3789983e89
Reviewed-by: darcy, ihse
85 lines
3.1 KiB
Java
85 lines
3.1 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Font;
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import java.awt.Graphics2D;
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import java.awt.font.FontRenderContext;
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import java.awt.image.BufferedImage;
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import java.io.FileInputStream;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import sun.font.Font2DHandle;
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import sun.font.Font2D;
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import sun.font.FontScaler;
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import sun.font.Type1Font;
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/**
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* @bug 8132985
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* @summary Tests to verify Type1 Font scaler dispose crashes
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* @modules java.desktop/sun.font
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*/
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public class FontDisposeTest
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{
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public static void main(String[] args) throws Exception
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{
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// The bug only happens with Type 1 fonts. The Ghostscript font files
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// should be commonly available. From distro pacakge or
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// ftp://ftp.gnu.org/gnu/ghostscript/gnu-gs-fonts-other-6.0.tar.gz
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// Pass pfa/pfb font file as argument
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String path = args[0];
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// Load
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InputStream stream = new FileInputStream(path);
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Font font = Font.createFont(Font.TYPE1_FONT,stream);
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// Ensure native bits have been generated
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BufferedImage img = new BufferedImage(100,100,
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BufferedImage.TYPE_INT_ARGB);
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Graphics2D g2d = img.createGraphics();
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FontRenderContext frc = g2d.getFontRenderContext();
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font.getLineMetrics("derp",frc);
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// Force disposal -
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// System.gc() is not sufficient.
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Field font2DHandleField = Font.class.getDeclaredField("font2DHandle");
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font2DHandleField.setAccessible(true);
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sun.font.Font2DHandle font2DHandle =
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(sun.font.Font2DHandle)font2DHandleField.get(font);
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sun.font.Font2D font2D = font2DHandle.font2D;
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sun.font.Type1Font type1Font = (sun.font.Type1Font)font2D;
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Method getScalerMethod =
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sun.font.Type1Font.class.getDeclaredMethod("getScaler");
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getScalerMethod.setAccessible(true);
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sun.font.FontScaler scaler =
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(sun.font.FontScaler)getScalerMethod.invoke(type1Font);
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// dispose should not crash due to double free
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scaler.dispose();
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}
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}
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