From 69bed0431c4df39d18522116e34476fbdf481607 Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date: Sat, 11 Oct 2025 11:03:00 -0400
Subject: [PATCH] vim-patch:9.0.1427: warning for uninitialized variable

Problem:    Warning for uninitialized variable. (Tony Mechelynck)
Solution:   Add #ifdef.

https://github.com/vim/vim/commit/1f76138ff1d08a8474cfcaf743448caf679416a3

Co-authored-by: Bram Moolenaar <Bram@vim.org>
---
 src/nvim/regexp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nvim/regexp.c b/src/nvim/regexp.c
index 89a85b80e6..0968cbdd4f 100644
--- a/src/nvim/regexp.c
+++ b/src/nvim/regexp.c
@@ -15050,7 +15050,7 @@ static int nfa_regmatch(nfa_regprog_T *prog, nfa_state_T *start, regsubs_T *subm
         int subidx;
         int bytelen;
 
-        if (t->state->c <= NFA_BACKREF9) {
+        if (t->state->c >= NFA_BACKREF1 && t->state->c <= NFA_BACKREF9) {
           subidx = t->state->c - NFA_BACKREF1 + 1;
           result = match_backref(&t->subs.norm, subidx, &bytelen);
         } else {