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lib: sbi: Fix missing '\0' when buffer szie equal 1

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Fix special case: sbi_snprintf(out, out_len, ...) when out_len equal
1, The previous code will not fill the buffer with any char.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W 2023-07-10 00:03:26 +08:00 • committed by Anup Patel
parent ff43168137
commit a73982d737
1 changed files with 6 additions and 0 deletions
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6
lib/sbi/sbi_console.c
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@ -271,6 +271,12 @@ static int print(char **out, u32 *out_len, const char *format, va_list args)
out_len = &console_tbuf_len;
}
/* handle special case: *out_len == 1*/
if (out) {
if(!out_len || *out_len)
**out = '\0';
}
for (; *format != 0; ++format) {
width = flags = 0;
if (use_tbuf)