pkarashchenko commented on code in PR #6618:
URL: https://github.com/apache/incubator-nuttx/pull/6618#discussion_r922676875
##########
arch/arm/src/common/arm_semi_syslog.c:
##########
@@ -54,15 +52,25 @@ int up_putc(int ch)
}
/****************************************************************************
- * Name: up_puts
+ * Name: up_nputs
*
* Description:
* Output a string on the console
*
****************************************************************************/
-void up_puts(const char *str)
+void up_nputs(const char *str, size_t len)
{
- smh_call(SEMI_SYSLOG_WRITE0, (char *)str);
+ if (len == ~((size_t)0))
+ {
+ smh_call(SEMI_SYSLOG_WRITE0, (char *)str);
Review Comment:
Yes, but in your changes you assume that string might not be
null-terminated, so both `str` and `len > 0` are performed. According to the
description that you pointed the WRITE0 is: `Writes a null-terminated string to
the debug channel.`, so the ARM debug interface might become broken.
I mean that if we know that string is null-terminated then `len > 0` check
may be omitted in the default implementation of `up_nputs`.
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