Make VM debugger stop at every safe point

runtime/vm/debugger_api_impl_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/thread.h"
 #include "vm/unit_test.h"
 
@@ skipping 343 matching lines @@
 void TestStepIntoHandler(Dart_IsolateId isolate_id,
                          const Dart_CodeLocation& location) {
   Dart_StackTrace trace;
   Dart_GetStackTrace(&trace);
   const char* expected_bpts[] = {
       "main",
         "foo",
           "f1",
         "foo",
           "X.X.",
+          "X.X.",
         "foo",
           "X.kvmk",
             "f2",
           "X.kvmk",
+          "X.kvmk",
         "foo",
       "main"
   };
   const intptr_t expected_bpts_length = ARRAY_SIZE(expected_bpts);
   intptr_t trace_len;
   Dart_Handle res = Dart_StackTraceLength(trace, &trace_len);
   EXPECT_VALID(res);
   EXPECT(breakpoint_hit_counter < expected_bpts_length);
   Dart_ActivationFrame frame;
   res = Dart_GetActivationFrame(trace, 0, &frame);
@@ skipping 33 matching lines @@
       "  return o.kvmk(3, c:5); \n"
       "}                        \n"
       "                         \n"
       "main() {                 \n"
       "  return foo();          \n"
       "}                        \n";
 
   LoadScript(kScriptChars);
   Dart_SetPausedEventHandler(&TestStepIntoHandler);
 
-  // Set a breakpoint in function f1, then repeatedly step out until
-  // we get to main. We should see one breakpoint each in f1,
-  // foo, main, but not in f2.
   SetBreakpointAtEntry("", "main");
-
   breakpoint_hit = false;
   breakpoint_hit_counter = 0;
   Dart_Handle retval = Invoke("main");
   EXPECT_VALID(retval);
   EXPECT(Dart_IsInteger(retval));
   int64_t int_value = 0;
   Dart_IntegerToInt64(retval, &int_value);
   EXPECT_EQ(7, int_value);
   EXPECT(breakpoint_hit == true);
 }
@@ skipping 1088 matching lines @@
   breakpoint_hit_counter = 0;
   Dart_SetExceptionPauseInfo(kPauseOnAllExceptions);
 
   Dart_Handle retval = Invoke("main");
   EXPECT(Dart_IsError(retval));
   EXPECT(Dart_IsUnhandledExceptionError(retval));
   EXPECT_EQ(1, breakpoint_hit_counter);
 }
 
 }  // namespace dart