setproctitle.c: _NSGetEnviron

* missing/setproctitle.c (environ): use (*_NSGetEnviron()) instead of
  environ on Darwin for namespace cleanness, same as [ruby-core:00537].
  [ruby-core:45615] [Bug #6576]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36151 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Wed Jun 20 16:36:14 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* missing/setproctitle.c (environ): use (*_NSGetEnviron()) instead of
+	  environ on Darwin for namespace cleanness, same as [ruby-core:00537].
+	  [ruby-core:45615] [Bug #6576]
+
 Wed Jun 20 11:33:04 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* process.c (rb_execarg_addopt): always make Fixnum, and ignore higher

missing/setproctitle.c

@@ -48,6 +48,12 @@
 #endif
 #include <string.h>
 
+#if defined(__APPLE__)
+#include <crt_externs.h>
+#undef environ
+#define environ (*_NSGetEnviron())
+#endif
+
 #define SPT_NONE	0	/* don't use it at all */
 #define SPT_PSTAT	1	/* use pstat(PSTAT_SETCMD, ...) */
 #define SPT_REUSEARGV	2	/* cover argv with title information */