Fixup some appendStringInfo and appendPQExpBuffer calls

A number of places were using appendStringInfo() when they could have been
using appendStringInfoString() instead.  While there's no functionality
change there, it's just more efficient to use appendStringInfoString()
when no formatting is required.  Likewise for some
appendStringInfoString() calls which were just appending a single char.
We can just use appendStringInfoChar() for that.

Additionally, many places were using appendPQExpBuffer() when they could
have used appendPQExpBufferStr(). Change those too.

Patch by Zhijie Hou, but further searching by me found significantly more
places that deserved the same treatment.

Author: Zhijie Hou, David Rowley
Discussion: https://postgr.es/m/cb172cf4361e4c7ba7167429070979d4@G08CNEXMBPEKD05.g08.fujitsu.local

contrib/postgres_fdw/postgres_fdw.c

@@ -2591,7 +2591,7 @@ postgresExplainForeignScan(ForeignScanState *node, ExplainState *es)
 									 quote_identifier(relname));
 				}
 				else
-					appendStringInfo(relations, "%s",
+					appendStringInfoString(relations,
 										   quote_identifier(relname));
 				refname = (char *) list_nth(es->rtable_names, rti - 1);
 				if (refname == NULL)

contrib/test_decoding/test_decoding.c

@@ -606,7 +606,7 @@ pg_output_stream_start(LogicalDecodingContext *ctx, TestDecodingData *data, Reor
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "opening a streamed block for transaction TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "opening a streamed block for transaction");
+		appendStringInfoString(ctx->out, "opening a streamed block for transaction");
 	OutputPluginWrite(ctx, last_write);
 }
 
@@ -623,7 +623,7 @@ pg_decode_stream_stop(LogicalDecodingContext *ctx,
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "closing a streamed block for transaction TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "closing a streamed block for transaction");
+		appendStringInfoString(ctx->out, "closing a streamed block for transaction");
 	OutputPluginWrite(ctx, true);
 }
 
@@ -641,7 +641,7 @@ pg_decode_stream_abort(LogicalDecodingContext *ctx,
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "aborting streamed (sub)transaction TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "aborting streamed (sub)transaction");
+		appendStringInfoString(ctx->out, "aborting streamed (sub)transaction");
 	OutputPluginWrite(ctx, true);
 }
 
@@ -660,7 +660,7 @@ pg_decode_stream_commit(LogicalDecodingContext *ctx,
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "committing streamed transaction TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "committing streamed transaction");
+		appendStringInfoString(ctx->out, "committing streamed transaction");
 
 	if (data->include_timestamp)
 		appendStringInfo(ctx->out, " (at %s)",
@@ -693,7 +693,7 @@ pg_decode_stream_change(LogicalDecodingContext *ctx,
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "streaming change for TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "streaming change for transaction");
+		appendStringInfoString(ctx->out, "streaming change for transaction");
 	OutputPluginWrite(ctx, true);
 }
 
@@ -745,6 +745,6 @@ pg_decode_stream_truncate(LogicalDecodingContext *ctx, ReorderBufferTXN *txn,
 	if (data->include_xids)
 		appendStringInfo(ctx->out, "streaming truncate for TXN %u", txn->xid);
 	else
-		appendStringInfo(ctx->out, "streaming truncate for transaction");
+		appendStringInfoString(ctx->out, "streaming truncate for transaction");
 	OutputPluginWrite(ctx, true);
 }

src/backend/access/rmgrdesc/dbasedesc.c

@@ -37,7 +37,7 @@ dbase_desc(StringInfo buf, XLogReaderState *record)
 		xl_dbase_drop_rec *xlrec = (xl_dbase_drop_rec *) rec;
 		int			i;
 
