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Re: [RFC/RFT] Patch (java): Switch to new verifier


On 04 Mar 2005 10:13:29 -0700, Tom Tromey <tromey@redhat.com> wrote:
> Ranjit> If I compile this to a class file and then use
> Ranjit> "-O3 -findirect-dispatch" (to trigger the new verifier
> Ranjit> without this patch), I get to see the bug.
> 
> I can't reproduce this here:

Which is weird, since I still can:
-------------------------------- 8< --------------------------------
~/tmp > cat Foo.java
public class Foo
{
  static int bar( )
  {
    int[] x = (int[] )null;
    int y = x.length;
    return 666;
  }

  public static void main( String[] args)
  {
    try
    {
      int n = bar( );
      System.err.println( "ERROR");
    }
    catch( NullPointerException npe) { /* EXPECTED */ }
  }
}
~/tmp > mygcj --version
gcj (GCC) 4.1.0 20050305 (experimental)
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

~/tmp > mygcj -C Foo.java
~/tmp > mygcj --main=Foo Foo.class
~/tmp > ./a.out
~/tmp > mygcj --main=Foo -O3 Foo.class
~/tmp > ./a.out
~/tmp > mygcj --main=Foo -findirect-dispatch Foo.class
~/tmp > ./a.out
~/tmp > mygcj --main=Foo -findirect-dispatch -O3 Foo.class
~/tmp > ./a.out
ERROR
~/tmp >
-------------------------------- 8< --------------------------------

Thanks,
Ranjit.

-- 
Ranjit Mathew      Email: rmathew AT gmail DOT com

Bangalore, INDIA.    Web: http://ranjitmathew.hostingzero.com/


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