When the '-t DIR' option is used the loop over the remaining
arguments should terminate when a NULL pointer is reached.
function old new delta
mv_main 585 590 +5
cp_main 492 496 +4
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 9/0) Total: 9 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Testcase:
21 01 01 00 00 00 00 00 e7 01 01 01 ef 00 df b6
00 17 02 10 11 0f ff 00 16 00 00
Unfortunately, the bug is not reliably causing a segfault,
the behavior depends on what's in memory before the buffer.
function old new delta
unpack_lzma_stream 2762 2768 +6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The command 'nl -b n' should output no line numbers, just some
spaces as a placeholder followed by the actual file content.
Add tests for line numbering by cat and nl. The correct results
were obtained from coreutils.
function old new delta
print_numbered_lines 152 157 +5
.rodata 182456 182453 -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 5/-3) Total: 2 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Treat the output of printf as binary rather than a null-terminated
string so that NUL characters can be output.
This is considered to be a GNU extension, though it's also available
in mawk and FreeBSD's awk.
function old new delta
evaluate 3487 3504 +17
awk_printf 504 519 +15
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 32/0) Total: 32 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
If we have a square, the speedup can be extremely large
(in best case example below, it's ~40000 times faster):
$ time ./busybox_old factor 18446743988964486098
18446743988964486098: 2 3037000493 3037000493
real 0m4.246s
$ time ./busybox factor 18446743988964486098
18446743988964486098: 2 3037000493 3037000493
real 0m0.000s
function old new delta
isqrt_odd - 57 +57
print_w - 36 +36
factorize 218 236 +18
print_h - 7 +7
factorize_numstr 65 72 +7
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(add/remove: 3/0 grow/shrink: 2/0 up/down: 125/0) Total: 125 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This is a recent change in GNU grep as well (after 3.1)
function old new delta
grep_file 1215 1228 +13
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Prior to the patch, both -f and --first-only are in all cases either
no-op or ignored.
Without --tabs, --first-only is the default so specifying it is a no-op.
With --tabs, --all is implied, and --first-only is intended to reset this.
function old new delta
expand_main 690 694 +4
Signed-off-by: Mark Edgar <medgar123@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
From POSIX.1-2008:
The pattern_list's value shall consist of one or more patterns
separated by <newline> characters;
As such, given patterns need to be split at newline characters. Without
doing so, busybox grep will interpret the newline as part of the pattern
which is not in accordance with POSIX.
See also: https://bugs.busybox.net/show_bug.cgi?id=12721
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Grep currently special-cased empty pattern file to be the same as
pattern file with one empty line (empty pattern). That does mirror how
GNU grep behaves, except when -x is provided. In that case .* pattern
needs to be used instead.
Signed-off-by: Gray Wolf <wolf@wolfsden.cz>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Since commit 1ff7002b1 (xargs: fix handling of quoted arguments, closes
11441) the -n option hasn't worked properly:
$ echo 1 2 3 | xargs -n 1 echo
1
2
3
$
Because state is now remembered between calls to process_stdin() it's
necessary to update the state before any premature return.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
As reported in bug 11441 when presented with a large number of quoted
arguments xargs can return 'argument line too long':
seq 10000 29999 | sed -e 's/^/"/' -e 's/$/"/' | busybox xargs echo
This happens because the variant of process_stdin() which handles quoted
arguments doesn't preserve state between calls. If the allowed number
of characters is exceeded part way through a quoted argument the next
call to process_stdin() incorrectly treats the terminating quote as a
starting quote, thus quoting all of the argument separators.
function old new delta
process_stdin 274 303 +29
xargs_main 731 745 +14
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 43/0) Total: 43 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
function old new delta
xc_program_print 712 735 +23
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
function old new delta
zxc_vm_process 6884 6891 +7
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This matches the behaviour of both GNU dc (as specified in
its man page), and BSD dc (where stack_popstring() pops
only if the head is a string.)
Add a couple of tests to verify this behavior.
function old new delta
zxc_vm_process 6882 6884 +2
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
We found out that busybox -x -v is a bit broken:
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -e 'aa.*' -e '.*bb.*'
aa bb cc
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -v -e 'aa.*' -e '.*bb.*'
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -e '.*aa.*' -e 'bb.*'
aa bb cc
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -v -e '.*aa.*' -e 'bb.*'
aa bb cc
Last one is wrong.
