* insns.def (opt_regexpmatch1): check Regexp#=~ is not defined before

  calling rb_reg_match()

* test/ruby/test_regexp.rb: add test

* vm.c (ruby_vm_redefined_flag): change type to short[]

* vm.c (vm_redefinition_check_flag): return REGEXP_REDEFINED_OP_FLAG if
  klass == rb_cRegexp

* vm.c (vm_init_redefined_flag): setup BOP flag for Regexp#=~

* vm_insnhelper.h: add REGEXP_REDEFINED_OP_FLAG

[ruby-core:57385] [Bug #8953]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/insns.def b/insns.def
index 53e22223cd..a73501f245 100644
--- a/insns.def
+++ b/insns.def
@@ -2080,7 +2080,11 @@ opt_regexpmatch1
 (VALUE obj)
 (VALUE val)
 {
-    val = rb_reg_match(r, obj);
+    if (BASIC_OP_UNREDEFINED_P(BOP_MATCH, REGEXP_REDEFINED_OP_FLAG)) {
+	val = rb_reg_match(r, obj);
+    } else {
+	val = rb_funcall(r, idEqTilde, 1, obj);
+    }
 }
 
 /**