sparse: add no_sanitize_address as an ignored attribute

Add attribute "no_sanitize_address" or "__no_sanitize_address__" as an ignored
attribute. Fixes this sparse warning:

include/linux/compiler.h:232:8: error: attribute 'no_sanitize_address': unknown attribute

Also add test case for 'no_sanitize_address': validation/attr-no_sanitize_address.c.
'make check' says for this test case:
    TEST     attribute no_sanitize_address (attr-no_sanitize_address.c)

Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>

2 files changed, 11 insertions, 0 deletions

diff --git a/parse.c b/parse.c
index 66f9353f..205e1264 100644
--- a/parse.c
+++ b/parse.c
@@ -607,6 +607,8 @@ const char *ignored_attributes[] = {
 	"__warning__",
 	"weak",
 	"__weak__",
+	"no_sanitize_address",
+	"__no_sanitize_address__",
 };
 
 
diff --git a/validation/attr-no_sanitize_address.c b/validation/attr-no_sanitize_address.c
new file mode 100644
index 00000000..b57ee55a
--- /dev/null
+++ b/validation/attr-no_sanitize_address.c
@@ -0,0 +1,9 @@
+#define __no_sanitize_address __attribute__((no_sanitize_address))
+
+static void __no_sanitize_address bar(void)
+{
+}
+
+/*
+ * check-name: attribute no_sanitize_address
+ */