1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 import java.awt.Font; 24 import java.awt.Graphics2D; 25 import java.awt.font.FontRenderContext; 26 import java.awt.image.BufferedImage; 27 import java.io.FileInputStream; 28 import java.io.ByteArrayInputStream; 29 import java.io.InputStream; 30 import java.lang.reflect.Field; 31 import java.lang.reflect.Method; 32 33 import sun.font.Font2DHandle; 34 import sun.font.Font2D; 35 import sun.font.FontScaler; 36 import sun.font.Type1Font; 37 38 /** 39 * @bug 8132985 40 * @summary Tests to verify Type1 Font scaler dispose crashes 41 * @modules java.desktop/sun.font 42 */ 43 public class FontDisposeTest 44 { 45 public static void main(String[] args) throws Exception 46 { 47 // The bug only happens with Type 1 fonts. The Ghostscript font files 48 // should be commonly available. From distro pacakge or 49 // ftp://ftp.gnu.org/gnu/ghostscript/gnu-gs-fonts-other-6.0.tar.gz 50 // Pass pfa/pfb font file as argument 51 String path = args[0]; 52 53 // Load 54 InputStream stream = new FileInputStream(path); 55 Font font = Font.createFont(Font.TYPE1_FONT,stream); 56 57 // Ensure native bits have been generated 58 BufferedImage img = new BufferedImage(100,100, 59 BufferedImage.TYPE_INT_ARGB); 60 Graphics2D g2d = img.createGraphics(); 61 FontRenderContext frc = g2d.getFontRenderContext(); 62 63 font.getLineMetrics("derp",frc); 64 65 // Force disposal - 66 // System.gc() is not sufficient. 67 Field font2DHandleField = Font.class.getDeclaredField("font2DHandle"); 68 font2DHandleField.setAccessible(true); 69 sun.font.Font2DHandle font2DHandle = 70 (sun.font.Font2DHandle)font2DHandleField.get(font); 71 72 sun.font.Font2D font2D = font2DHandle.font2D; 73 sun.font.Type1Font type1Font = (sun.font.Type1Font)font2D; 74 75 Method getScalerMethod = 76 sun.font.Type1Font.class.getDeclaredMethod("getScaler"); 77 getScalerMethod.setAccessible(true); 78 sun.font.FontScaler scaler = 79 (sun.font.FontScaler)getScalerMethod.invoke(type1Font); 80 81 // dispose should not crash due to double free 82 scaler.dispose(); 83 } 84 }