Postpone termination exceptions in debug scope.

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index d99e6f54970accfd5b05e1aaea2afe3b10f42e68..3bd84021c50e121822f49f5184265a8581238307 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -3047,9 +3047,12 @@ void Debug::ProcessDebugMessages(bool debug_command_only) {
 }
 
 
-DebugScope::DebugScope(Debug* debug) : debug_(debug),
-                                       prev_(debug->debugger_entry()),
-                                       save_(debug_->isolate_) {
+DebugScope::DebugScope(Debug* debug)
+    : debug_(debug),
+      prev_(debug->debugger_entry()),
+      save_(debug_->isolate_),
+      no_termination_exceptons_(debug_->isolate_,
+                                StackGuard::TERMINATE_EXECUTION) {
   // Link recursive debugger entry.
   debug_->thread_local_.current_debug_scope_ = this;