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| author | Ingo van Lil <inguin@gmx.de> | 2018-01-05 15:04:23 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-01-07 14:22:38 +0100 |
| commit | 9c8e94bc0a3836dd6b8acbcf1fa88283a0a3c148 (patch) | |
| tree | 9f07ea59974e3863edef50f1a01047de729b2e3d /shell/ash.c | |
| parent | 6f4a785bd1bd0e6973b5c27b34b86655b1d7a602 (diff) | |
| download | busybox-9c8e94bc0a3836dd6b8acbcf1fa88283a0a3c148.tar.gz | |
ash: fail if 'shift' operand is out of range
If the numeric argument passed to ash's 'shift' built-in is greater than
'$#' the command performs no operation and exits successfully. It should
return a non-zero exit code instead:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#shift
This is consistent with bash and hush.
function old new delta
shiftcmd 122 120 -2
Signed-off-by: Ingo van Lil <inguin@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/ash.c')
| -rw-r--r-- | shell/ash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/shell/ash.c b/shell/ash.c index dfb7d4d8e..b73a79975 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -10858,7 +10858,7 @@ shiftcmd(int argc UNUSED_PARAM, char **argv) if (argv[1]) n = number(argv[1]); if (n > shellparam.nparam) - n = 0; /* bash compat, was = shellparam.nparam; */ + return 1; INT_OFF; shellparam.nparam -= n; for (ap1 = shellparam.p; --n >= 0; ap1++) { |