* 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, 3 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index 3c50daa2fe..d647ab4a2a 100644
--- a/vm.c
+++ b/vm.c
@@ -99,7 +99,7 @@ VALUE rb_cEnv;
 VALUE rb_mRubyVMFrozenCore;
 
 VALUE ruby_vm_const_missing_count = 0;
-char ruby_vm_redefined_flag[BOP_LAST_];
+short ruby_vm_redefined_flag[BOP_LAST_];
 rb_thread_t *ruby_current_thread = 0;
 rb_vm_t *ruby_current_vm = 0;
 rb_event_flag_t ruby_vm_event_flags;
@@ -1016,6 +1016,7 @@ vm_redefinition_check_flag(VALUE klass)
     if (klass == rb_cBignum) return BIGNUM_REDEFINED_OP_FLAG;
     if (klass == rb_cSymbol) return SYMBOL_REDEFINED_OP_FLAG;
     if (klass == rb_cTime)   return TIME_REDEFINED_OP_FLAG;
+    if (klass == rb_cRegexp) return REGEXP_REDEFINED_OP_FLAG;
     return 0;
 }
 
@@ -1094,6 +1095,7 @@ vm_init_redefined_flag(void)
     OP(Size, SIZE), (C(Array), C(String), C(Hash));
     OP(EmptyP, EMPTY_P), (C(Array), C(String), C(Hash));
     OP(Succ, SUCC), (C(Fixnum), C(String), C(Time));
+    OP(EqTilde, MATCH), (C(Regexp));
 #undef C
 #undef OP
 }