diff options
| author | Ruediger Meier | 2017-06-11 22:20:24 +0200 |
|---|---|---|
| committer | Karel Zak | 2017-06-14 11:48:22 +0200 |
| commit | f64ddc95f39f2cb5cc5b41748754ecbe81cfa7dd (patch) | |
| tree | b1b34bdccf33999c8b5b27b9a7b823cad43ecedb /login-utils/last.c | |
| parent | hwclock: fix warning [-Winvalid-noreturn] (diff) | |
| download | kernel-qcow2-util-linux-f64ddc95f39f2cb5cc5b41748754ecbe81cfa7dd.tar.gz kernel-qcow2-util-linux-f64ddc95f39f2cb5cc5b41748754ecbe81cfa7dd.tar.xz kernel-qcow2-util-linux-f64ddc95f39f2cb5cc5b41748754ecbe81cfa7dd.zip | |
misc: fix gcc-7 sprintf warnings -Wformat-overflow
../login-utils/last.c: In function ‘main’:
../login-utils/last.c:624:23: warning: ‘%s’ directive writing up to 31 bytes into a region of size 27 [-Wformat-overflow=]
sprintf(path, "/dev/%s", ut->ut_line);
^~ ~~
../login-utils/last.c:624:3: note: ‘sprintf’ output between 6 and 37 bytes into a destination of size 32
sprintf(path, "/dev/%s", ut->ut_line);
../libblkid/src/devname.c: In function 'probe_one':
../libblkid/src/devname.c:166:29: warning: '%s' directive writing up to 255 bytes into a region of size 245 [-Wformat-overflow=]
sprintf(path, "/sys/block/%s/slaves", de->d_name);
^~
../libblkid/src/devname.c:166:3: note: 'sprintf' output between 19 and 274 bytes into a destination of size 256
sprintf(path, "/sys/block/%s/slaves", de->d_name);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Diffstat (limited to 'login-utils/last.c')
| -rw-r--r-- | login-utils/last.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/login-utils/last.c b/login-utils/last.c index f93ec7fbf..c90b574e5 100644 --- a/login-utils/last.c +++ b/login-utils/last.c @@ -598,7 +598,7 @@ static void __attribute__((__noreturn__)) usage(const struct last_control *ctl, static int is_phantom(const struct last_control *ctl, struct utmpx *ut) { struct passwd *pw; - char path[32]; + char path[sizeof(ut->ut_line) + 16]; int ret = 0; if (ut->ut_tv.tv_sec < ctl->boot_time.tv_sec) |