-		appendStringInfo(buf, "dir");
+		appendStringInfoString(buf, "dir");
 		for (i = 0; i < xlrec->ntablespaces; i++)
 			appendStringInfo(buf, " %u/%u",
 							 xlrec->tablespace_ids[i], xlrec->db_id);

src/backend/commands/explain.c

@@ -2768,14 +2768,14 @@ show_incremental_sort_group_info(IncrementalSortGroupInfo *groupInfo,
 						 groupInfo->groupCount);
 		/* plural/singular based on methodNames size */
 		if (list_length(methodNames) > 1)
-			appendStringInfo(es->str, "s: ");
+			appendStringInfoString(es->str, "s: ");
 		else
-			appendStringInfo(es->str, ": ");
+			appendStringInfoString(es->str, ": ");
 		foreach(methodCell, methodNames)
 		{
-			appendStringInfo(es->str, "%s", (char *) methodCell->ptr_value);
+			appendStringInfoString(es->str, (char *) methodCell->ptr_value);
 			if (foreach_current_index(methodCell) < list_length(methodNames) - 1)
-				appendStringInfo(es->str, ", ");
+				appendStringInfoString(es->str, ", ");
 		}
 
 		if (groupInfo->maxMemorySpaceUsed > 0)
@@ -2882,11 +2882,11 @@ show_incremental_sort_info(IncrementalSortState *incrsortstate,
 		if (prefixsortGroupInfo->groupCount > 0)
 		{
 			if (es->format == EXPLAIN_FORMAT_TEXT)
-				appendStringInfo(es->str, "\n");
+				appendStringInfoChar(es->str, '\n');
 			show_incremental_sort_group_info(prefixsortGroupInfo, "Pre-sorted", true, es);
 		}
 		if (es->format == EXPLAIN_FORMAT_TEXT)
-			appendStringInfo(es->str, "\n");
+			appendStringInfoChar(es->str, '\n');
 	}
 
 	if (incrsortstate->shared_info != NULL)
@@ -2925,11 +2925,11 @@ show_incremental_sort_info(IncrementalSortState *incrsortstate,
 			if (prefixsortGroupInfo->groupCount > 0)
 			{
 				if (es->format == EXPLAIN_FORMAT_TEXT)
-					appendStringInfo(es->str, "\n");
+					appendStringInfoChar(es->str, '\n');
 				show_incremental_sort_group_info(prefixsortGroupInfo, "Pre-sorted", true, es);
 			}
 			if (es->format == EXPLAIN_FORMAT_TEXT)
-				appendStringInfo(es->str, "\n");
+				appendStringInfoChar(es->str, '\n');
 
 			if (es->workers_state)
 				ExplainCloseWorker(n, es);

src/backend/replication/backup_manifest.c

@@ -112,7 +112,7 @@ AddFileToBackupManifest(backup_manifest_info *manifest, const char *spcoid,
 	initStringInfo(&buf);
 	if (manifest->first_file)
 	{
-		appendStringInfoString(&buf, "\n");
+		appendStringInfoChar(&buf, '\n');
 		manifest->first_file = false;
 	}
 	else
@@ -152,7 +152,7 @@ AddFileToBackupManifest(backup_manifest_info *manifest, const char *spcoid,
 	enlargeStringInfo(&buf, 128);
 	buf.len += pg_strftime(&buf.data[buf.len], 128, "%Y-%m-%d %H:%M:%S %Z",
 						   pg_gmtime(&mtime));
-	appendStringInfoString(&buf, "\"");
+	appendStringInfoChar(&buf, '"');
 
 	/* Add checksum information. */
 	if (checksum_ctx->type != CHECKSUM_TYPE_NONE)
@@ -168,7 +168,7 @@ AddFileToBackupManifest(backup_manifest_info *manifest, const char *spcoid,
 		enlargeStringInfo(&buf, 2 * checksumlen);
 		buf.len += hex_encode((char *) checksumbuf, checksumlen,
 							  &buf.data[buf.len]);
-		appendStringInfoString(&buf, "\"");
+		appendStringInfoChar(&buf, '"');
 	}
 
 	/* Close out the object. */

src/backend/replication/libpqwalreceiver/libpqwalreceiver.c

@@ -427,7 +427,7 @@ libpqrcv_startstreaming(WalReceiverConn *conn,
 
 		if (options->proto.logical.streaming &&
 			PQserverVersion(conn->streamConn) >= 140000)
-			appendStringInfo(&cmd, ", streaming 'on'");
+			appendStringInfoString(&cmd, ", streaming 'on'");
 
 		pubnames = options->proto.logical.publication_names;
 		pubnames_str = stringlist_to_identifierstr(conn->streamConn, pubnames);

