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* [Bug libgcj/14781] New: Need flag to disable bytecode verification
@ 2004-03-30 5:43 rmathew at hotmail dot com
2004-03-30 5:50 ` [Bug libgcj/14781] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: rmathew at hotmail dot com @ 2004-03-30 5:43 UTC (permalink / raw)
To: java-prs
There is currently no way to disable bytecode verification
of loaded classes in gij, except by either commenting out
the call to _Jv_VerifyMethod( ) in libjava/resolve.cc
or by emptying out the body of that method in
libjava/verify.cc and then recompiling the whole
of libgcj!
Needless to say this is quite tedious.
Sun's JVMs support the following flags that should
be implemented by gij as well:
-noverify Do not do bytecode verification.
-verify Verify *all* loaded bytecode.
In addition, Sun's JVMs do not verify the classes in
the bootstrap CLASSPATH by default, unless explicitly
instructed by using the "-verify" flag. Again, gij
could benefit from this "optimisation".
--
Summary: Need flag to disable bytecode verification
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: libgcj
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rmathew at hotmail dot com
CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14781
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug libgcj/14781] Need flag to disable bytecode verification 2004-03-30 5:43 [Bug libgcj/14781] New: Need flag to disable bytecode verification rmathew at hotmail dot com @ 2004-03-30 5:50 ` pinskia at gcc dot gnu dot org 2004-05-31 14:33 ` rmathew at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-03-30 5:50 UTC (permalink / raw) To: java-prs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-03-30 05:49 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-03-30 05:49:58 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14781 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/14781] Need flag to disable bytecode verification 2004-03-30 5:43 [Bug libgcj/14781] New: Need flag to disable bytecode verification rmathew at hotmail dot com 2004-03-30 5:50 ` [Bug libgcj/14781] " pinskia at gcc dot gnu dot org @ 2004-05-31 14:33 ` rmathew at gcc dot gnu dot org 2004-10-28 17:14 ` tromey at gcc dot gnu dot org 2005-05-25 15:16 ` [Bug libgcj/14781] disable bytecode verification for bootclasspath tromey at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: rmathew at gcc dot gnu dot org @ 2004-05-31 14:33 UTC (permalink / raw) To: java-prs ------- Additional Comments From rmathew at gcc dot gnu dot org 2004-05-31 11:50 ------- Actually, verification is no longer optional according to the JVMS as well as the JLS (Second Edition): http://java.sun.com/docs/books/vmspec/2nd-edition/html/ChangesAppendix.doc.html#448680 http://java.sun.com/docs/books/jls/second_edition/html/execution.doc.html#44490 That explains why the corresponding options are "hidden" in the JDK (at least as of 1.4.2). So should this be marked as WONTFIX? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14781 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/14781] Need flag to disable bytecode verification 2004-03-30 5:43 [Bug libgcj/14781] New: Need flag to disable bytecode verification rmathew at hotmail dot com 2004-03-30 5:50 ` [Bug libgcj/14781] " pinskia at gcc dot gnu dot org 2004-05-31 14:33 ` rmathew at gcc dot gnu dot org @ 2004-10-28 17:14 ` tromey at gcc dot gnu dot org 2005-05-25 15:16 ` [Bug libgcj/14781] disable bytecode verification for bootclasspath tromey at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: tromey at gcc dot gnu dot org @ 2004-10-28 17:14 UTC (permalink / raw) To: java-prs ------- Additional Comments From tromey at gcc dot gnu dot org 2004-10-28 17:14 ------- I think we'll still want a flag allowing the user to disable verification. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14781 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/14781] disable bytecode verification for bootclasspath 2004-03-30 5:43 [Bug libgcj/14781] New: Need flag to disable bytecode verification rmathew at hotmail dot com ` (2 preceding siblings ...) 2004-10-28 17:14 ` tromey at gcc dot gnu dot org @ 2005-05-25 15:16 ` tromey at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: tromey at gcc dot gnu dot org @ 2005-05-25 15:16 UTC (permalink / raw) To: java-prs ------- Additional Comments From tromey at gcc dot gnu dot org 2005-05-25 15:16 ------- We now have -verify and -noverify flags. However, we still verify classes found on the bootclasspath. I've changed this PR's synopsis to reflect this. One question is whether we care about the bootclasspath feature. -- What |Removed |Added ---------------------------------------------------------------------------- Summary|Need flag to disable |disable bytecode |bytecode verification |verification for | |bootclasspath http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14781 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-05-25 15:16 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-03-30 5:43 [Bug libgcj/14781] New: Need flag to disable bytecode verification rmathew at hotmail dot com 2004-03-30 5:50 ` [Bug libgcj/14781] " pinskia at gcc dot gnu dot org 2004-05-31 14:33 ` rmathew at gcc dot gnu dot org 2004-10-28 17:14 ` tromey at gcc dot gnu dot org 2005-05-25 15:16 ` [Bug libgcj/14781] disable bytecode verification for bootclasspath tromey at gcc dot gnu dot org
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