Simplify daisy chaining local labels.

[r28309]

diff --git a/parser.c b/parser.c
index ce7ce2f..c99427c 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -10099,8 +10099,9 @@ static statement_t *parse_local_label_declaration(void)
 
        eat(T___label__);
 
-       entity_t *begin = NULL, *end = NULL;
-
+       entity_t *begin   = NULL;
+       entity_t *end     = NULL;
+       entity_t **anchor = &begin;
        do {
                if (token.type != T_IDENTIFIER) {
                        parse_error_expected("while parsing local label declaration",
@@ -10120,11 +10121,9 @@ static statement_t *parse_local_label_declaration(void)
                        entity->base.source_position = token.source_position;
                        entity->base.symbol          = symbol;
 
-                       if (end != NULL)
-                               end->base.next = entity;
-                       end = entity;
-                       if (begin == NULL)
-                               begin = entity;
+                       *anchor = entity;
+                       anchor  = &entity->base.next;
+                       end     = entity;
 
                        environment_push(entity);
                }