src/backend/replication/logical/tablesync.c

@@ -774,7 +774,7 @@ copy_table(Relation rel)
 		 * For non-tables, we need to do COPY (SELECT ...), but we can't just
 		 * do SELECT * because we need to not copy generated columns.
 		 */
-		appendStringInfo(&cmd, "COPY (SELECT ");
+		appendStringInfoString(&cmd, "COPY (SELECT ");
 		for (int i = 0; i < lrel.natts; i++)
 		{
 			appendStringInfoString(&cmd, quote_identifier(lrel.attnames[i]));

src/backend/utils/adt/jsonpath.c

@@ -660,7 +660,7 @@ printJsonPathItem(StringInfo buf, JsonPathItem *v, bool inKey,
 			else if (v->content.anybounds.first == v->content.anybounds.last)
 			{
 				if (v->content.anybounds.first == PG_UINT32_MAX)
-					appendStringInfo(buf, "**{last}");
+					appendStringInfoString(buf, "**{last}");
 				else
 					appendStringInfo(buf, "**{%u}",
 									 v->content.anybounds.first);

src/backend/utils/adt/ri_triggers.c

@@ -1663,7 +1663,7 @@ RI_PartitionRemove_Check(Trigger *trigger, Relation fk_rel, Relation pk_rel)
 		appendStringInfo(&querybuf, ") WHERE %s AND (",
 						 constraintDef);
 	else
-		appendStringInfo(&querybuf, ") WHERE (");
+		appendStringInfoString(&querybuf, ") WHERE (");
 
 	sep = "";
 	for (i = 0; i < riinfo->nkeys; i++)

src/backend/utils/adt/ruleutils.c

@@ -5250,7 +5250,7 @@ get_select_query_def(Query *query, deparse_context *context,
 			appendContextKeyword(context, " FETCH FIRST ",
 								 -PRETTYINDENT_STD, PRETTYINDENT_STD, 0);
 			get_rule_expr(query->limitCount, context, false);
-			appendStringInfo(buf, " ROWS WITH TIES");
+			appendStringInfoString(buf, " ROWS WITH TIES");
 		}
 		else
 		{
@@ -11362,7 +11362,7 @@ get_range_partbound_string(List *bound_datums)
 	memset(&context, 0, sizeof(deparse_context));
 	context.buf = buf;
 
-	appendStringInfoString(buf, "(");
+	appendStringInfoChar(buf, '(');
 	sep = "";
 	foreach(cell, bound_datums)
 	{

src/bin/pg_dump/pg_dump.c

@@ -1375,7 +1375,7 @@ expand_foreign_server_name_patterns(Archive *fout,
 
 	for (cell = patterns->head; cell; cell = cell->next)
 	{
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "SELECT oid FROM pg_catalog.pg_foreign_server s\n");
 		processSQLNamePattern(GetConnection(fout), query, cell->val, false,
 							  false, NULL, "s.srvname", NULL, NULL);
@@ -4250,20 +4250,16 @@ getSubscriptions(Archive *fout)
 					  username_subquery);
 
 	if (fout->remoteVersion >= 140000)
-		appendPQExpBuffer(query,
-						  " s.subbinary,\n");
+		appendPQExpBufferStr(query, " s.subbinary,\n");
 	else
-		appendPQExpBuffer(query,
-						  " false AS subbinary,\n");
+		appendPQExpBufferStr(query, " false AS subbinary,\n");
 
 	if (fout->remoteVersion >= 140000)
-		appendPQExpBuffer(query,
-						  " s.substream\n");
+		appendPQExpBufferStr(query, " s.substream\n");
 	else
-		appendPQExpBuffer(query,
-						  " false AS substream\n");
+		appendPQExpBufferStr(query, " false AS substream\n");
 
-	appendPQExpBuffer(query,
+	appendPQExpBufferStr(query,
 						 "FROM pg_subscription s\n"
 						 "WHERE s.subdbid = (SELECT oid FROM pg_database\n"
 						 "                   WHERE datname = current_database())");
@@ -4376,10 +4372,10 @@ dumpSubscription(Archive *fout, SubscriptionInfo *subinfo)
 		appendPQExpBufferStr(query, "NONE");
 
 	if (strcmp(subinfo->subbinary, "t") == 0)
-		appendPQExpBuffer(query, ", binary = true");
+		appendPQExpBufferStr(query, ", binary = true");
 
 	if (strcmp(subinfo->substream, "f") != 0)
-		appendPQExpBuffer(query, ", streaming = on");
+		appendPQExpBufferStr(query, ", streaming = on");
 
 	if (strcmp(subinfo->subsynccommit, "off") != 0)
 		appendPQExpBuffer(query, ", synchronous_commit = %s", fmtId(subinfo->subsynccommit));
@@ -11845,7 +11841,7 @@ dumpFunc(Archive *fout, FuncInfo *finfo)
 	asPart = createPQExpBuffer();
 
