* proc.c (rb_binding_new_with_cfp): permit to create binding object

  of IFUNC frame.
  When `rb_binding_new_with_cfp()' is called, VM finds out the first
  normal (has iseq) frame and create a binding object of this frame
  and create Env objects. `ep's of related frames are updated
  (`ep's point Env object managed spaces).
  However, `ep' of skipped IFUNC frame was not updated and
  old invalid `ep' was remained. It causes serious problems.
  To solve this issue, permit IFUNC to create binding.
  (Maybe there is no problem on it)
  [ruby-dev:46908] [ruby-trunk - Bug #7774]
* test/ruby/test_settracefunc.rb: add a test.
* vm.c (rb_vm_get_binding_creatable_next_cfp), vm_core.h: added.
* vm_trace.c: fix to use `rb_vm_get_binding_creatable_next_cfp()'.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39067 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/vm.c b/vm.c
index c8f0a29187..698857ba33 100644
--- a/vm.c
+++ b/vm.c
@@ -186,6 +186,18 @@ vm_set_main_stack(rb_thread_t *th, VALUE iseqval)
 }
 
 rb_control_frame_t *
+rb_vm_get_binding_creatable_next_cfp(rb_thread_t *th, const rb_control_frame_t *cfp)
+{
+    while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
+	if (cfp->iseq) {
+	    return (rb_control_frame_t *)cfp;
+	}
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+    }
+    return 0;
+}
+
+rb_control_frame_t *
 rb_vm_get_ruby_level_next_cfp(rb_thread_t *th, const rb_control_frame_t *cfp)
 {
     while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {