musl: fix getopt optional argument processing

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 43009

diff --git a/toolchain/musl/patches/110-getopt_optional_argument_fix.patch b/toolchain/musl/patches/110-getopt_optional_argument_fix.patch
new file mode 100644 (file)
index 0000000..7deebdc
--- /dev/null
+++ b/toolchain/musl/patches/110-getopt_optional_argument_fix.patch
@@ -0,0 +1,20 @@
+--- a/src/misc/getopt.c
++++ b/src/misc/getopt.c
+@@ -55,7 +55,9 @@ int getopt(int argc, char * const argv[]
+               return '?';
+       }
+       if (optstring[i+1] == ':') {
++              if (optstring[i+2] == ':') optarg = 0;
+               if (optind >= argc) {
++                      if (optstring[i+2] == ':') return c;
+                       if (optstring[0] == ':') return ':';
+                       if (opterr) {
+                               write(2, argv[0], strlen(argv[0]));
+@@ -65,7 +67,6 @@ int getopt(int argc, char * const argv[]
+                       }
+                       return '?';
+               }
+-              if (optstring[i+2] == ':') optarg = 0;
+               if (optstring[i+2] != ':' || optpos) {
+                       optarg = argv[optind++] + optpos;
+                       optpos = 0;