GitHub-Mirror/opensbi
2
0
Fork 0
mirror of https://github.com/Fishwaldo/opensbi.git synced 2025-07-05 04:29:07 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

lib: sbi: Fix printc

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

5
lib/sbi/sbi_console.c
View file

@ -142,10 +142,9 @@ static void printc(char **out, u32 *out_len, char ch)
if (!out_len || *out_len > 1) { if (!out_len || *out_len > 1) {
*(*out)++ = ch; *(*out)++ = ch;
**out = '\0'; **out = '\0';
} if (out_len)
if (out_len && *out_len > 0)
--(*out_len); --(*out_len);
}
} }
static int prints(char **out, u32 *out_len, const char *string, int width, static int prints(char **out, u32 *out_len, const char *string, int width,