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comparison: js/jsd/test/test_jsval_retval.js
js/jsd/test/test_jsval_retval.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:2e4a2b0300b2 |
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| 1 // Bug 689101 - if the binary layout of jsval does not match between C and C++ | |
| 2 // code, then calls to functions returning jsval may get compiled differently | |
| 3 // than the callee, resulting in parameters being shifted over by one. | |
| 4 // | |
| 5 // An example is where on Windows, calling jsdValue.getWrappedValue() will | |
| 6 // return a random floating point number instead of an object. | |
| 7 // | |
| 8 // This test must be run with debugging already enabled | |
| 9 | |
| 10 function run_test() { | |
| 11 const Cc = Components.classes; | |
| 12 const Ci = Components.interfaces; | |
| 13 const DebuggerService = Cc["@mozilla.org/js/jsd/debugger-service;1"]; | |
| 14 const jsdIDebuggerService = Ci.jsdIDebuggerService; | |
| 15 var jsd = DebuggerService.getService(jsdIDebuggerService); | |
| 16 | |
| 17 do_check_true(jsd.isOn); | |
| 18 | |
| 19 var n = 0; | |
| 20 function f() { | |
| 21 n++; | |
| 22 } | |
| 23 | |
| 24 jsd.enumerateScripts({ enumerateScript: function(script) { | |
| 25 script.setBreakpoint(0); | |
| 26 } }); | |
| 27 | |
| 28 jsd.breakpointHook = function(frame, type, dummy) { | |
| 29 var scope = frame.scope; | |
| 30 var parent = scope.jsParent; // Probably does not need to be called | |
| 31 var wrapped = scope.getWrappedValue(); | |
| 32 // Do not try to print 'wrapped'; it may be an internal Call object | |
| 33 // that will crash when you toString it. Different bug. | |
| 34 do_check_eq(typeof(wrapped), "object"); | |
| 35 return Ci.jsdIExecutionHook.RETURN_CONTINUE; | |
| 36 }; | |
| 37 | |
| 38 f(); | |
| 39 | |
| 40 jsd.breakpointHook = null; | |
| 41 jsd = null; | |
| 42 } |
