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Issue 8050010: Support for precise stepping in functions compiled before debugging was started (step 2) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Fixed missing comment Created 9 years, 2 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 // Flags: --expose-debug-as debug
29
30 // This test tests that full code compiled without debug break slots
31 // is recompiled with debug break slots when debugging is started.
32
33 // Get the Debug object exposed from the debug context global object.
34 Debug = debug.Debug
35
36 var bp;
37 var done = false;
38 var step_count = 0;
39 var set_bp = false
40
41 // Debug event listener which steps until the global variable done is true.
42 function listener(event, exec_state, event_data, data) {
43 if (event == Debug.DebugEvent.Break) {
44 if (!done) exec_state.prepareStep(Debug.StepAction.StepNext);
45 step_count++;
46 }
47 };
48
49 // Set the global variables state to prpare the stepping test.
50 function prepare_step_test() {
51 done = false;
52 step_count = 0;
53 }
54
55 // Test function to step through.
56 function f() {
57 var a = 0;
58 if (set_bp) { bp = Debug.setBreakPoint(f, 3); }
59 var i = 1;
60 var j = 2;
61 done = true;
62 };
63
64 prepare_step_test();
65 f();
66
67 // Add the debug event listener.
68 Debug.setListener(listener);
69
70 // Make f set a breakpoint with an activation on the stack.
71 prepare_step_test();
72 set_bp = true;
73 f();
74 assertEquals(4, step_count);
75 Debug.clearBreakPoint(bp);
76
77 // Set a breakpoint on the first var statement (line 1).
78 set_bp = false;
79 bp = Debug.setBreakPoint(f, 3);
80
81 // Step through the function ensuring that the var statements are hit as well.
82 prepare_step_test();
83 f();
84 assertEquals(4, step_count);
85
86 // Clear the breakpoint and check that no stepping happens.
87 Debug.clearBreakPoint(bp);
88 prepare_step_test();
89 f();
90 assertEquals(0, step_count);
91
92 // Get rid of the debug event listener.
93 Debug.setListener(null);
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