This patch fixes the issue by making sure that the variable 'found'
never makes a transition from 1 to 0, as this would mean that
grep previously found a match on this input line.
Signed-off-by: Ari Sundholm <ari@tuxera.com>
Signed-off-by: Niko Vähäsarja <niko@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Unlike exit and return, delete strictly requires an arg, and derefs a
null pointer if executed without one.
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Avoids an uninit pointer deref for some malformed ternary exprs.
Add a test that would crash in busybox before this fix.
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This removes DAEMON_DOUBLE_FORK flag from bb_daemonize_or_rexec(),
as SSD was the only user.
Also includes fix for -S: now works without -a and -x,
does not print pids
(compat with "start-stop-daemon (OpenRC) 0.34.11 (Gentoo Linux)").
function old new delta
start_stop_daemon_main 1018 1084 +66
add_interface 99 103 +4
fail_hunk 139 136 -3
bb_daemonize_or_rexec 205 183 -22
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 70/-25) Total: 45 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
It is misplaced: caller knows better what can or cannot follow the expression.
Sometimes even caller's caller: "if (1) return a+b else..." -
parser of "return" does not know that "else" after it is valid,
parser of stmt does not know it either, - only parser of
"if" knows it!
The removed code balked on e.g. "{ print 1 }" statement.
This does not break any valid programs, but starts accepting some
invalid ones, e.g. "print 1 print 2" would work.
function old new delta
zcommon_parse_expr 40 32 -8
zbc_parse_name 509 494 -15
zbc_parse_stmt_possibly_auto 1678 1638 -40
bc_parse_expr_empty_ok 2025 1977 -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-111) Total: -111 bytes
text data bss dec hex filename
981599 485 7296 989380 f18c4 busybox_old
981488 485 7296 989269 f1855 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The entire control construct (if/while/for/funcdef) or {} block is
"eaten" by the corresponding parsing function, instead of maintaining
special "block flag stack" with magic bits in it, and returning to main
input loop after every inner statement (every input line, essentially).
This required moving line input deep into lexer - now zbc_lex_next()
triggers more reading when needed.
"block flag stack" is gone.
Correctness of ^C handling wasn't checked, might need fixing now.
if/else syntax is changed to match GNU bc: "else" can not be on
the next line (the rationale is that "if (1) 2" statement in interactive
mode should execute and print 2 instead of waiting for possible
"else ..." line).
This change fixes the following examples:
if (1) if (1) 1 else 2 else 3
if (0) 1 else if (1) 2
define w() { auto z; return 1; }
function old new delta
zbc_parse_stmt_possibly_auto - 2232 +2232
zbc_vm_process 89 561 +472
zbc_lex_next 1982 2296 +314
bc_vm_init 749 757 +8
bc_parse_expr_empty_ok 2016 2021 +5
bc_num_printNewline 54 51 -3
zbc_program_read 289 280 -9
bc_parse_free 47 38 -9
bc_parse_reset 126 113 -13
bc_parse_create 108 92 -16
bc_parse_push_block_flag 47 - -47
bc_parse_noElse 48 - -48
zbc_parse_text_init 113 59 -54
zbc_parse_body 121 - -121
zbc_parse_else 125 - -125
zbc_parse_endBody 254 - -254
bc_vm_run 421 134 -287
zbc_parse_auto 290 - -290
zcommon_parse 476 - -476
zbc_parse_stmt 1682 7 -1675
------------------------------------------------------------------------------
(add/remove: 1/7 grow/shrink: 4/8 up/down: 3031/-3427) Total: -396 bytes
text data bss dec hex filename
982586 485 7296 990367 f1c9f busybox_old
982138 485 7296 989919 f1adf busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The '-t' option for od is enabled by CONFIG_DESKTOP. So
check this config before using 'od -t' in test cases.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Thanks to Cristian Ionescu-Idbohrn for noticing.
Also fix "%d" ' 42' to skip leading whitespace.
function old new delta
print_direc 435 454 +19
bb_strtoll 99 103 +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 23/0) Total: 23 bytes
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Commit 2da9724b56 broke 'head -n -1' and was
later reverted with 0d598ab9f0.
This commit adds a test case to avoid future breakage.
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko
Rob Landley
Ron Yorston
Rafał Miłecki
Mark Edgar
Sören Tempel
Gray Wolf
Brian Foley
Chen Qi
Ari Sundholm
Bernhard Reutner-Fischer
Thomas De Schampheleire