From 02e29995581cb568a784a9b996cd5e9139cd0737 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 24 Feb 2026 22:13:15 +0100
Subject: [PATCH] FFI: Fix constructor index resolution in JIT compiler.

Reported by Vladimir Davydov and Sergey Kaplun. #1441
---
 src/lj_crecord.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lj_crecord.c b/src/lj_crecord.c
index 85362ea5..4adfefe6 100644
--- a/src/lj_crecord.c
+++ b/src/lj_crecord.c
@@ -811,6 +811,8 @@ again:
 	  }
 	  J->base[0] = lj_ir_kint(J, (int32_t)fct->size);
 	  return;  /* Interpreter will throw for newindex. */
+	} else if (cd && cd->ctypeid == CTID_CTYPEID) {
+	  /* Only resolve constants and metamethods for constructors. */
 	} else if (ctype_isbitfield(fct->info)) {
 	  lj_trace_err(J, LJ_TRERR_NYICONV);
 	} else {