* process.c (rb_exec_fillarg): check use_shell field before accessing

a union field.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Jun  6 05:27:54 2012  Tanaka Akira  <akr@fsij.org>
+
+	* process.c (rb_exec_fillarg): check use_shell field before accessing
+	  a union field.
+
 Wed Jun  6 04:58:44 2012  Tanaka Akira  <akr@fsij.org>
 
 	* process.c (rb_spawn_process): prog variable is not used for Unix.

process.c

@@ -1830,7 +1830,7 @@ rb_exec_fillarg(VALUE prog, int argc, VALUE *argv, VALUE env, VALUE opthash, str
         e->invoke.cmd.argv_buf = argv_buf;
     }
 
-    if (e->invoke.cmd.argv_buf) {
+    if (!e->use_shell) {
         char *p, *ep, *null=NULL;
         VALUE argv_str;
         argv_str = hide_obj(rb_str_buf_new(sizeof(char*) * (argc + 2)));