public inbox for java-prs@sourceware.org help / color / mirror / Atom feed
From: "ovidr at users dot sourceforge dot net" <gcc-bugzilla@gcc.gnu.org> To: java-prs@gcc.gnu.org Subject: [Bug libgcj/18187] New: ava.util.WeakHashMap$WeakEntrySet.next() throws NoSuchElementException during GC Date: Wed, 27 Oct 2004 19:44:00 -0000 [thread overview] Message-ID: <20041027194432.18187.ovidr@users.sourceforge.net> (raw) During garbage collection, the WeakHashMap will throw a NoSuchElementException when performing the methods: .keySet().toArray() .clear(); and maybe more. Sun's java does not. Here is an example: gcc version 4.0.0 20041014 (experimental) gcj -main=WH WH.java import java.util.*; public class WH { public static void main(String[] s) { Thread t = new Thread() { public void run() { while (true) { System.gc(); try { Thread.sleep(1000); } catch (Exception e) { } } } }; WeakHashMap w = new WeakHashMap(); for (int i = 0; i < 10000; i++) w.put(new WH(), null); t.setDaemon(true); t.start(); try { w.clear(); } catch (NoSuchElementException n) { System.out.println("From .clear(): "); n.printStackTrace(); } for (int i = 0; i < 10000; i++) w.put(new WH(), null); try { for (int i = 0; i < 1000; i++) System.out.print("["+w.keySet().toArray().length+"]"); } catch (NoSuchElementException n) { System.out.println("iFrom .toArray():"); n.printStackTrace(); } } } -- Summary: ava.util.WeakHashMap$WeakEntrySet.next() throws NoSuchElementException during GC Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: libgcj AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ovidr at users dot sourceforge dot net CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18187
next reply other threads:[~2004-10-27 19:44 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-10-27 19:44 ovidr at users dot sourceforge dot net [this message] 2004-10-27 19:46 ` [Bug libgcj/18187] " pinskia at gcc dot gnu dot org 2004-10-28 14:26 ` [Bug libgcj/18187] java.util.WeakHashMap$WeakEntrySet.next() " pinskia at gcc dot gnu dot org 2004-10-28 14:26 ` pinskia at gcc dot gnu dot org 2004-10-28 14:26 ` pinskia at gcc dot gnu dot org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20041027194432.18187.ovidr@users.sourceforge.net \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=java-prs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).