[Bug java/13098] New: accepts invalid code referencing package only constructor

[Bug java/13098] New: accepts invalid code referencing package only constructor

[pinskia at gcc dot gnu dot org]

try to compile this, gcj should reject this.
t/t.java:
package t;
public class t
{
t(){}
}
test.java:
import t.t;
class test {
    public static void main(String argv[]) {
        t b = new t();
    }
}

-- 
           Summary: accepts invalid code referencing package only
                    constructor
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,s28patel at student dot
                    math dot uwaterloo dot ca


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13098

[Bug java/13098] accepts invalid code referencing package only constructor

[s28patel at student dot math dot uwaterloo dot ca]

------- Additional Comments From s28patel at student dot math dot uwaterloo dot ca  2003-11-18 09:40 -------
Some more thoughts on this problem...

If a constructor has no access specifier, "... there is default access, which is
permitted only when the access occurs from within the package in which the type
is declared," so in this case access should not be permitted (section 6.6.1 in
the Java Language Specification 2nd ed. available at
http://java.sun.com/docs/books/jls/second_edition/html/names.doc.html).

Sun's compiler and IBM's jikes compiler do not compile the code, yet gcj does
compile it.

gij throws an an IllegalAccessError when running the improperly compiled code,
but oddly both Microsoft's VM and Sun's VM run it without error (the constructor
is actually executed).  It seems to me that this this is a problem with Sun's VM
and Microsoft's VM, and could possibly cause of incompatibilities.

For example what if someone developed a Java program with gcj that accidently
accesses a constructor with default access from outside the package (which is
technically illegal)?  Then the bytecode would run fine on Sun's VM or
Microsoft's VM, but would fail if run with gij, and users might think gij has a bug.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13098

[Bug java/13098] accepts invalid code referencing package only constructor

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-27 15:31 -------
Confirmed, there are a couple of access bugs for gcj somewhere.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-12-27 15:31:18
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13098

[Bug java/13098] accepts invalid code referencing package only constructor

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-27 21:15 -------
Related to bug 1262.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13098

[Bug java/13098] accepts invalid code referencing package only constructor

[rmathew at gcc dot gnu dot org]

------- Additional Comments From rmathew at gcc dot gnu dot org  2004-04-27 09:06 -------
The patch for 9685:

  http://gcc.gnu.org/ml/java-patches/2004-q2/msg00230.html

also fixes this bug.

*** This bug has been marked as a duplicate of 9685 ***

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13098