Hi, Kenny. Thank you for your report, can you please file the bug here: https://bugs.java.com/bugdatabase
On 3/16/20 10:08 am, Kenny Wong wrote:
Hello, After upgrading from Java 8 to 11, we started seeing OOM errors when parsing HTML files with a large <pre> tag text. The test program below works fine under Java 8, but terminates with an OutOfMemoryError under Java 9 or later. If the <pre> tag text is *not* '\n' separated, it works in all versions of Java. We have tracked down the problem to a change originally committed to Java 9: https://github.com/openjdk/jdk/commit/17679435a174f6a7f0e450309dc8775e77df968a Reverting the above change or replacing `Arrays.copyOf(txt, txt.length)` with `Arrays.copyOfRange(txt, offs, offs + length)` fixes the OOM error. Thank you, Kenny Wong --- 8< --- import java.io.StringReader; import javax.swing.text.html.HTMLEditorKit; public class Test { public static void main(String[] args) throws Exception { StringBuilder html = new StringBuilder(); html.append("<html><body><pre>"); for (int i = 0; i < 10_000; i++) { html.append("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") .append("\n"); } html.append("</pre></body></html>"); HTMLEditorKit kit = new HTMLEditorKit(); kit.read(new StringReader(html.toString()), kit.createDefaultDocument(), 0); } } -- --- 8< --- $ java --version openjdk 11.0.3 2019-04-16 LTS OpenJDK Runtime Environment Zulu11.31+11-CA (build 11.0.3+7-LTS) OpenJDK 64-Bit Server VM Zulu11.31+11-CA (build 11.0.3+7-LTS, mixed mode) -bash3.2$ java Test.java Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.base/java.util.Arrays.copyOf(Arrays.java:3841) at java.desktop/javax.swing.text.DefaultStyledDocument$ElementSpec.<init>(DefaultStyledDocument.java:1267) at java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.addContent(HTMLDocument.java:3909) at java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.addContent(HTMLDocument.java:3883) at java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.preContent(HTMLDocument.java:3787) at java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.handleText(HTMLDocument.java:2766) at java.desktop/javax.swing.text.html.parser.DocumentParser.handleText(DocumentParser.java:271) at java.desktop/javax.swing.text.html.parser.Parser.handleText(Parser.java:409) at java.desktop/javax.swing.text.html.parser.Parser.endTag(Parser.java:524) at java.desktop/javax.swing.text.html.parser.Parser.parseTag(Parser.java:1934) at java.desktop/javax.swing.text.html.parser.Parser.parseContent(Parser.java:2195) at java.desktop/javax.swing.text.html.parser.Parser.parse(Parser.java:2372) at java.desktop/javax.swing.text.html.parser.DocumentParser.parse(DocumentParser.java:135) at java.desktop/javax.swing.text.html.parser.ParserDelegator.parse(ParserDelegator.java:113) at java.desktop/javax.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java:263) at Test.main(Test.java:16) ---
-- Best regards, Sergey.
