From f57a12ea3c983bfc178309c3d8dcfe0bb0d1e9e7 Mon Sep 17 00:00:00 2001
From: Jorg Sowa <jorg.sowa@gmail.com>
Date: Fri, 3 Apr 2026 01:06:50 +0200
Subject: [PATCH] fix: correct location for variadicplaceholder nodes

Finalize the node after advancing past T_ELLIPSIS so that parser.prev
captures the end of '...' rather than the preceding '(' token.
Previously start == end and source was empty string.
---
 src/parser/function.js                            |  3 ++-
 test/snapshot/__snapshots__/location.test.js.snap | 12 ++++++------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/parser/function.js b/src/parser/function.js
index 5adebe8ca..51ca34ca6 100644
--- a/src/parser/function.js
+++ b/src/parser/function.js
@@ -413,8 +413,9 @@ module.exports = {
       this.token === this.tok.T_ELLIPSIS &&
       this.peek() === ")"
     ) {
-      result.push(this.node("variadicplaceholder")());
+      const variadicNode = this.node("variadicplaceholder");
       this.next();
+      result.push(variadicNode());
     } else if (this.token !== ")") {
       result = this.read_non_empty_argument_list();
     }
diff --git a/test/snapshot/__snapshots__/location.test.js.snap b/test/snapshot/__snapshots__/location.test.js.snap
index cdd6fdd3d..49fa5f0cd 100644
--- a/test/snapshot/__snapshots__/location.test.js.snap
+++ b/test/snapshot/__snapshots__/location.test.js.snap
@@ -4270,11 +4270,11 @@ Program {
                       "kind": "variadicplaceholder",
                       "loc": Location {
                         "end": Position {
-                          "column": 51,
+                          "column": 54,
                           "line": 1,
-                          "offset": 51,
+                          "offset": 54,
                         },
-                        "source": "",
+                        "source": "...",
                         "start": Position {
                           "column": 51,
                           "line": 1,
@@ -11828,11 +11828,11 @@ Program {
                   "kind": "variadicplaceholder",
                   "loc": Location {
                     "end": Position {
-                      "column": 57,
+                      "column": 60,
                       "line": 1,
-                      "offset": 57,
+                      "offset": 60,
                     },
-                    "source": "",
+                    "source": "...",
                     "start": Position {
                       "column": 57,
                       "line": 1,