 	/* Fetch function-specific details */
-	appendPQExpBuffer(query,
+	appendPQExpBufferStr(query,
 						 "SELECT\n"
 						 "proretset,\n"
 						 "prosrc,\n"
@@ -11856,12 +11852,12 @@ dumpFunc(Archive *fout, FuncInfo *finfo)
 						 "(SELECT lanname FROM pg_catalog.pg_language WHERE oid = prolang) AS lanname,\n");
 
 	if (fout->remoteVersion >= 80300)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "proconfig,\n"
 							 "procost,\n"
 							 "prorows,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "null AS proconfig,\n"
 							 "0 AS procost,\n"
 							 "0 AS prorows,\n");
@@ -11872,55 +11868,55 @@ dumpFunc(Archive *fout, FuncInfo *finfo)
 		 * In 8.4 and up we rely on pg_get_function_arguments and
 		 * pg_get_function_result instead of examining proallargtypes etc.
 		 */
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "pg_catalog.pg_get_function_arguments(oid) AS funcargs,\n"
 							 "pg_catalog.pg_get_function_identity_arguments(oid) AS funciargs,\n"
 							 "pg_catalog.pg_get_function_result(oid) AS funcresult,\n");
 	}
 	else if (fout->remoteVersion >= 80100)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "proallargtypes,\n"
 							 "proargmodes,\n"
 							 "proargnames,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "null AS proallargtypes,\n"
 							 "null AS proargmodes,\n"
 							 "proargnames,\n");
 
 	if (fout->remoteVersion >= 90200)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "proleakproof,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "false AS proleakproof,\n");
 
 	if (fout->remoteVersion >= 90500)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "array_to_string(protrftypes, ' ') AS protrftypes,\n");
 
 	if (fout->remoteVersion >= 90600)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "proparallel,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'u' AS proparallel,\n");
 
 	if (fout->remoteVersion >= 110000)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "prokind,\n");
 	else if (fout->remoteVersion >= 80400)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "CASE WHEN proiswindow THEN 'w' ELSE 'f' END AS prokind,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'f' AS prokind,\n");
 
 	if (fout->remoteVersion >= 120000)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "prosupport\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'-' AS prosupport\n");
 
 	appendPQExpBuffer(query,
@@ -13891,7 +13887,7 @@ dumpAgg(Archive *fout, AggInfo *agginfo)
 	details = createPQExpBuffer();
 
 	/* Get aggregate-specific details */
-	appendPQExpBuffer(query,
+	appendPQExpBufferStr(query,
 						 "SELECT\n"
 						 "aggtransfn,\n"
 						 "aggfinalfn,\n"
@@ -13899,19 +13895,19 @@ dumpAgg(Archive *fout, AggInfo *agginfo)
 						 "agginitval,\n");
 
 	if (fout->remoteVersion >= 80100)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "aggsortop,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "0 AS aggsortop,\n");
 
 	if (fout->remoteVersion >= 80400)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "pg_catalog.pg_get_function_arguments(p.oid) AS funcargs,\n"
 							 "pg_catalog.pg_get_function_identity_arguments(p.oid) AS funciargs,\n");
 
 	if (fout->remoteVersion >= 90400)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "aggkind,\n"
 							 "aggmtransfn,\n"
 							 "aggminvtransfn,\n"
@@ -13923,7 +13919,7 @@ dumpAgg(Archive *fout, AggInfo *agginfo)
 							 "aggmtransspace,\n"
 							 "aggminitval,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'n' AS aggkind,\n"
 							 "'-' AS aggmtransfn,\n"
 							 "'-' AS aggminvtransfn,\n"
@@ -13936,24 +13932,24 @@ dumpAgg(Archive *fout, AggInfo *agginfo)
 							 "NULL AS aggminitval,\n");
 
