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-rw-r--r--tools/lib/traceevent/event-parse.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index f5046191d086..bb8b3db0e583 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -1462,7 +1462,8 @@ static int event_read_fields(struct event_format *event, struct format_field **f
if (read_expect_type(EVENT_ITEM, &token))
goto fail;
- /* add signed type */
+ if (strtoul(token, NULL, 0))
+ field->flags |= FIELD_IS_SIGNED;
free_token(token);
if (read_expected(EVENT_OP, ";") < 0)