[update] enable asctime_r function parameter legal.

liukangcc · liukangcc · commit 2adfbcaeca0c · 2021-09-15T14:19:26.000+08:00
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
@@ -239,6 +239,9 @@ RTM_EXPORT(mktime);
 
 char* asctime_r(const struct tm *t, char *buf)
 {
+    RT_ASSERT(rt_strlen(days) > (t->tm_wday << 2));
+    RT_ASSERT(rt_strlen(months) > (t->tm_mon << 2));
+
     /* "Wed Jun 30 21:49:08 1993\n" */
     *(int*) buf = *(int*) (days + (t->tm_wday << 2));
     *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));

Original file line number	Diff line number	Diff line change
`@@ -239,6 +239,9 @@ RTM_EXPORT(mktime);`
`239`	`239`
`240`	`240`	`char* asctime_r(const struct tm t, char buf)`
`241`	`241`	`{`
	`242`	`+ RT_ASSERT(rt_strlen(days) > (t->tm_wday << 2));`
	`243`	`+ RT_ASSERT(rt_strlen(months) > (t->tm_mon << 2));`
	`244`	`+`
`242`	`245`	`/* "Wed Jun 30 21:49:08 1993\n" */`
`243`	`246`	`(int) buf = (int) (days + (t->tm_wday << 2));`
`244`	`247`	`(int) (buf + 4) = (int) (months + (t->tm_mon << 2));`