From 1f2ae720af01e63299a5b26b8690f47fd994db5c Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Mon, 25 May 2026 00:35:40 +0200
Subject: [PATCH] Make temp1 volatile to keep Clang on AppleM from optimizing
 out the division guards

---
 lapack/getf2/zgetf2_k.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lapack/getf2/zgetf2_k.c b/lapack/getf2/zgetf2_k.c
index 6a2137b3e7..e2c2f75f65 100644
--- a/lapack/getf2/zgetf2_k.c
+++ b/lapack/getf2/zgetf2_k.c
@@ -51,7 +51,8 @@ blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa,
   blasint *ipiv;
   FLOAT *a;
 
-  FLOAT temp1, temp2, temp3, temp4, ratio, den;
+  volatile FLOAT temp1;
+  FLOAT temp2, temp3, temp4, ratio, den;
   blasint i, j;
   blasint ip, jp;
   blasint info;