Note: the Deadline has been extended to May 15.

Call For Papers

International Workshop on Aliasing, Confinement and Ownership in object-oriented programming (IWACO)

July 30, 2007

in conjunction with ECOOP 2007

Berlin, Germany July 30th to August 3rd


Front page    Call for papers    Accepted papers    Schedule    IWACO 2008

The power of objects lies in the flexibility of their interconnection structure. But this flexibility comes at a cost. Because an object can be modified via any alias, object-oriented programs are hard to understand, maintain, and analyse. Aliasing makes objects depend on their environment in unpredictable ways, breaking the encapsulation necessary for reliable software components, making it difficult to reason about and optimise programs, obscuring the flow of information between objects, and introducing security problems.

Aliasing is a fundamental difficulty, but we accept its presence. Instead we seek techniques for describing, reasoning about, restricting, analysing, and preventing the connections between objects and/or the flow of information between them. Promising approaches to these problems are based on ownership, confinement, information flow, sharing control, escape analysis, argument independence, read-only references, effects systems, and access control mechanisms.

The workshop will generally address the question how to manage interconnected object structures in the presence of aliasing. In particular, we will consider the following issues (among others):

We encourage not only submissions presenting original research results, but also papers that attempt to establish links between different approaches and/or papers that include survey material. Original research results should be clearly described, and their usefulness to practitioners outlined. Paper selection will be based on the quality of the submitted material.

The best papers will appear in a special issue of the IET Software journal. A workshop report written by the organisers will be published in the ECOOP workshop reader after the ECOOP conference.

The workshop will be held as part of the ECOOP'07 conference taking place in Berlin, Germany.

Invited Speaker

Vijay Saraswat, IBM TJ Watson Research Lab and Penn State University

Programme Committee

Jonathan Aldrich(Carnegie Mellon University)
Chandrasekhar Boyapati(University of Michigan)
Dave Clarke(CWI)
Sophia Drossopoulou(Imperial College)
Rustan Leino(Microsoft Research)
Peter Müller(ETH Zurich)
James Noble(Victoria University of Wellington)
Peter O'Hearn(Queen Mary, University of London)
Alex Potanin(Victoria University of Wellington)
Jan Vitek(Purdue University)
Tobias Wrigstad(Stockholm University)

Important Dates

Submission: May 15, 2007
Notification: June 6, 2007
Final version: June 29, 2007
Workshop: July 30, 2007
ECOOP'07 early registration:June 15, 2007


Dave Clarke(CWI)
Sophia Drossopoulou(Imperial College)
James Noble(Victoria University of Wellington)
Tobias Wrigstad(Stockholm University)


The number of participants is limited to 25. Apart from those with accepted papers, others may attend by sending an email to Tobias Wrigstad (tobias AT indicating what contribution you could make to the workshop. A small number of places will be reserved for PhD students and other researchers wishing to begin research in this area.

Selection Process

Both full papers (up to 10 pgs.) and position papers (1-2 pgs.) are welcome. All submissions will be reviewed by the programme committee. The accepted papers, after rework by the authors, will be published in the Workshop Proceedings, which will be distributed at the workshop. All accepted submissions shall remain available from the workshop web page.

Papers should be formatted in LaTeX and be sent as PS or PDF files to tobias AT by May 15, 2007 and be accompanied by a text-only message containing: title, abstract and keywords, the authors' full names, and address and e-mail for correspondence. Submissions should be in English. You may use any suitable document class (a4+twocolumn, llncs, sigplanconf, etc.).


Queries may be directed to Tobias Wrigstad (tobias AT