* vm_insnhelper.c (vm_call_method): disable CI_SET_FASTPATH() if

  this method call needs splat argument because cahced functions
  (vm_call_attrset, vm_call_ivar, vm_call_cfunc_fast_(unary|binary))
  do not check an arity.
* bootstraptest/test_method.rb: add a test to check an above issue.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37199 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/bootstraptest/test_method.rb b/bootstraptest/test_method.rb
index 2baf33539d..d6b8c0ea24 100644
--- a/bootstraptest/test_method.rb
+++ b/bootstraptest/test_method.rb
@@ -1184,3 +1184,23 @@ assert_equal 'ok', %q{
   'ok'
 }, '[ruby-core:30534]'
 
+# should not cache when splat
+assert_equal 'ok', %q{
+  class C
+    attr_reader :a
+    def initialize
+      @a = 1
+    end
+  end
+
+  def m *args
+    C.new.a(*args)
+  end
+
+  m()
+  begin
+    m(1)
+  rescue ArgumentError
+    'ok'
+  end
+}