From 648498dd839d88ea6ce9889eb71e16ac9a42e988 Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@trolltech.com>
Date: Mon, 24 Aug 2009 10:34:57 +0200
Subject: Fix QScriptContext::argumentObjects for function called with
 QScriptValue::call

They have the hostCallFrameFlag, but are function context, not <eval> context
---
 src/script/api/qscriptcontext.cpp                |  9 ++++--
 tests/auto/qscriptcontext/tst_qscriptcontext.cpp | 35 ++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/src/script/api/qscriptcontext.cpp b/src/script/api/qscriptcontext.cpp
index 0b1ca33..6a85ede 100644
--- a/src/script/api/qscriptcontext.cpp
+++ b/src/script/api/qscriptcontext.cpp
@@ -305,8 +305,8 @@ QScriptValue QScriptContext::argumentsObject() const
 {
     JSC::CallFrame *frame = const_cast<JSC::ExecState*>(QScriptEnginePrivate::frameForContext(this));
 
-    if (frame == frame->lexicalGlobalObject()->globalExec() || frame->callerFrame()->hasHostCallFrameFlag()) {
-        // <global> or <eval> context doesn't have arguments.  return an empty object
+    if (frame == frame->lexicalGlobalObject()->globalExec()) {
+        // <global> context doesn't have arguments. return an empty object
         return QScriptEnginePrivate::get(QScript::scriptEngineFromExec(frame))->newObject();
     }
 
@@ -316,6 +316,11 @@ QScriptValue QScriptContext::argumentsObject() const
         return QScript::scriptEngineFromExec(frame)->scriptValueFromJSCValue(result);
     }
 
+    if (frame->callerFrame()->hasHostCallFrameFlag()) {
+        // <eval> context doesn't have arguments. return an empty object
+        return QScriptEnginePrivate::get(QScript::scriptEngineFromExec(frame))->newObject();
+    }
+
     //for a native function
     if (!frame->optionalCalleeArguments()) {
         Q_ASSERT(frame->argumentCount() > 0); //we need at least 'this' otherwise we'll crash later
diff --git a/tests/auto/qscriptcontext/tst_qscriptcontext.cpp b/tests/auto/qscriptcontext/tst_qscriptcontext.cpp
index a0c56ed..ef609e0 100644
--- a/tests/auto/qscriptcontext/tst_qscriptcontext.cpp
+++ b/tests/auto/qscriptcontext/tst_qscriptcontext.cpp
@@ -559,6 +559,11 @@ static QScriptValue custom_eval(QScriptContext *ctx, QScriptEngine *eng)
     return eng->evaluate(ctx->argumentsObject().property(0).toString(), ctx->argumentsObject().property(1).toString());
 }
 
+static QScriptValue custom_call(QScriptContext *ctx, QScriptEngine *)
+{
+    return ctx->argumentsObject().property(0).call(QScriptValue(), QScriptValueList() << ctx->argumentsObject().property(1));
+}
+
 void tst_QScriptContext::backtrace_data()
 {
     QTest::addColumn<QString>("code");
@@ -681,7 +686,36 @@ void tst_QScriptContext::backtrace_data()
         QTest::newRow("two function") << source << expected;
     }
 
+    {
+        QString func("function foo(a, b) {\n"
+                     "  return bt(a);\n"
+                     "}");
+
+        QString source = func + QString::fromLatin1("\n"
+                 "custom_call(foo, 'hello');\n"
+                 "var a = 1\n");
+
+        QStringList expected;
+        expected << "<native>('hello') at -1"
+                 << "foo(a = 'hello') at testfile:2"
+                 << QString("<native>(%1, 'hello') at -1").arg(func)
+                 << "<global>() at testfile:4";
 
+        QTest::newRow("call") << source << expected;
+    }
+
+    {
+        QString source = QString::fromLatin1("\n"
+        "custom_call(bt, 'hello_world');\n"
+        "var a = 1\n");
+
+        QStringList expected;
+        expected << "<native>('hello_world') at -1"
+        << "<native>(function () {\n    [native code]\n}, 'hello_world') at -1"
+        << "<global>() at testfile:2";
+
+        QTest::newRow("call native") << source << expected;
+    }
 }
 
 
@@ -693,6 +727,7 @@ void tst_QScriptContext::backtrace()
     QScriptEngine eng;
     eng.globalObject().setProperty("bt", eng.newFunction(getBacktrace));
     eng.globalObject().setProperty("custom_eval", eng.newFunction(custom_eval));
+    eng.globalObject().setProperty("custom_call", eng.newFunction(custom_call));
 
     QString fileName = "testfile";
     QScriptValue ret = eng.evaluate(code, fileName);
-- 
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