nobu	2011-07-29 23:53:51 +0900 (Fri, 29 Jul 2011)

  New Revision: 32740

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=32740

  Log:
    * array.c (rb_ary_set_len): new function to set array length.
    * vm_eval.c (method_missing): set the length of argv array, to mark
      arguments.

  Modified files:
    trunk/ChangeLog
    trunk/array.c
    trunk/internal.h
    trunk/vm_eval.c

Index: array.c
===================================================================
--- array.c	(revision 32739)
+++ array.c	(revision 32740)
@@ -1310,6 +1310,21 @@
     }
 }
 
+void
+rb_ary_set_len(VALUE ary, long len)
+{
+    long capa;
+
+    rb_ary_modify_check(ary);
+    if (ARY_SHARED_P(ary)) {
+	rb_raise(rb_eRuntimeError, "can't set length of shared ");
+    }
+    if (len > (capa = (long)ARY_CAPA(ary))) {
+	rb_bug("probable buffer overflow: %ld for %ld", len, capa);
+    }
+    ARY_SET_LEN(ary, len);
+}
+
 /*!
  * expands or shrinks \a ary to \a len elements.
  * expanded region will be filled with Qnil.
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 32739)
+++ ChangeLog	(revision 32740)
@@ -1,5 +1,10 @@
-Fri Jul 29 23:53:44 2011  Nobuyoshi Nakada  <nobu@r...>
+Fri Jul 29 23:53:48 2011  Nobuyoshi Nakada  <nobu@r...>
 
+	* array.c (rb_ary_set_len): new function to set array length.
+
+	* vm_eval.c (method_missing): set the length of argv array, to mark
+	  arguments.
+
 	* vm_eval.c (rb_apply): get rid of too large alloca.
 
 Fri Jul 29 20:48:39 2011  Tanaka Akira  <akr@f...>
Index: vm_eval.c
===================================================================
--- vm_eval.c	(revision 32739)
+++ vm_eval.c	(revision 32740)
@@ -568,6 +568,7 @@
     }
     nargv[0] = ID2SYM(id);
     MEMCPY(nargv + 1, argv, VALUE, argc);
+    if (argv_ary) rb_ary_set_len(argv_ary, argc + 1);
 
     if (rb_method_basic_definition_p(CLASS_OF(obj) , idMethodMissing)) {
 	raise_method_missing(th, argc+1, nargv, obj, call_status | NOEX_MISSING);
Index: internal.h
===================================================================
--- internal.h	(revision 32739)
+++ internal.h	(revision 32740)
@@ -41,6 +41,7 @@
 
 /* array.c */
 VALUE rb_ary_last(int, VALUE *, VALUE);
+void rb_ary_set_len(VALUE, long);
 
 /* bignum.c */
 VALUE rb_big_fdiv(VALUE x, VALUE y);

--
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