From d556c0444da8f8b7f4761d3b59340262857962f6 Mon Sep 17 00:00:00 2001
From: Charalampos Stratakis <cstratak@redhat.com>
Date: Wed, 28 Jan 2026 01:54:42 +0100
Subject: [PATCH] BUG: specfun/specfun.h: initialize kd in mtu12 to fix
 potential uninitialized use

The kd variable was not initialized before the kf==1/kf==2 conditional
blocks. If kf had an unexpected value, kd would be used uninitialized
when passed to cva2(). Initialize to 0 for consistency with mtu0.

Uncovered by Coverity static analysis.
---
 include/xsf/specfun/specfun.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/xsf/specfun/specfun.h b/include/xsf/specfun/specfun.h
index 72c384f64d..940833e3d1 100644
--- a/include/xsf/specfun/specfun.h
+++ b/include/xsf/specfun/specfun.h
@@ -4760,7 +4760,7 @@ namespace specfun {
 
         T eps = 1.0e-14;
         T a, qm, c1, c2, u1, u2, w1, w2;
-        int kd, km, ic, k, nm = 0;
+        int kd = 0, km, ic, k, nm = 0;
 
         if ((kf == 1) && (m % 2 == 0)) {
             kd = 1;