Enable lazy compilation for non-trivial outer contexts.

test/mjsunit/debug-script-breakpoints-closure.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --expose-debug-as debug
 // Get the Debug object exposed from the debug context global object.
 Debug = debug.Debug
 
-var script_number = 0;
-var script_names = [];
-var exception = null;
+// Simple debug event handler which just counts the number of break points hit.
+var break_point_hit_count = 0;
 
 function listener(event, exec_state, event_data, data) {
-  if (event == Debug.DebugEvent.BeforeCompile) {
-    event_data.script().setSource(event_data.script().source() +
-        " //@ sourceURL=proper_location_" + (++script_number));
-  } else if (event == Debug.DebugEvent.AfterCompile) {
-    try {
-      event_data.script().setSource("a=1 //@ sourceURL=wrong_location");
-    } catch(e) {
-      exception = e;
-    }
-    script_names.push(event_data.script().name());
+  if (event == Debug.DebugEvent.Break) {
+    break_point_hit_count++;
   }
 };
 
-
 // Add the debug event listener.
 Debug.setListener(listener);
 
-// Compile different sources.
-eval('a=1');
-eval('(function(){})');
+function makeClosure() {
+  var x;
+  return function() { 
+    return x;                // Breakpoint line ( #47 )
+  };
+}
 
-assertEquals(2, script_names.length);
-assertEquals("proper_location_1", script_names[0]);
-assertEquals("proper_location_2", script_names[1]);
+// Create closure before break point is set.
+var closure = makeClosure();
 
-assertEquals("illegal access", exception);
+// The debugger triggers re-compilation.
+assertEquals(0, Debug.scriptBreakPoints().length);
+var scr = Debug.findScript(makeClosure);
+var sbp = Debug.setScriptBreakPointById(scr.id, 47);
+assertEquals(1, Debug.scriptBreakPoints().length);
 
-Debug.setListener(null);
+// Ensure the closure actually triggers a break point hit.
+closure();
+assertEquals(1, break_point_hit_count);
+
+// Remove script break point.
+assertEquals(1, Debug.scriptBreakPoints().length);
+Debug.clearBreakPoint(sbp);
+assertEquals(0, Debug.scriptBreakPoints().length);