From 8b078cb2975da7be613497f86c1ba62dd5da5f67 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Tue, 8 Oct 2019 19:45:03 +0200
Subject: [PATCH] build system: fix configure handling of undefined behavior
 sanitizer arguments

---
 ac/debugging_profiling.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ac/debugging_profiling.m4 b/ac/debugging_profiling.m4
index 670cc0faf..d162525f2 100644
--- a/ac/debugging_profiling.m4
+++ b/ac/debugging_profiling.m4
@@ -92,7 +92,7 @@ dnl
 
 AC_ARG_ENABLE([ubsan],
   AC_HELP_STRING([--enable-ubsan],[compile with sanitization for undefined behavior turned on (no)]),
-  [USE_UBSAN=$enable_ubsan],[USE_UBSAN=no])
+  [],[enable_ubsan=no])
 
 if test x"$USE_UBSAN" = xyes ; then
   opt_features_yes="$opt_features_yes\n   * development technique 'undefined behavior sanitizer'"