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* [Bug libgcj/20435] New: regex pattern compiling bug
@ 2005-03-15 17:39 green at redhat dot com
2005-05-28 18:06 ` [Bug libgcj/20435] " ziga at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: green at redhat dot com @ 2005-03-15 17:39 UTC (permalink / raw)
To: java-prs
The following test code (derived from the blojsom wiki code) exposes a bug in
our regex compiler....
import java.util.regex.Pattern;
public class pat
{
private static final String YMD_PERMALINK_REGEX =
"/(\\d\\d\\d\\d)/(\\d{1,2}+)/(\\d{1,2}+)/(.+)";
private static final Pattern YMD_PERMALINK_PATTERN =
Pattern.compile(YMD_PERMALINK_REGEX, Pattern.UNICODE_CASE);
public static void main (String[] args)
{
System.out.println ("ok");
}
}
This should print "ok", but instead we get:
$ gij pat
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader)
(/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)
Caused by: java.util.regex.PatternSyntaxException: At position 8 in regular
expression pattern:
attempted to repeat a token that is already repeated
/(\d\d\d\d)/(\d{1,2}+)/(\d{1,2}+)/(.+)
^
at java.util.regex.Pattern.Pattern(java.lang.String, int)
(/usr/lib/libgcj.so.6.0.0)
at java.util.regex.Pattern.compile(java.lang.String, int)
(/usr/lib/libgcj.so.6.0.0)
at pat.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0)
...3 more
--
Summary: regex pattern compiling bug
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libgcj
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: green at redhat dot com
CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
dot org
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20435
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/20435] regex pattern compiling bug
2005-03-15 17:39 [Bug libgcj/20435] New: regex pattern compiling bug green at redhat dot com
@ 2005-05-28 18:06 ` ziga at gcc dot gnu dot org
2005-05-28 20:55 ` ziga at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: ziga at gcc dot gnu dot org @ 2005-05-28 18:06 UTC (permalink / raw)
To: java-prs
------- Additional Comments From ziga at gcc dot gnu dot org 2005-05-28 18:06 -------
Confirmed. This regular expression makes use of possessive quantifiers (?+, *+,
++, {n,m}+), which gnu.regexp doesn't support currently. I've written some
Mauve test cases[1] for possessive quantifiers and will be sending a patch
adding the necessary support to classpath-patches shortly.
[1] http://sources.redhat.com/ml/mauve-patches/2005/msg00049.html
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |ziga at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20435
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/20435] regex pattern compiling bug
2005-03-15 17:39 [Bug libgcj/20435] New: regex pattern compiling bug green at redhat dot com
2005-05-28 18:06 ` [Bug libgcj/20435] " ziga at gcc dot gnu dot org
@ 2005-05-28 20:55 ` ziga at gcc dot gnu dot org
2005-06-01 22:11 ` cvs-commit at gcc dot gnu dot org
2005-06-14 17:01 ` tromey at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: ziga at gcc dot gnu dot org @ 2005-05-28 20:55 UTC (permalink / raw)
To: java-prs
------- Additional Comments From ziga at gcc dot gnu dot org 2005-05-28 20:55 -------
Proposed patch:
http://thread.gmane.org/gmane.comp.java.classpath.patches/2416
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20435
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/20435] regex pattern compiling bug
2005-03-15 17:39 [Bug libgcj/20435] New: regex pattern compiling bug green at redhat dot com
2005-05-28 18:06 ` [Bug libgcj/20435] " ziga at gcc dot gnu dot org
2005-05-28 20:55 ` ziga at gcc dot gnu dot org
@ 2005-06-01 22:11 ` cvs-commit at gcc dot gnu dot org
2005-06-14 17:01 ` tromey at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-06-01 22:11 UTC (permalink / raw)
To: java-prs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-06-01 22:11 -------
Subject: Bug 20435
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: ziga@gcc.gnu.org 2005-06-01 22:11:00
Modified files:
libjava : ChangeLog
libjava/gnu/regexp: RE.java RESyntax.java RETokenRepeated.java
libjava/java/util/regex: Pattern.java
Log message:
2005-06-01 Ziga Mahkovec <ziga.mahkovec@klika.si>
PR libgcj/20435:
* gnu/regexp/RESyntax.java (RE_POSSESSIVE_OPS): New field.
(static): Add possessive matching to JAVA_1_4 syntax.
* gnu/regexp/RETokenRepeated.java (possessive): New field.
(makePossessive, isPossessive): New methods.
(match): Don't back off during possessive matching.
* gnu/regexp/RE.java (initalize): Accept possessive quantifier.
* java/util/regex/Pattern.java (constructor): Switch syntax from PERL5
to JAVA_1_4.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/ChangeLog.diff?cvsroot=gcc&r1=1.3643&r2=1.3644
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/gnu/regexp/RE.java.diff?cvsroot=gcc&r1=1.4&r2=1.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/gnu/regexp/RESyntax.java.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/gnu/regexp/RETokenRepeated.java.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/java/util/regex/Pattern.java.diff?cvsroot=gcc&r1=1.8&r2=1.9
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20435
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/20435] regex pattern compiling bug
2005-03-15 17:39 [Bug libgcj/20435] New: regex pattern compiling bug green at redhat dot com
` (2 preceding siblings ...)
2005-06-01 22:11 ` cvs-commit at gcc dot gnu dot org
@ 2005-06-14 17:01 ` tromey at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: tromey at gcc dot gnu dot org @ 2005-06-14 17:01 UTC (permalink / raw)
To: java-prs
------- Additional Comments From tromey at gcc dot gnu dot org 2005-06-14 17:01 -------
Fix checked in.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20435
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-06-14 17:01 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2005-03-15 17:39 [Bug libgcj/20435] New: regex pattern compiling bug green at redhat dot com
2005-05-28 18:06 ` [Bug libgcj/20435] " ziga at gcc dot gnu dot org
2005-05-28 20:55 ` ziga at gcc dot gnu dot org
2005-06-01 22:11 ` cvs-commit at gcc dot gnu dot org
2005-06-14 17:01 ` tromey at gcc dot gnu dot org
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