candump: add sprintf error handling in sprint_timestamp

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
2024-02-27 11:33:01 +01:00 · 2024-02-27 11:33:01 +01:00 · 57238d5f81
parent f491175d72
commit 57238d5f81
1 changed files with 5 additions and 0 deletions
--- a/candump.c
+++ b/candump.c
@ -270,6 +270,11 @@ static int sprint_timestamp(char *ts_buffer, const char timestamp,
 		break;
 	}

+	if (numchars <= 0) {
+		ts_buffer[0] = 0; /* empty terminated string */
+		numchars = 0;
+	}
+
 	return numchars;
 }