Add comments about kwlookup.c expectations

4 files changed, 6 insertions, 3 deletions

diff --git a/src/backend/parser/keywords.c b/src/backend/parser/keywords.c
index 6d2115e4c8..83db2d2b9c 100644
--- a/src/backend/parser/keywords.c
+++ b/src/backend/parser/keywords.c
@@ -27,5 +27,5 @@ const ScanKeyword ScanKeywords[] = {
 #include "parser/kwlist.h"
 };
 
-/* End of ScanKeywords, for use elsewhere */
+/* End of ScanKeywords, for use in kwlookup.c and elsewhere */
 const ScanKeyword *LastScanKeyword = endof(ScanKeywords);
diff --git a/src/backend/parser/kwlookup.c b/src/backend/parser/kwlookup.c
index ea61b0daa2..f941837fb1 100644
--- a/src/backend/parser/kwlookup.c
+++ b/src/backend/parser/kwlookup.c
@@ -6,6 +6,9 @@
  * NB - this file is also used by ECPG and several frontend programs in
  * src/bin/ including pg_dump and psql
  *
+ * Note that this file expects that the ScanKeywords array is defined
+ * and that LastScanKeyword points to its element one past the last.
+ *
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
diff --git a/src/bin/pg_dump/keywords.c b/src/bin/pg_dump/keywords.c
index 384ea13174..166942678a 100644
--- a/src/bin/pg_dump/keywords.c
+++ b/src/bin/pg_dump/keywords.c
@@ -27,5 +27,5 @@ const ScanKeyword ScanKeywords[] = {
 #include "parser/kwlist.h"
 };
 
-/* End of ScanKeywords, for use elsewhere */
+/* End of ScanKeywords, for use in kwlookup.c */
 const ScanKeyword *LastScanKeyword = endof(ScanKeywords);
diff --git a/src/interfaces/ecpg/preproc/keywords.c b/src/interfaces/ecpg/preproc/keywords.c
index 352ed6d519..fa6db2ed04 100644
--- a/src/interfaces/ecpg/preproc/keywords.c
+++ b/src/interfaces/ecpg/preproc/keywords.c
@@ -26,5 +26,5 @@ const ScanKeyword ScanKeywords[] = {
 #include "parser/kwlist.h"
 };
 
-/* End of ScanKeywords, for use elsewhere */
+/* End of ScanKeywords, for use in kwlookup.c */
 const ScanKeyword *LastScanKeyword = endof(ScanKeywords);