tests: AddressSanitizer (ASan) build options

Add example build options that can be used to enable ASan for hwsim test
cases.

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/example-hostapd.config

@@ -74,3 +74,13 @@ CONFIG_TESTING_OPTIONS=y
 CONFIG_MODULE_TESTS=y
 
 CONFIG_SUITEB=y
+
+# AddressSanitizer (ASan) can be enabled by uncommenting the following lines.
+# This can be used as a more efficient memory error detector than valgrind
+# (though, with still some CPU and memory cost, so VM cases will need more
+# memory allocated for the guest).
+#CFLAGS += -fsanitize=address -O1 -fno-omit-frame-pointer -g
+#LIBS += -fsanitize=address -fno-omit-frame-pointer -g
+#LIBS_h += -fsanitize=address -fno-omit-frame-pointer -g
+#LIBS_n += -fsanitize=address -fno-omit-frame-pointer -g
+#LIBS_c += -fsanitize=address -fno-omit-frame-pointer -g

tests/hwsim/example-wpa_supplicant.config

@@ -119,3 +119,12 @@ CONFIG_TESTING_OPTIONS=y
 CONFIG_MODULE_TESTS=y
 
 CONFIG_SUITEB=y
+
+# AddressSanitizer (ASan) can be enabled by uncommenting the following lines.
+# This can be used as a more efficient memory error detector than valgrind
+# (though, with still some CPU and memory cost, so VM cases will need more
+# memory allocated for the guest).
+#CFLAGS += -fsanitize=address -O1 -fno-omit-frame-pointer -g
+#LIBS += -fsanitize=address -fno-omit-frame-pointer -g
+#LIBS_c += -fsanitize=address -fno-omit-frame-pointer -g
+#LIBS_p += -fsanitize=address -fno-omit-frame-pointer -g