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getopt: fix null pointer arithmetic ub
[musl]
/
src
/
misc
/
getopt.c
diff --git
a/src/misc/getopt.c
b/src/misc/getopt.c
index
c3f6699
..
b02b81c
100644
(file)
--- a/
src/misc/getopt.c
+++ b/
src/misc/getopt.c
@@
-87,7
+87,8
@@
int getopt(int argc, char * const argv[], const char *optstring)
if (optstring[i] == ':') {
optarg = 0;
if (optstring[i+1] != ':' || optpos) {
- optarg = argv[optind++] + optpos;
+ optarg = argv[optind++];
+ if (optpos) optarg += optpos;
optpos = 0;
}
if (optind > argc) {