[Bug libgcj/16281] New: JNI accepts illegal Class Descriptors

[Bug libgcj/16281] New: JNI accepts illegal Class Descriptors

[mark at gcc dot gnu dot org]

JNI Class Descriptors look like Lclass/name/with/dot/replaced/by/slash;
Ljava/lang/String; is a legal JNI Class Descriptor, but Ljava.lang.String; is
not. The second form is accepted in for example Method Descriptors given to
GetMethodID as shown in this email:
http://gcc.gnu.org/ml/java-patches/2004-q2/msg00831.html

It would be nice if there was at least a warning that non-standard Class
Descriptors are accepted since this will likely fail on other JNI
implementations (like the jamvm one).

-- 
           Summary: JNI accepts illegal Class Descriptors
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: libgcj
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mark at gcc dot gnu dot org
                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=16281

[Bug libgcj/16281] JNI accepts illegal Class Descriptors

[mckinlay at redhat dot com]

------- Additional Comments From mckinlay at redhat dot com  2004-06-30 03:26 -------
Confirmed. The problem is that JNI uses the "slash format" while GCJ uses the "dot format" internally. 
We could perhaps switch to using "slash format" internally in GCJ, although this could make some 
things a little less efficient. In any case, IMO libgcj should never accept "dot format" for JNI. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-06-30 03:26:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16281

[Bug libgcj/16281] JNI accepts illegal Class Descriptors

[mckinlay at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|enhancement                 |normal


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16281

[Bug libgcj/16281] JNI accepts illegal Class Descriptors

[mark at gcc dot gnu dot org]

------- Additional Comments From mark at gcc dot gnu dot org  2005-09-04 12:20 -------
This is addressed by the patch for bug #19512 Optional JNI error checking. Which
(among others) includes the following:

- Check that '.' is not used in method and field descriptors.

*** This bug has been marked as a duplicate of 19512 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16281