[vala/staging] build: Add --enable-test-ubsan configure option and "test-ubsan" make target

[Rico Tzschichholz <ricotz src gnome org>]

commit d3bfaa4ae34c0e6c7a7a9d124e6c3a276c545391
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed May 12 15:36:33 2021 +0200

    build: Add --enable-test-ubsan configure option and "test-ubsan" make target

 Makefile.am  | 4 ++++
 configure.ac | 7 +++++++
 2 files changed, 11 insertions(+)
---
diff --git a/Makefile.am b/Makefile.am
index 336125516..47032fdd7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -52,6 +52,10 @@ test:
 test-asan:
        cd tests && $(MAKE) $(AM_MAKEFLAGS) check TEST_CFLAGS="$(TEST_CFLAGS) -g3 -fsanitize=address 
-fno-omit-frame-pointer"
 
+.PHONY: test-ubsan
+test-ubsan:
+       cd tests && $(MAKE) $(AM_MAKEFLAGS) check TEST_CFLAGS="$(TEST_CFLAGS) -g3 -fsanitize=undefined"
+
 #if ENABLE_COVERAGE
 .PHONY: coverage coverage-report
 coverage:
diff --git a/configure.ac b/configure.ac
index 51431f935..115b946f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -159,6 +159,13 @@ if test "$enable_test_asan" = "yes"; then
        TEST_CFLAGS="$TEST_CFLAGS -g3 -fsanitize=address -fno-omit-frame-pointer"
 fi
 
+AC_ARG_ENABLE(test-ubsan, AS_HELP_STRING([--enable-test-ubsan], [Enable Undefined Behavior Sanitizer 
analysis for tests]), enable_test_ubsan=$enableval, enable_test_ubsan=no)
+AM_CONDITIONAL(ENABLE_TEST_UBSAN, test x$enable_test_ubsan = xyes)
+
+if test "$enable_test_ubsan" = "yes"; then
+       TEST_CFLAGS="$TEST_CFLAGS -g3 -fsanitize=undefined"
+fi
+
 AC_SUBST(TEST_CFLAGS)