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27eae473bb
--HG-- extra : rebase_source : 6b1e37699e0556685b1ed88fa15ab380428b6ffa
43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
// Bug 689101 - if the binary layout of jsval does not match between C and C++
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// code, then calls to functions returning jsval may get compiled differently
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// than the callee, resulting in parameters being shifted over by one.
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//
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// An example is where on Windows, calling jsdValue.getWrappedValue() will
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// return a random floating point number instead of an object.
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//
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// This test must be run with debugging already enabled
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function run_test() {
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const DebuggerService = Cc["@mozilla.org/js/jsd/debugger-service;1"];
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const jsdIDebuggerService = Ci.jsdIDebuggerService;
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var jsd = DebuggerService.getService(jsdIDebuggerService);
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do_check_true(jsd.isOn);
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var n = 0;
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function f() {
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n++;
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}
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jsd.enumerateScripts({ enumerateScript: function(script) {
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script.setBreakpoint(0);
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} });
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jsd.breakpointHook = function(frame, type, dummy) {
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var scope = frame.scope;
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var parent = scope.jsParent; // Probably does not need to be called
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var wrapped = scope.getWrappedValue();
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// Do not try to print 'wrapped'; it may be an internal Call object
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// that will crash when you toString it. Different bug.
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do_check_eq(typeof(wrapped), "object");
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return Ci.jsdIExecutionHook.RETURN_CONTINUE;
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};
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f();
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jsd.breakpointHook = null;
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jsd = null;
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}
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