From 306f0e1a1a3ad40ce71abe942f1f98ee722a827e Mon Sep 17 00:00:00 2001
From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Sun, 13 Sep 2026 12:53:30 -0700
Subject: [PATCH] Align opaque values

Opaque values are cast to njs_value_t pointers by the public API.  Match
njs_value_t alignment while retaining the four uint32_t filler fields.

UndefinedBehaviorSanitizer reports unaligned njs_value_t accesses.
---
 src/njs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/njs.h b/src/njs.h
index b33a8568..b6fa1b47 100644
--- a/src/njs.h
+++ b/src/njs.h
@@ -44,8 +44,9 @@ typedef struct njs_external_s         njs_external_t;
  * sizeof(njs_opaque_value_t) == sizeof(njs_value_t).
  */
 
-typedef struct {
+typedef union {
     uint32_t                        filler[4];
+    uint64_t                        align;
 } njs_opaque_value_t;
 
 /* sizeof(njs_value_t) is 16 bytes. */
-- 
2.47.3