Bug 689101 - Test for firebug incompatibility due to jsval ABI mismatch (r=test)

--HG--
extra : rebase_source : b58acb6b58415e8f1954e46d094b9d6ad985efb1

js/jsd/Makefile.in

@@ -42,6 +42,7 @@ DEPTH		= ../..
 topsrcdir	= @top_srcdir@
 VPATH		= @srcdir@
 srcdir		= @srcdir@
+relativesrcdir  = js/jsd
 
 include $(DEPTH)/config/autoconf.mk
 
@@ -55,6 +56,7 @@ LIBXUL_LIBRARY = 1
 MODULE_NAME = JavaScript_Debugger
 EXPORT_LIBRARY = 1
 
+XPCSHELL_TESTS  = test
 
 # REQUIRES	= java js
 

js/jsd/test/test_jsval_retval.js

@@ -0,0 +1,39 @@
+// Bug 689101 - if the binary layout of jsval does not match between C and C++
+// code, then calls to functions returning jsval may get compiled differently
+// than the callee, resulting in parameters being shifted over by one.
+//
+// An example is where on Windows, calling jsdValue.getWrappedValue() will
+// return a random floating point number instead of an object.
+//
+// This test must be run with debugging already enabled
+
+function run_test() {
+    const Cc = Components.classes;
+    const Ci = Components.interfaces;
+    const DebuggerService = Cc["@mozilla.org/js/jsd/debugger-service;1"];
+    const jsdIDebuggerService = Ci.jsdIDebuggerService;
+    var jsd = DebuggerService.getService(jsdIDebuggerService);
+
+    do_check_true(jsd.isOn);
+
+    var n = 0;
+    function f() {
+        n++;
+    }
+
+    jsd.enumerateScripts({ enumerateScript: function(script) {
+        script.setBreakpoint(0);
+    } });
+
+    jsd.breakpointHook = function(frame, type, dummy) {
+        var scope = frame.scope;
+        var parent = scope.jsParent; // Probably does not need to be called
+        var wrapped = scope.getWrappedValue();
+        // Do not try to print 'wrapped'; it may be an internal Call object
+        // that will crash when you toString it. Different bug.
+        do_check_eq(typeof(wrapped), "object");
+        return Ci.jsdIExecutionHook.RETURN_CONTINUE;
+    };
+
+    f();
+}

js/jsd/test/xpcshell.ini

@@ -0,0 +1,6 @@
+[DEFAULT]
+head =
+tail =
+
+[test_jsval_retval.js]
+debug = 1

testing/xpcshell/xpcshell.ini

@@ -47,6 +47,7 @@ skip-if = os == "android"
 [include:netwerk/test/unit/xpcshell.ini]
 [include:netwerk/test/httpserver/test/xpcshell.ini]
 [include:js/ductwork/debugger/tests/xpcshell.ini]
+[include:js/jsd/test/xpcshell.ini]
 [include:js/jetpack/tests/unit/xpcshell.ini]
 [include:js/src/xpconnect/tests/unit/xpcshell.ini]
 [include:modules/libjar/test/unit/xpcshell.ini]