Fix warning introduced in 5c279a6.

Change two macros to be static inline functions instead to keep the
data type consistent. This avoids a "comparison is always true"
warning that was occurring with -Wtype-limits. In the process, change
the names to look less like macros.

Discussion: https://postgr.es/m/20220407063505.njnnrmbn4sxqfsts@alap3.anarazel.de

Author: jeff-davis

src/backend/access/transam/rmgr.c

@@ -101,7 +101,7 @@ RegisterCustomRmgr(RmgrId rmid, RmgrData *rmgr)
 		ereport(ERROR, (errmsg("custom resource manager name is invalid"),
 						errhint("Provide a non-empty name for the custom resource manager.")));
 
-	if (!RMID_IS_CUSTOM(rmid))
+	if (!RmgrIdIsCustom(rmid))
 		ereport(ERROR, (errmsg("custom resource manager ID %d is out of range", rmid),
 						errhint("Provide a custom resource manager ID between %d and %d.",
 								RM_MIN_CUSTOM_ID, RM_MAX_CUSTOM_ID)));
@@ -153,7 +153,7 @@ pg_get_wal_resource_managers(PG_FUNCTION_ARGS)
 			continue;
 		values[0] = Int32GetDatum(rmid);
 		values[1] = CStringGetTextDatum(GetRmgr(rmid).rm_name);
-		values[2] = BoolGetDatum(RMID_IS_BUILTIN(rmid));
+		values[2] = BoolGetDatum(RmgrIdIsBuiltin(rmid));
 		tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls);
 	}
 

src/backend/access/transam/xlogreader.c

@@ -1102,7 +1102,7 @@ ValidXLogRecordHeader(XLogReaderState *state, XLogRecPtr RecPtr,
 							  (uint32) SizeOfXLogRecord, record->xl_tot_len);
 		return false;
 	}
-	if (!RMID_IS_VALID(record->xl_rmid))
+	if (!RmgrIdIsValid(record->xl_rmid))
 	{
 		report_invalid_record(state,
 							  "invalid resource manager ID %u at %X/%X",

src/bin/pg_waldump/pg_waldump.c

@@ -749,7 +749,7 @@ XLogDumpDisplayStats(XLogDumpConfig *config, XLogDumpStats *stats)
 					tot_len;
 		const RmgrDescData *desc;
 
-		if (!RMID_IS_VALID(ri))
+		if (!RmgrIdIsValid(ri))
 			continue;
 
 		desc = GetRmgrDesc(ri);
@@ -761,7 +761,7 @@ XLogDumpDisplayStats(XLogDumpConfig *config, XLogDumpStats *stats)
 			fpi_len = stats->rmgr_stats[ri].fpi_len;
 			tot_len = rec_len + fpi_len;
 
-			if (RMID_IS_CUSTOM(ri) && count == 0)
+			if (RmgrIdIsCustom(ri) && count == 0)
 				continue;
 
 			XLogDumpStatsRow(desc->rm_name,
@@ -1025,7 +1025,7 @@ main(int argc, char **argv)
 					 */
 					if (sscanf(optarg, "custom%03d", &rmid) == 1)
 					{
-						if (!RMID_IS_CUSTOM(rmid))
+						if (!RmgrIdIsCustom(rmid))
 						{
 							pg_log_error("custom resource manager \"%s\" does not exist",
 										 optarg);

src/bin/pg_waldump/rmgrdesc.c

@@ -86,9 +86,9 @@ initialize_custom_rmgrs(void)
 const RmgrDescData *
 GetRmgrDesc(RmgrId rmid)
 {
-	Assert(RMID_IS_VALID(rmid));
+	Assert(RmgrIdIsValid(rmid));
 
-	if (RMID_IS_BUILTIN(rmid))
+	if (RmgrIdIsBuiltin(rmid))
 		return &RmgrDescTable[rmid];
 	else
 	{

src/include/access/rmgr.h

@@ -37,10 +37,20 @@ typedef enum RmgrIds
 #define RM_N_IDS			(UINT8_MAX + 1)
 #define RM_N_BUILTIN_IDS	(RM_MAX_BUILTIN_ID + 1)
 #define RM_N_CUSTOM_IDS		(RM_MAX_CUSTOM_ID - RM_MIN_CUSTOM_ID + 1)
-#define RMID_IS_BUILTIN(rmid) ((rmid) <= RM_MAX_BUILTIN_ID)
-#define RMID_IS_CUSTOM(rmid) ((rmid) >= RM_MIN_CUSTOM_ID && \
-							  (rmid) <= RM_MAX_CUSTOM_ID)
-#define RMID_IS_VALID(rmid) (RMID_IS_BUILTIN((rmid)) || RMID_IS_CUSTOM((rmid)))
+
+static inline bool
+RmgrIdIsBuiltin(int rmid)
+{
+	return rmid <= RM_MAX_BUILTIN_ID;
+}
+
+static inline bool
+RmgrIdIsCustom(int rmid)
+{
+	return rmid >= RM_MIN_CUSTOM_ID && rmid <= RM_MAX_CUSTOM_ID;
+}
+
+#define RmgrIdIsValid(rmid) (RmgrIdIsBuiltin((rmid)) || RmgrIdIsCustom((rmid)))
 
 /*
  * RmgrId to use for extensions that require an RmgrId, but are still in