From 3594c213a7fe99f028c870c4e05e98dbb84a2a8c Mon Sep 17 00:00:00 2001
From: Bruce Wen <wenijinew@gmail.com>
Date: Wed, 18 Jun 2025 19:26:28 +0200
Subject: [PATCH] fix(diagnostics): validate opts.signs #34565

---
 runtime/lua/vim/diagnostic.lua | 1 +
 1 file changed, 1 insertion(+)

diff --git a/runtime/lua/vim/diagnostic.lua b/runtime/lua/vim/diagnostic.lua
index 1d395e8c8f..bed91d3a1b 100644
--- a/runtime/lua/vim/diagnostic.lua
+++ b/runtime/lua/vim/diagnostic.lua
@@ -1527,6 +1527,7 @@ M.handlers.signs = {
     vim.validate('bufnr', bufnr, 'number')
     vim.validate('diagnostics', diagnostics, vim.islist, 'a list of diagnostics')
     vim.validate('opts', opts, 'table', true)
+    vim.validate('opts.signs', (opts and opts or {}).signs, 'table', true)
 
     bufnr = vim._resolve_bufnr(bufnr)
     opts = opts or {}