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libfdisk: make self_partition() use more robust [gcc-analyzer] 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2021-08-18 11:28:43 +02:00
parent c36203873f
commit 58b43e4b4f
1 changed files with 3 additions and 2 deletions
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5
libfdisk/src/dos.c
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@ -1944,8 +1944,7 @@ static int dos_add_partition(struct fdisk_context *cxt,
for (i = 0; i < 4; i++) {
struct dos_partition *p = self_partition(cxt, i);
assert(p);
if (is_used_partition(p)) {
if (p && is_used_partition(p)) {
fdisk_sector_t start = dos_partition_get_start(p);
if (first + grain <= start)
free_sectors = 1;
@ -2340,6 +2339,7 @@ static int dos_set_partition(struct fdisk_context *cxt, size_t n,
l = self_label(cxt);
p = self_partition(cxt, n);
assert(p);
pe = self_pte(cxt, n);
if (!pe)
@ -2773,6 +2773,7 @@ static int dos_toggle_partition_flag(
return -EINVAL;
p = self_partition(cxt, i);
assert(p);
switch (flag) {
case DOS_FLAG_ACTIVE: