[njs] Fixed empty labelled statement in a function.

[noreply at nginx.com]

details:   https://github.com/nginx/njs/commit/7f10ae251661656dfd4f40ac3347fba802c14399
branches:  master
commit:    7f10ae251661656dfd4f40ac3347fba802c14399
user:      Vadim Zhestikov <v.zhestikov at f5.com>
date:      Fri, 5 Jul 2024 11:23:33 -0700
description:
Fixed empty labelled statement in a function.


---
 src/njs_parser.c         | 33 +++++++++++++++++++++------------
 src/test/njs_unit_test.c | 16 ++++++++++++++++
 2 files changed, 37 insertions(+), 12 deletions(-)

diff --git a/src/njs_parser.c b/src/njs_parser.c
index dbd9169f..7eb6292e 100644
--- a/src/njs_parser.c
+++ b/src/njs_parser.c
@@ -6699,23 +6699,32 @@ njs_parser_labelled_statement_after(njs_parser_t *parser,
 {
     njs_int_t                ret;
     uintptr_t                unique_id;
+    njs_parser_node_t        *node;
     const njs_lexer_entry_t  *entry;
 
-    if (parser->node != NULL) {
-        /* The statement is not empty block or just semicolon. */
-
-        unique_id = (uintptr_t) parser->target;
-        entry = (const njs_lexer_entry_t *) unique_id;
-
-        ret = njs_name_copy(parser->vm, &parser->node->name, &entry->name);
-        if (ret != NJS_OK) {
+    node = parser->node;
+    if (node == NULL) {
+        node = njs_parser_node_new(parser, NJS_TOKEN_BLOCK);
+        if (node == NULL) {
             return NJS_ERROR;
         }
 
-        ret = njs_label_remove(parser->vm, parser->scope, unique_id);
-        if (ret != NJS_OK) {
-            return NJS_ERROR;
-        }
+        node->token_line = token->line;
+
+        parser->node = node;
+    }
+
+    unique_id = (uintptr_t) parser->target;
+    entry = (const njs_lexer_entry_t *) unique_id;
+
+    ret = njs_name_copy(parser->vm, &parser->node->name, &entry->name);
+    if (ret != NJS_OK) {
+        return NJS_ERROR;
+    }
+
+    ret = njs_label_remove(parser->vm, parser->scope, unique_id);
+    if (ret != NJS_OK) {
+        return NJS_ERROR;
     }
 
     return njs_parser_stack_pop(parser);
diff --git a/src/test/njs_unit_test.c b/src/test/njs_unit_test.c
index 2f0e318c..75933665 100644
--- a/src/test/njs_unit_test.c
+++ b/src/test/njs_unit_test.c
@@ -3494,6 +3494,22 @@ static njs_unit_test_t  njs_test[] =
                  "} catch(e) {c = 10;}; [c, fin]"),
       njs_str("1,1") },
 
+    { njs_str("function v1() {"
+                 "function v2 () {}"
+                 "v3:;"
+                 "1;"
+              "} v1();"),
+      njs_str("undefined") },
+
+    { njs_str("function v1() {"
+                 "function v2 () {}"
+                 "v3:;"
+              "} v1();"),
+      njs_str("undefined") },
+
+    { njs_str("{v1:;}"),
+      njs_str("undefined") },
+
     /* jumping out of a nested try-catch block. */
 
     { njs_str("var r = 0; "