Breakpoint position should be inside function body.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 4063a0fc7d751aa86c4fd47ab46b2e1e9d05bcf9..4b14643952d4dcce07a6d149555f4d7d52df1595 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -9387,13 +9387,6 @@ static Object* Runtime_SetScriptBreakPoint(Arguments args) {
     }
     Debug::SetBreakPoint(shared, break_point_object_arg, &position);
     position += shared->start_position();
-
-    // The result position may become beyond script source end.
-    // This is expected when the function is toplevel. This may become
-    // a problem later when actual position gets converted into line/column.
-    if (shared->is_toplevel() && position == shared->end_position()) {
-      position = shared->end_position() - 1;
-    }
     return Smi::FromInt(position);
   }
   return  Heap::undefined_value();