fix testcase crash on NUTTX When log_buf is null for the first time. (#…

…1844) Signed-off-by: meijian <meijian@xiaomi.com>
nanomsg · Jul 16, 2024 · 8c5142a · 8c5142a
1 parent 603282f
commit 8c5142a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/tests/convey.c b/tests/convey.c
@@ -691,7 +691,9 @@ convey_vlogf(struct convey_log *log, const char *fmt, va_list va, int addnl)
 		if (ptr == NULL) {
 			return;
 		}
-		memcpy(ptr, log->log_buf, log->log_length);
+		if (log->log_buf != NULL && log->log_length != 0) {
+			memcpy(ptr, log->log_buf, log->log_length);
+		}
 		memset(ptr + log->log_length, 0, newsz - log->log_length);
 		free(log->log_buf);
 		log->log_buf  = ptr;