avoid using strok - eliminates use of hidden global variable

function                                             old     new   delta
udhcp_str2optset                                     616     650     +34
setpriv_main                                         950     975     +25
switch_root_main                                     688     706     +18
parse                                                958     970     +12
getopt_main                                          622     628      +6
parse_resolvconf                                     302     306      +4
mpstat_main                                         1139    1142      +3
static.p                                               4       -      -4
cdcmd                                                717     702     -15
strtok                                               148       -    -148
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 7/1 up/down: 102/-167)          Total: -65 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/util-linux/getopt.c b/util-linux/getopt.c
index db7db6ff8..1fa402429 100644
--- a/util-linux/getopt.c
+++ b/util-linux/getopt.c
@@ -289,12 +289,13 @@ static struct option *add_long_options(struct option *long_options, char *option
 {
         int long_nr = 0;
         int arg_opt, tlen;
-        char *tokptr = strtok(options, ", \t\n");
+        char *tokptr;
 
         if (long_options)
                 while (long_options[long_nr].name)
                         long_nr++;
 
+        tokptr = strtok_r(options, ", \t\n", &options);
         while (tokptr) {
                 arg_opt = no_argument;
                 tlen = strlen(tokptr);
@@ -318,7 +319,7 @@ static struct option *add_long_options(struct option *long_options, char *option
                         long_nr++;
                         /*memset(&long_options[long_nr], 0, sizeof(long_options[0])); - xrealloc_vector did it */
                 }
-                tokptr = strtok(NULL, ", \t\n");
+                tokptr = strtok_r(NULL, ", \t\n", &options);
         }
         return long_options;
 }