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lib: sbi: Fix printc

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Because *out needs to reserve a byte to hold '\0', no more characters
should be added to the buffer when *out has one byte left, and the
buffer size *out_len should not be modified. this patch prevents
the correction of *out_len when *out_len is 1.

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 00:02:29 +08:00 • committed by Anup Patel
parent 3b6fcddceb
commit cc89fa7b54
1 changed files with 2 additions and 3 deletions
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5
lib/sbi/sbi_console.c
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@ -142,10 +142,9 @@ static void printc(char **out, u32 *out_len, char ch)
if (!out_len || *out_len > 1) {
*(*out)++ = ch;
**out = '\0';
if (out_len)
--(*out_len);
}
if (out_len && *out_len > 0)
--(*out_len);
}
static int prints(char **out, u32 *out_len, const char *string, int width,