From 1961644fa4ae40e857ed4356c7da434e4d1ba0ab Mon Sep 17 00:00:00 2001 From: Eric_He Date: Sun, 23 Apr 2023 10:55:42 +0800 Subject: [PATCH] Modify the null pointer fifo to access first and then judge --- components/connectivity/mqttclient/common/log/fifo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/components/connectivity/mqttclient/common/log/fifo.c b/components/connectivity/mqttclient/common/log/fifo.c index 059bf24f..e3f31761 100644 --- a/components/connectivity/mqttclient/common/log/fifo.c +++ b/components/connectivity/mqttclient/common/log/fifo.c @@ -98,10 +98,10 @@ unsigned int salof_fifo_read(salof_fifo_t fifo, void *buff, unsigned int len, un { int l; - salof_sem_pend(fifo->sem, timeout); - if((!fifo) || (!buff) || (!len)) return 0; + + salof_sem_pend(fifo->sem, timeout); len = FIFO_MIN(len, fifo->in - fifo->out);