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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2024-03-04 19:58:49 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2024-03-05 16:28:04 +0100 |
| commit | 85ffcfca19bab72a68b339c17fe8ff46691eebc9 (patch) | |
| tree | b162501cd4521c2f7865414291ecc849e828e4e7 /lib | |
| parent | b0b6b9bd263420a75a48871a2ddb87a33ac42493 (diff) | |
| download | barebox-85ffcfca19bab72a68b339c17fe8ff46691eebc9.tar.gz barebox-85ffcfca19bab72a68b339c17fe8ff46691eebc9.tar.xz | |
vsprintf: guard against NULL in UUID %pU
To make %pU more useful for debugging, have it handle NULL gracefully.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240304190038.3486881-5-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vsprintf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 3dda158683..b12d04e378 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -329,6 +329,10 @@ char *uuid_string(char *buf, const char *end, const u8 *addr, int field_width, const u8 *index = be; bool uc = false; + /* If addr == NULL output the string '<NULL>' */ + if (!addr) + return string(buf, end, NULL, field_width, precision, flags); + switch (*(++fmt)) { case 'L': uc = true; /* fall-through */ |