vm_insnhelper.c: fix missing reason

* vm_insnhelper.c (ci_missing_reason): return the reason of method
  missing in call info.
* vm_insnhelper.c (vm_call_opt_send): re-apply r49500 with the
  proper missing reason.  [Bug #10828]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Thu Feb  5 12:31:05 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* vm_insnhelper.c (ci_missing_reason): return the reason of method
+	  missing in call info.
+
+	* vm_insnhelper.c (vm_call_opt_send): re-apply r49500 with the
+	  proper missing reason.  [Bug #10828]
+
 Thu Feb  5 10:31:46 2015  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* class.c (rb_obj_singleton_methods): should use RTEST() to convert

test/-ext-/symbol/test_inadvertent_creation.rb

@@ -383,7 +383,7 @@ module Test_Symbol
       assert_no_immortal_symbol_created("send should not leak - str mm") do |name|
         assert_nothing_raised(NoMethodError) {x.send(name)}
       end
-    end if false
+    end
 
     def test_send_leak_symbol_custom_method_missing
       x = Object.new
@@ -391,7 +391,7 @@ module Test_Symbol
       assert_no_immortal_symbol_created("send should not leak - sym mm") do |name|
         assert_nothing_raised(NoMethodError) {x.send(name.to_sym)}
       end
-    end if false
+    end
 
     def test_send_leak_string_no_optimization
       assert_no_immortal_symbol_created("send should not leak - str slow") do |name|

vm_insnhelper.c

@@ -1497,6 +1497,19 @@ vm_call_bmethod(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
     return vm_call_bmethod_body(th, ci, argv);
 }
 
+static int
+ci_missing_reason(const rb_call_info_t *ci)
+{
+    int stat = 0;
+    if (ci->flag & VM_CALL_VCALL) {
+	stat |= NOEX_VCALL;
+    }
+    if (ci->flag & VM_CALL_SUPER) {
+	stat |= NOEX_SUPER;
+    }
+    return stat;
+}
+
 static
 #ifdef _MSC_VER
 __forceinline
@@ -1531,16 +1544,18 @@ vm_call_opt_send(rb_thread_t *th, rb_control_frame_t *reg_cfp, rb_call_info_t *c
 	    VALUE exc = make_no_method_exception(rb_eNoMethodError, NULL, ci->recv, rb_long2int(ci->argc), &TOPN(i));
 	    rb_exc_raise(exc);
 	}
-	ci->mid = rb_to_id(sym);
+	ci->mid = idMethodMissing;
+	th->method_missing_reason = ci->aux.missing_reason = ci_missing_reason(ci);
     }
-
-    /* shift arguments */
-    if (i > 0) {
-	MEMMOVE(&TOPN(i), &TOPN(i-1), VALUE, i);
+    else {
+	/* shift arguments */
+	if (i > 0) {
+	    MEMMOVE(&TOPN(i), &TOPN(i-1), VALUE, i);
+	}
+	ci->argc -= 1;
+	DEC_SP(1);
     }
     ci->me = rb_method_entry_without_refinements(CLASS_OF(ci->recv), ci->mid, &ci->defined_class);
-    ci->argc -= 1;
-    DEC_SP(1);
 
     ci->flag = VM_CALL_FCALL | VM_CALL_OPT_SEND;
 
@@ -1785,13 +1800,7 @@ vm_call_method(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
     }
     else {
 	/* method missing */
-	int stat = 0;
-	if (ci->flag & VM_CALL_VCALL) {
-	    stat |= NOEX_VCALL;
-	}
-	if (ci->flag & VM_CALL_SUPER) {
-	    stat |= NOEX_SUPER;
-	}
+	const int stat = ci_missing_reason(ci);
 	if (ci->mid == idMethodMissing) {
 	    rb_control_frame_t *reg_cfp = cfp;
 	    VALUE *argv = STACK_ADDR_FROM_TOP(ci->argc);