If fmt is NULL, ptitle is uninitialized and used.
SETPROCTITLE(3bsd) says "If fmt is NULL, the process title is restored",
but looks like the feature is not implemented in missing/setproctitle.c.
At least the source code of ruby does not pass NULL to the function.
So I assume this function requires non-NULL fmt.
This issue was found by Coverity Scan.
for darwin (this header is missing in the iOS SDK)
* eval_intern.h: check HAVE_CRT_EXTERNS_H before including crt_externs.h, if
not defined, include missing/crt_externs.h instead
* hash.c: ditto
* missing/setproctitle.c: ditto
* missing/crt_externs.h: declare _NSGetEnviron() function and define environ
for iOS
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38644 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 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
