-------------------------------------------------------------------------
  */
-#ifndef QUERYJUBLE_H
-#define QUERYJUBLE_H
+#ifndef QUERYJUMBLE_H
+#define QUERYJUMBLE_H
 
 #include "nodes/parsenodes.h"
 
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
index 33ec6102c15..a1a93ad706e 100644
--- a/src/include/pg_config_manual.h
+++ b/src/include/pg_config_manual.h
@@ -317,7 +317,7 @@
 
 /*
  * Recover memory used for relcache entries when invalidated.  See
- * RelationBuildDescr() in src/backend/utils/cache/relcache.c.
+ * RelationBuildDesc() in src/backend/utils/cache/relcache.c.
  *
  * This is active automatically for clobber-cache builds when clobbering is
  * active, but can be overridden here by explicitly defining