merge revision(s) r46465,r46469,r46484: [Backport #9961]
* vm.c (rb_vm_rewind_cfp): add new function to rewind specified cfp with invoking RUBY_EVENT_C_RETURN. [Bug #9961] * vm_core.h: ditto. * eval.c (rb_protect): use it. * eval.c (rb_rescue2): ditto. * vm_eval.c (rb_iterate): ditto. * test/ruby/test_settracefunc.rb: add a test. * vm_core.h (rb_name_err_mesg_new): * vm_eval.c (rb_catch_protect): fix same problem of [Bug #9961]. * vm_eval.c (rb_iterate): ditto. * vm_core.h (rb_vm_rewind_cfp): add the prototype declaration.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r46465,r46469,r46484: [Backport #9961]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e