[hackers] [ii] don't modify argv, use a counter || Hiltjo Posthuma

[git]

commit 31b2445000b7f5f88e363f85de1e70e91c2adbaf
Author:     Hiltjo Posthuma <hil...@codemadness.org>
AuthorDate: Sat Nov 18 12:35:33 2017 +0100
Commit:     Hiltjo Posthuma <hil...@codemadness.org>
CommitDate: Sat Nov 18 12:35:33 2017 +0100

    don't modify argv, use a counter
    
    on some platforms (OpenBSD) this changes the exposed argv in tools
    using the kvm_* interface, such as ps and pgrep.

diff --git a/arg.h b/arg.h
index e94e02b..fe4d7e5 100644
--- a/arg.h
+++ b/arg.h
@@ -21,12 +21,13 @@ extern char *argv0;
                                        argc--;\
                                        break;\
                                }\
-                               for (brk_ = 0, argv[0]++, argv_ = argv;\
-                                               argv[0][0] && !brk_;\
-                                               argv[0]++) {\
+                               int i_;\
+                               for (i_ = 1, brk_ = 0, argv_ = argv;\
+                                               argv[0][i_] && !brk_;\
+                                               i_++) {\
                                        if (argv_ != argv)\
                                                break;\
-                                       argc_ = argv[0][0];\
+                                       argc_ = argv[0][i_];\
                                        switch (argc_)
 
 #define ARGEND                 }\