 	if (fout->remoteVersion >= 90600)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "aggcombinefn,\n"
 							 "aggserialfn,\n"
 							 "aggdeserialfn,\n"
 							 "proparallel,\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'-' AS aggcombinefn,\n"
 							 "'-' AS aggserialfn,\n"
 							 "'-' AS aggdeserialfn,\n"
 							 "'u' AS proparallel,\n");
 
 	if (fout->remoteVersion >= 110000)
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "aggfinalmodify,\n"
 							 "aggmfinalmodify\n");
 	else
-		appendPQExpBuffer(query,
+		appendPQExpBufferStr(query,
 							 "'0' AS aggfinalmodify,\n"
 							 "'0' AS aggmfinalmodify\n");
 

src/bin/pg_upgrade/version.c

@@ -158,13 +158,13 @@ check_for_data_type_usage(ClusterInfo *cluster, const char *typename,
 
 		/* Ranges were introduced in 9.2 */
 		if (GET_MAJOR_VERSION(cluster->major_version) >= 902)
-			appendPQExpBuffer(&querybuf,
+			appendPQExpBufferStr(&querybuf,
 								 "			UNION ALL "
 			/* ranges containing any type selected so far */
 								 "			SELECT t.oid FROM pg_catalog.pg_type t, pg_catalog.pg_range r, x "
 								 "			WHERE t.typtype = 'r' AND r.rngtypid = t.oid AND r.rngsubtype = x.oid");
 
-		appendPQExpBuffer(&querybuf,
+		appendPQExpBufferStr(&querybuf,
 							 "	) foo "
 							 ") "
 		/* now look for stored columns of any such type */

src/bin/psql/describe.c

@@ -6137,15 +6137,14 @@ listOperatorClasses(const char *access_method_pattern,
 						  " pg_catalog.pg_get_userbyid(c.opcowner) AS \"%s\"\n",
 						  gettext_noop("Operator family"),
 						  gettext_noop("Owner"));
-	appendPQExpBuffer(&buf,
+	appendPQExpBufferStr(&buf,
 						 "\nFROM pg_catalog.pg_opclass c\n"
 						 "  LEFT JOIN pg_catalog.pg_am am on am.oid = c.opcmethod\n"
 						 "  LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.opcnamespace\n"
 						 "  LEFT JOIN pg_catalog.pg_type t ON t.oid = c.opcintype\n"
-					  "  LEFT JOIN pg_catalog.pg_namespace tn ON tn.oid = t.typnamespace\n"
-		);
+						 "  LEFT JOIN pg_catalog.pg_namespace tn ON tn.oid = t.typnamespace\n");
 	if (verbose)
-		appendPQExpBuffer(&buf,
+		appendPQExpBufferStr(&buf,
 							 "  LEFT JOIN pg_catalog.pg_opfamily of ON of.oid = c.opcfamily\n"
 							 "  LEFT JOIN pg_catalog.pg_namespace ofn ON ofn.oid = of.opfnamespace\n");
 
@@ -6216,11 +6215,10 @@ listOperatorFamilies(const char *access_method_pattern,
 		appendPQExpBuffer(&buf,
 						  ",\n  pg_catalog.pg_get_userbyid(f.opfowner) AS \"%s\"\n",
 						  gettext_noop("Owner"));
-	appendPQExpBuffer(&buf,
+	appendPQExpBufferStr(&buf,
 						 "\nFROM pg_catalog.pg_opfamily f\n"
 						 "  LEFT JOIN pg_catalog.pg_am am on am.oid = f.opfmethod\n"
-					  "  LEFT JOIN pg_catalog.pg_namespace n ON n.oid = f.opfnamespace\n"
-		);
+						 "  LEFT JOIN pg_catalog.pg_namespace n ON n.oid = f.opfnamespace\n");
 
 	if (access_method_pattern)
 		have_where = processSQLNamePattern(pset.db, &buf, access_method_pattern,
@@ -6240,7 +6238,7 @@ listOperatorFamilies(const char *access_method_pattern,
 							  "tn.nspname", "t.typname",
 							  "pg_catalog.format_type(t.oid, NULL)",
 							  "pg_catalog.pg_type_is_visible(t.oid)");
-		appendPQExpBuffer(&buf, "  )\n");
+		appendPQExpBufferStr(&buf, "  )\n");
 	}
 
