From ec9b16260212c80b7bc285b09ecd63127090eb6c Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sat, 15 Jul 2023 09:14:44 +0200
Subject: [PATCH] Fix workspace query corner cases to always return at least 1

---
 lapack-netlib/SRC/zsytrf.f | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lapack-netlib/SRC/zsytrf.f b/lapack-netlib/SRC/zsytrf.f
index a775a8758..dc9016c69 100644
--- a/lapack-netlib/SRC/zsytrf.f
+++ b/lapack-netlib/SRC/zsytrf.f
@@ -232,7 +232,7 @@
 *        Determine the block size
 *
          NB = ILAENV( 1, 'ZSYTRF', UPLO, N, -1, -1, -1 )
-         LWKOPT = N*NB
+         LWKOPT = MAX( 1, N*NB )
          WORK( 1 ) = LWKOPT
       END IF
 *