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Anand Jain cad1db97c5 btrfs-progs: fix compiler warning when usage string is NULL 
On systems with glibc 2.34 and 2.39, the following warning appears when
building the binary:

    [CC]     common/help.o
common/help.c: In function ‘usage’:
common/help.c:315:58: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
  315 |                 fprintf(outf, "No short description for '%s'\n", token);
      |                                                          ^~
common/help.c:312:46: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
  312 |                 fprintf(outf, "No usage for '%s'\n", token);
      |                                              ^~

This happens for usage() which passes NULL pointer as token. Normally
this is fine, as fprintf() will output "(null)" for the NULL pointer,
but it's still not ideal.

Fix the warning by changing the token to "" if it's NULL.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
 		2024-11-08 18:27:30 +01:00
..
array.c btrfs-progs: run codespell throughout fixing typos automagically 2024-07-30 19:56:08 +02:00
array.h
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box.h
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clear-cache.c btrfs-progs: fix a false failure for inode cache cleanup 2024-09-17 14:33:22 +02:00
clear-cache.h
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cpu-utils.c
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cpu-utils.h
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defs.h
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device-scan.c btrfs-progs: rename and move __strncpy_null to string-utils 2024-06-24 19:18:46 +02:00
device-scan.h btrfs-progs: replace btrfs_open_dir with btrfs_open_dir_fd 2024-02-20 11:40:08 +01:00
device-utils.c btrfs-progs: support byte length for zone resetting 2024-06-03 21:26:39 +02:00
device-utils.h btrfs-progs: convert defined constants to enums 2024-02-08 08:30:37 +01:00
extent-cache.c btrfs-progs: make all parameters of rb_tree search/insert const 2024-03-12 21:43:54 +01:00
extent-cache.h
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extent-tree-utils.c btrfs-progs: reorder key initializations 2024-04-30 21:49:15 +02:00
extent-tree-utils.h
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filesystem-utils.c btrfs-progs: open the devices exclusively for writes 2024-09-17 14:33:22 +02:00
filesystem-utils.h
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format-output.c btrfs-progs: properly close va_copy in fmt_set_unquoted() 2024-04-18 19:16:15 +02:00
format-output.h
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fsfeatures.c btrfs-progs: move RST back to experimental 2024-06-24 19:18:32 +02:00
fsfeatures.h btrfs-progs: convert: remove raid-stripe-tree support 2024-06-24 19:18:25 +02:00
help.c btrfs-progs: fix compiler warning when usage string is NULL 2024-11-08 18:27:30 +01:00
help.h
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inject-error.c
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inject-error.h
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internal.h
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messages.c btrfs-progs: handle write errors in btrfs_add_to_fsid() 2024-03-16 22:25:50 +01:00
messages.h btrfs-progs: add uClibc-ng compatibility for printf format %pV 2024-07-30 19:53:33 +02:00
open-utils.c btrfs-progs: use strncpy_null everywhere 2024-06-24 19:18:48 +02:00
open-utils.h btrfs-progs: rename btrfs_open_fd2() to btrfs_open_path() 2024-02-20 12:59:29 +01:00
parse-utils.c btrfs-progs: implement arg_strtou64_with_suffix() with a new helper 2024-01-18 02:14:23 +01:00
parse-utils.h btrfs-progs: implement arg_strtou64_with_suffix() with a new helper 2024-01-18 02:14:23 +01:00
path-utils.c btrfs-progs: rename and move __strncpy_null to string-utils 2024-06-24 19:18:46 +02:00
path-utils.h btrfs-progs: rename and move __strncpy_null to string-utils 2024-06-24 19:18:46 +02:00
rbtree-utils.c btrfs-progs: make all parameters of rb_tree search/insert const 2024-03-12 21:43:54 +01:00
rbtree-utils.h btrfs-progs: make all parameters of rb_tree search/insert const 2024-03-12 21:43:54 +01:00
root-tree-utils.c btrfs-progs: mkfs: add ro flag to --subvol 2024-11-08 17:00:08 +01:00
root-tree-utils.h btrfs-progs: mkfs: add ro flag to --subvol 2024-11-08 17:00:08 +01:00
send-stream.c btrfs-progs: run codespell throughout fixing typos automagically 2024-07-30 19:56:08 +02:00
send-stream.h
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send-utils.c btrfs-progs: move uuid-tree definitions to kernel-shared/uuid-tree.h 2024-07-30 20:01:59 +02:00
send-utils.h
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sort-utils.c btrfs-progs: run codespell throughout fixing typos automagically 2024-07-30 19:56:08 +02:00
sort-utils.h btrfs-progs: run codespell throughout fixing typos automagically 2024-07-30 19:56:08 +02:00
string-table.c btrfs-progs: string-table: fix memory leak on exit path in table_vprintf() 2024-04-18 19:16:15 +02:00
string-table.h
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string-utils.c btrfs-progs: factor string escaping helpers from receive dump 2024-07-30 19:53:33 +02:00
string-utils.h btrfs-progs: factor string escaping helpers from receive dump 2024-07-30 19:53:33 +02:00
sysfs-utils.c
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sysfs-utils.h
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task-utils.c
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task-utils.h
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tree-search.h btrfs-progs: add API for selecting tree search support and ioctl 2024-03-16 18:08:38 +01:00
units.c
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units.h
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utils.c btrfs-progs: reorder key initializations 2024-04-30 21:49:15 +02:00
utils.h
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