Prevent possible compiler warnings.

robertmhaas · robertmhaas · commit a3e8486dffc4 · 2011-02-17T16:01:46.000-05:00
Simon Riggs reports that rnode.dbNode and rnode.spcNode were
generating unused variable warnings on gcc 4.4.3 with CFLAGS=-O1
diff --git a/src/backend/utils/adt/dbsize.c b/src/backend/utils/adt/dbsize.c
@@ -603,6 +603,9 @@ pg_relation_filepath(PG_FUNCTION_ARGS)
 		default:
 			/* no storage, return NULL */
 			rnode.relNode = InvalidOid;
+			/* some compilers generate warnings without these next two lines */
+			rnode.dbNode = InvalidOid;
+			rnode.spcNode = InvalidOid;
 			break;
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -603,6 +603,9 @@ pg_relation_filepath(PG_FUNCTION_ARGS)`
`603`	`603`	`default:`
`604`	`604`	`/* no storage, return NULL */`
`605`	`605`	`rnode.relNode = InvalidOid;`
	`606`	`+ /* some compilers generate warnings without these next two lines */`
	`607`	`+ rnode.dbNode = InvalidOid;`
	`608`	`+ rnode.spcNode = InvalidOid;`
`606`	`609`	`break;`
`607`	`610`	`}`
`608`	`611`