From a4535d776ca12e4a5f6816e5e12bcc066e1ece4d Mon Sep 17 00:00:00 2001
From: Roy Oursler <roy.j.oursler@intel.com>
Date: Thu, 13 Dec 2018 16:59:21 -0700
Subject: [PATCH] test: Add undefined behaviour sanitizer to test_checks

Change-Id: Id953cca99c6a6c64875185452e2ca6630cf47541
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
---
 tools/test_checks.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/tools/test_checks.sh b/tools/test_checks.sh
index 399f8c3..a5a0f45 100755
--- a/tools/test_checks.sh
+++ b/tools/test_checks.sh
@@ -43,6 +43,23 @@ if uname | grep -q 'Darwin' 2>&1; then
 fi
 
 # Build and run check tests
+if [ -z "$CFLAGS" ]; then
+    CFLAGS='-g -O2 -fsanitize=undefined -fno-sanitize=nonnull-attribute -fsanitize-undefined-trap-on-error'
+
+    if [ $CC ]; then
+       echo int main\(\)\{\}\; | $CC $CFLAGS -xc -o /dev/null - >& /dev/null && sanitize=1
+    elif ( command -V gcc > /dev/null ); then
+       echo int main\(\)\{\}\; |  gcc $CFLAGS -xc -o /dev/null - >& /dev/null && sanitize=1
+    elif ( command -V clang > /dev/null ); then
+       echo int main\(\)\{\}\; |  clang $CFLAGS -xc -o /dev/null - >& /dev/null && sanitize=1
+    fi
+
+    if [ $sanitize ]; then
+	echo "Sanitizing undefined behaviour"
+	export CFLAGS=$CFLAGS
+    fi
+fi
+
 time ./autogen.sh
 time ./configure --prefix=$tmp_install_dir $opt_config_target
 time $MAKE -j $cpus