java.lang.StackOverflowError in Lowering

[Maurizio Cimadamore]

Hi Ali,
the bug is not in lower but is actually in attribution - the enclosing 
type of the innermost lambda is not set properly; which causes the loop 
in the desugaring phase. I will fix this in my next push.

Maurizio


On 22/06/11 15:26, Ali Ebrahimi wrote:
> Hi Maurizio,
> I'm working on converting statefull lambdas to stateless ones and 
> discovered following StackOverflowError error.
>
> Test case:
> class Test{
>    static class D {
>
>         int[] grandTotal = {0};  //******************************
>         public void foo() {
>
>             MList<Department> departments = new MList.MListImpl<>();
>
>             MList<Employee> employees = new MList.MListImpl<>();
>
>             departments.forEach( #{Department d ->
>                 int[] deptTotal = {0};
>                 employees.filter(#{Employee e -> e.dept == d
>                 }).forEach(#{Employee e ->
>                     deptTotal[0] += e.salary;
>                     grandTotal[0] += e.salary;
>                 });
>                 System.out.printf("Total for dept %s = %d \n",
> d.name <http://d.name>, deptTotal[0]);
>             });
>                 System.out.printf("Grant total = %d \n", grandTotal[0]);
>             }
>     }
>
> Error Report:
>
> Information:The system is out of resources.
> Information:Consult the following stack trace for details.
> Information:java.lang.StackOverflowError
> