ensure, not insure

From c5347824e5b0d8ff50f63b52aed5e092ffa87e47 Mon Sep 17 00:00:00 2001
From: Peter Smith <peter.b.smith@fujitsu.com>
Date: Wed, 8 Nov 2023 17:45:22 +1100
Subject: [PATCH v1] ensure not insure

---
 src/backend/access/heap/hio.c       | 2 +-
 src/backend/utils/misc/guc_tables.c | 2 +-
 src/include/storage/buf_internals.h | 2 +-
 src/tools/pg_bsd_indent/indent.c    | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/backend/access/heap/hio.c b/src/backend/access/heap/hio.c
index caa6270..ccc4c69 100644
--- a/src/backend/access/heap/hio.c
+++ b/src/backend/access/heap/hio.c
@@ -563,7 +563,7 @@ RelationGetBufferForTuple(Relation relation, Size len,
 	 * on, as cached in the BulkInsertState or relcache entry.  If that
 	 * doesn't work, we ask the Free Space Map to locate a suitable page.
 	 * Since the FSM's info might be out of date, we have to be prepared to
-	 * loop around and retry multiple times. (To insure this isn't an infinite
+	 * loop around and retry multiple times. (To ensure this isn't an infinite
 	 * loop, we must update the FSM with the correct amount of free space on
 	 * each page that proves not to be suitable.)  If the FSM has no record of
 	 * a page with enough free space, we give up and extend the relation.
diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c
index 7605eff..beed72a 100644
--- a/src/backend/utils/misc/guc_tables.c
+++ b/src/backend/utils/misc/guc_tables.c
@@ -1111,7 +1111,7 @@ struct config_bool ConfigureNamesBool[] =
 		{"fsync", PGC_SIGHUP, WAL_SETTINGS,
 			gettext_noop("Forces synchronization of updates to disk."),
 			gettext_noop("The server will use the fsync() system call in several places to make "
-						 "sure that updates are physically written to disk. This insures "
+						 "sure that updates are physically written to disk. This ensures "
 						 "that a database cluster will recover to a consistent state after "
 						 "an operating system or hardware crash.")
 		},
diff --git a/src/include/storage/buf_internals.h b/src/include/storage/buf_internals.h
index bc79a32..98cd249 100644
--- a/src/include/storage/buf_internals.h
+++ b/src/include/storage/buf_internals.h
@@ -212,7 +212,7 @@ BufMappingPartitionLockByIndex(uint32 index)
  * is held.  Thus buffer header lock holder can do complex updates of the
  * state variable in single write, simultaneously with lock release (cleaning
  * BM_LOCKED flag).  On the other hand, updating of state without holding
- * buffer header lock is restricted to CAS, which insure that BM_LOCKED flag
+ * buffer header lock is restricted to CAS, which ensures that BM_LOCKED flag
  * is not set.  Atomic increment/decrement, OR/AND etc. are not allowed.
  *
  * An exception is that if we have the buffer pinned, its tag can't change
diff --git a/src/tools/pg_bsd_indent/indent.c b/src/tools/pg_bsd_indent/indent.c
index 2fd8771..923fc34 100644
--- a/src/tools/pg_bsd_indent/indent.c
+++ b/src/tools/pg_bsd_indent/indent.c
@@ -608,7 +608,7 @@ check_type:
 
 		parse(hd_type);	/* let parser worry about if, or whatever */
 	    }
-	    ps.search_brace = btype_2;	/* this should insure that constructs
+	    ps.search_brace = btype_2;	/* this should ensure that constructs
 					 * such as main(){...} and int[]{...}
 					 * have their braces put in the right
 					 * place */
-- 
1.8.3.1