From d28aafb6dda326688e2f042c95c93ea57963c03c Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Thu, 23 Feb 2017 12:23:12 -0500
Subject: Remove pg_control's enableIntTimes field.

We don't need it any more.

pg_controldata continues to report that date/time type storage is
"64-bit integers", but that's now a hard-wired behavior not something
it sees in the data.  This avoids breaking pg_upgrade, and perhaps other
utilities that inspect pg_control this way.  Ditto for pg_resetwal.

I chose to remove the "bigint_timestamps" output column of
pg_control_init(), though, as that function hasn't been around long
and probably doesn't have ossified users.

Discussion: https://postgr.es/m/26788.1487455319@sss.pgh.pa.us
---
 src/backend/access/transam/xlog.c       | 21 ---------------------
 src/backend/utils/misc/pg_controldata.c | 23 +++++++++--------------
 2 files changed, 9 insertions(+), 35 deletions(-)

(limited to 'src/backend')

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index f23e1086280..ebae9da0f85 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -4379,11 +4379,6 @@ WriteControlFile(void)
 	ControlFile->toast_max_chunk_size = TOAST_MAX_CHUNK_SIZE;
 	ControlFile->loblksize = LOBLKSIZE;
 
-#ifdef HAVE_INT64_TIMESTAMP
-	ControlFile->enableIntTimes = true;
-#else
-	ControlFile->enableIntTimes = false;
-#endif
 	ControlFile->float4ByVal = FLOAT4PASSBYVAL;
 	ControlFile->float8ByVal = FLOAT8PASSBYVAL;
 
@@ -4579,22 +4574,6 @@ ReadControlFile(void)
 					ControlFile->loblksize, (int) LOBLKSIZE),
 				 errhint("It looks like you need to recompile or initdb.")));
 
-#ifdef HAVE_INT64_TIMESTAMP
-	if (ControlFile->enableIntTimes != true)
-		ereport(FATAL,
-				(errmsg("database files are incompatible with server"),
-				 errdetail("The database cluster was initialized without HAVE_INT64_TIMESTAMP"
-				  " but the server was compiled with HAVE_INT64_TIMESTAMP."),
-				 errhint("It looks like you need to recompile or initdb.")));
-#else
-	if (ControlFile->enableIntTimes != false)
-		ereport(FATAL,
-				(errmsg("database files are incompatible with server"),
-				 errdetail("The database cluster was initialized with HAVE_INT64_TIMESTAMP"
-			   " but the server was compiled without HAVE_INT64_TIMESTAMP."),
-				 errhint("It looks like you need to recompile or initdb.")));
-#endif
-
 #ifdef USE_FLOAT4_BYVAL
 	if (ControlFile->float4ByVal != true)
 		ereport(FATAL,
diff --git a/src/backend/utils/misc/pg_controldata.c b/src/backend/utils/misc/pg_controldata.c
index 93a3d38b1d0..d8454111a89 100644
--- a/src/backend/utils/misc/pg_controldata.c
+++ b/src/backend/utils/misc/pg_controldata.c
@@ -266,8 +266,8 @@ pg_control_recovery(PG_FUNCTION_ARGS)
 Datum
 pg_control_init(PG_FUNCTION_ARGS)
 {
-	Datum		values[13];
-	bool		nulls[13];
+	Datum		values[12];
+	bool		nulls[12];
 	TupleDesc	tupdesc;
 	HeapTuple	htup;
 	ControlFileData *ControlFile;
@@ -277,7 +277,7 @@ pg_control_init(PG_FUNCTION_ARGS)
 	 * Construct a tuple descriptor for the result row.  This must match this
 	 * function's pg_proc entry!
 	 */
-	tupdesc = CreateTemplateTupleDesc(13, false);
+	tupdesc = CreateTemplateTupleDesc(12, false);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 1, "max_data_alignment",
 					   INT4OID, -1, 0);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 2, "database_block_size",
@@ -296,13 +296,11 @@ pg_control_init(PG_FUNCTION_ARGS)
 					   INT4OID, -1, 0);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 9, "large_object_chunk_size",
 					   INT4OID, -1, 0);
-	TupleDescInitEntry(tupdesc, (AttrNumber) 10, "bigint_timestamps",
+	TupleDescInitEntry(tupdesc, (AttrNumber) 10, "float4_pass_by_value",
 					   BOOLOID, -1, 0);
-	TupleDescInitEntry(tupdesc, (AttrNumber) 11, "float4_pass_by_value",
+	TupleDescInitEntry(tupdesc, (AttrNumber) 11, "float8_pass_by_value",
 					   BOOLOID, -1, 0);
-	TupleDescInitEntry(tupdesc, (AttrNumber) 12, "float8_pass_by_value",
-					   BOOLOID, -1, 0);
-	TupleDescInitEntry(tupdesc, (AttrNumber) 13, "data_page_checksum_version",
+	TupleDescInitEntry(tupdesc, (AttrNumber) 12, "data_page_checksum_version",
 					   INT4OID, -1, 0);
 	tupdesc = BlessTupleDesc(tupdesc);
 
@@ -339,18 +337,15 @@ pg_control_init(PG_FUNCTION_ARGS)
 	values[8] = Int32GetDatum(ControlFile->loblksize);
 	nulls[8] = false;
 
-	values[9] = BoolGetDatum(ControlFile->enableIntTimes);
+	values[9] = BoolGetDatum(ControlFile->float4ByVal);
 	nulls[9] = false;
 
-	values[10] = BoolGetDatum(ControlFile->float4ByVal);
+	values[10] = BoolGetDatum(ControlFile->float8ByVal);
 	nulls[10] = false;
 
-	values[11] = BoolGetDatum(ControlFile->float8ByVal);
+	values[11] = Int32GetDatum(ControlFile->data_checksum_version);
 	nulls[11] = false;
 
-	values[12] = Int32GetDatum(ControlFile->data_checksum_version);
-	nulls[12] = false;
-
 	htup = heap_form_tuple(tupdesc, values, nulls);
 
 	PG_RETURN_DATUM(HeapTupleGetDatum(htup));
-- 
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