diff options
Diffstat (limited to 'lib/getopt.c')
| -rw-r--r-- | lib/getopt.c | 54 |
1 files changed, 42 insertions, 12 deletions
diff --git a/lib/getopt.c b/lib/getopt.c index 4342a34..8ccb901 100644 --- a/lib/getopt.c +++ b/lib/getopt.c @@ -2,7 +2,7 @@ NOTE: getopt is part of the C library, so if you don't know what "Keep this file name-space clean" means, talk to drepper@gnu.org before changing it! - Copyright (C) 1987-1996, 1998-2004, 2006, 2008-2012 Free Software + Copyright (C) 1987-1996, 1998-2004, 2006, 2008-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -487,7 +487,20 @@ _getopt_internal_r (int argc, char **argv, const char *optstring, const struct option *p; struct option_list *next; } *ambig_list = NULL; +#ifdef _LIBC +/* malloc() not used for _LIBC to simplify failure messages. */ +# define free_option_list(l) +#else +# define free_option_list(l) \ + while (l != NULL) \ + { \ + struct option_list *pn = l->next; \ + free (l); \ + l = pn; \ + } +#endif int exact = 0; + int ambig = 0; int indfound = -1; int option_index; @@ -514,22 +527,37 @@ _getopt_internal_r (int argc, char **argv, const char *optstring, pfound = p; indfound = option_index; } + else if (ambig) + ; /* Taking simpler path to handling ambiguities. */ else if (long_only || pfound->has_arg != p->has_arg || pfound->flag != p->flag || pfound->val != p->val) { /* Second or later nonexact match found. */ +#ifdef _LIBC + struct option_list *newp = alloca (sizeof (*newp)); +#else struct option_list *newp = malloc (sizeof (*newp)); - newp->p = p; - newp->next = ambig_list; - ambig_list = newp; + if (newp == NULL) + { + free_option_list (ambig_list); + ambig_list = NULL; + ambig = 1; /* Use simpler fallback message. */ + } + else +#endif + { + newp->p = p; + newp->next = ambig_list; + ambig_list = newp; + } } } - if (ambig_list != NULL && !exact) + if ((ambig || ambig_list) && !exact) { - if (print_errors) + if (print_errors && ambig_list) { struct option_list first; first.p = pfound; @@ -585,18 +613,20 @@ _getopt_internal_r (int argc, char **argv, const char *optstring, fputc ('\n', stderr); #endif } + else if (print_errors && ambig) + { + fprintf (stderr, + _("%s: option '%s' is ambiguous\n"), + argv[0], argv[d->optind]); + } d->__nextchar += strlen (d->__nextchar); d->optind++; d->optopt = 0; + free_option_list (ambig_list); return '?'; } - while (ambig_list != NULL) - { - struct option_list *pn = ambig_list->next; - free (ambig_list); - ambig_list = pn; - } + free_option_list (ambig_list); if (pfound != NULL) { |