ignore attributes "externally_visible" and "signal"

This adds more ignored gcc-style attributes.

externally_visible is a standard gcc attribute.
signal is an AVR8 attribute used to define interrupt service routines.

Ignore these attributes, as they are currently not useful for sparse checking.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Christopher Li <sparse@chrisli.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/parse.c b/parse.c
index c956265..b5aced1 100644
--- a/parse.c
+++ b/parse.c
@@ -505,6 +505,8 @@ const char *ignored_attributes[] = {
 	"__dllexport__",
 	"dllimport",
 	"__dllimport__",
+	"externally_visible",
+	"__externally_visible__",
 	"fastcall",
 	"__fastcall__",
 	"format",
@@ -537,6 +539,8 @@ const char *ignored_attributes[] = {
 	"__section__",
 	"sentinel",
 	"__sentinel__",
+	"signal",
+	"__signal__",
 	"stdcall",
 	"__stdcall__",
 	"syscall_linkage",