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PR bin/50896: make shift with more than 1 arg give a usage message, from kre

This commit is contained in:
christos 2016-03-08 14:08:39 +00:00
parent 9da4c9a5be
commit bff14f8dfa
1 changed files with 6 additions and 3 deletions
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9
bin/sh/options.c
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@ -1,4 +1,4 @@
/* $NetBSD: options.c,v 1.44 2016/02/24 14:38:40 christos Exp $ */ /* $NetBSD: options.c,v 1.45 2016/03/08 14:08:39 christos Exp $ */
/*- /*-
* Copyright (c) 1991, 1993 * Copyright (c) 1991, 1993
@ -37,7 +37,7 @@
#if 0 #if 0
static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 5/4/95"; static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 5/4/95";
#else #else
__RCSID("$NetBSD: options.c,v 1.44 2016/02/24 14:38:40 christos Exp $"); __RCSID("$NetBSD: options.c,v 1.45 2016/03/08 14:08:39 christos Exp $");
#endif #endif
#endif /* not lint */ #endif /* not lint */
@ -335,6 +335,8 @@ shiftcmd(int argc, char **argv)
int n; int n;
char **ap1, **ap2; char **ap1, **ap2;
if (argc > 2)
error("Usage: shift [n]");
n = 1; n = 1;
if (argc > 1) if (argc > 1)
n = number(argv[1]); n = number(argv[1]);
@ -347,7 +349,8 @@ shiftcmd(int argc, char **argv)
ckfree(*ap1); ckfree(*ap1);
} }
ap2 = shellparam.p; ap2 = shellparam.p;
while ((*ap2++ = *ap1++) != NULL); while ((*ap2++ = *ap1++) != NULL)
continue;
shellparam.optnext = NULL; shellparam.optnext = NULL;
INTON; INTON;
return 0; return 0;