V4: Generate function tables on 64bit windows

In order for global exception handlers to be called reliably, the runtime
needs to unwind through JIT-generated code. This can be facilitated by
installing a "function table" for each JITed function that specifies "use
the frame pointer".

Also make sure to generate a function table for JIT'ed regular
expressions. Those were forgotten also in the linux case.

Fixes: QTBUG-50061
Change-Id: Ib0b8ae9356ed80afe1cab017e36efa4ccbe73f90
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 53 insertions, 0 deletions

diff --git a/tests/auto/qml/qv4assembler/data/crash.qml b/tests/auto/qml/qv4assembler/data/crash.qml
new file mode 100644
index 0000000000..dfdb9ceba5
--- /dev/null
+++ b/tests/auto/qml/qv4assembler/data/crash.qml
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQml 2.2
+import Crash 1.0
+
+QtObject {
+    property Crash crash: Crash {
+        id: crash
+    }
+
+    // Recursion makes the crash more reliable
+    // With a single frame the unwinder might guess
+    // the next frame by chance.
+    function recurse(x) {
+        if (x > 32)
+            crash.crash();
+        else
+            recurse(x + 1);
+    }
+
+    property Timer timer: Timer {
+        interval: 10
+        running: true
+        onTriggered: recurse(0)
+    }
+}
+