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Date: Thu, 06 Jan 2005 02:19:00 -0000
From: "mckinlay at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: java-prs@gcc.gnu.org
Message-ID: <20050106021930.19285.mckinlay@redhat.com>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug java/19285] New: Interfaces not initialized by static field access
X-Bugzilla-Reason: CC
X-SW-Source: 2005-q1/txt/msg00018.txt.bz2
List-Id: <java-prs.sourceware.org>

Consider the following test case:

public class Test implements RuntimeConstants
{
  public static void main(String[] args)
  {
    System.out.println(foo[0]);
  }
}

interface RuntimeConstants 
{
  static int foo[] = {1};    
}

Older bytecode compilers would implement the access to "foo" like so:

  3: getstatic <Field RuntimeConstants.foo int[]>

However, presumably for reasons of binary compatibility, bytecode produced by
some modern Java compilers (javac 1.5.0 with "-target" >= 1.3) does the following:

  3: getstatic <Field Test.foo int[]>

When "foo" is actually in an interface, there is a problem for GCJ because we
have no way to ensure that the interface gets initialized when it is accessed.
Initialization of a class does not itself cause initialization of its
superinterfaces.

-- 
           Summary: Interfaces not initialized by static field access
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mckinlay at redhat dot com
                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=19285