 	appendPQExpBufferStr(&buf, "ORDER BY 1, 2;");
@@ -6307,13 +6305,13 @@ listOpFamilyOperators(const char *access_method_pattern,
 		appendPQExpBuffer(&buf,
 						  ", ofs.opfname AS \"%s\"\n",
 						  gettext_noop("Sort opfamily"));
-	appendPQExpBuffer(&buf,
+	appendPQExpBufferStr(&buf,
 						 "FROM pg_catalog.pg_amop o\n"
 						 "  LEFT JOIN pg_catalog.pg_opfamily of ON of.oid = o.amopfamily\n"
 						 "  LEFT JOIN pg_catalog.pg_am am ON am.oid = of.opfmethod AND am.oid = o.amopmethod\n"
 						 "  LEFT JOIN pg_catalog.pg_namespace nsf ON of.opfnamespace = nsf.oid\n");
 	if (verbose)
-		appendPQExpBuffer(&buf,
+		appendPQExpBufferStr(&buf,
 							 "  LEFT JOIN pg_catalog.pg_opfamily ofs ON ofs.oid = o.amopsortfamily\n");
 
 	if (access_method_pattern)
@@ -6393,7 +6391,7 @@ listOpFamilyFunctions(const char *access_method_pattern,
 						  ", ap.amproc::pg_catalog.regprocedure AS \"%s\"\n",
 						  gettext_noop("Function"));
 
-	appendPQExpBuffer(&buf,
+	appendPQExpBufferStr(&buf,
 						 "FROM pg_catalog.pg_amproc ap\n"
 						 "  LEFT JOIN pg_catalog.pg_opfamily of ON of.oid = ap.amprocfamily\n"
 						 "  LEFT JOIN pg_catalog.pg_am am ON am.oid = of.opfmethod\n"

src/bin/scripts/reindexdb.c

@@ -614,7 +614,7 @@ get_parallel_object_list(PGconn *conn, ReindexType type,
 	{
 		case REINDEX_DATABASE:
 			Assert(user_list == NULL);
-			appendPQExpBuffer(&catalog_query,
+			appendPQExpBufferStr(&catalog_query,
 								 "SELECT c.relname, ns.nspname\n"
 								 " FROM pg_catalog.pg_class c\n"
 								 " JOIN pg_catalog.pg_namespace ns"
@@ -637,7 +637,7 @@ get_parallel_object_list(PGconn *conn, ReindexType type,
 				 * All the tables from all the listed schemas are grabbed at
 				 * once.
 				 */
-				appendPQExpBuffer(&catalog_query,
+				appendPQExpBufferStr(&catalog_query,
 									 "SELECT c.relname, ns.nspname\n"
 									 " FROM pg_catalog.pg_class c\n"
 									 " JOIN pg_catalog.pg_namespace ns"
@@ -652,14 +652,14 @@ get_parallel_object_list(PGconn *conn, ReindexType type,
 					const char *nspname = cell->val;
 
 					if (nsp_listed)
-						appendPQExpBuffer(&catalog_query, ", ");
+						appendPQExpBufferStr(&catalog_query, ", ");
 					else
 						nsp_listed = true;
 
 					appendStringLiteralConn(&catalog_query, nspname, conn);
 				}
 
-				appendPQExpBuffer(&catalog_query, ")\n"
+				appendPQExpBufferStr(&catalog_query, ")\n"
 									 " ORDER BY c.relpages DESC;");
 			}
 			break;

src/pl/plpython/plpy_elog.c

@@ -216,7 +216,7 @@ PLy_traceback(PyObject *e, PyObject *v, PyObject *tb,
 	else if (strcmp(e_module_s, "builtins") == 0
 			 || strcmp(e_module_s, "__main__") == 0
 			 || strcmp(e_module_s, "exceptions") == 0)
-		appendStringInfo(&xstr, "%s", e_type_s);
+		appendStringInfoString(&xstr, e_type_s);
 	else
 		appendStringInfo(&xstr, "%s.%s", e_module_s, e_type_s);
 	appendStringInfo(&xstr, ": %s", vstr);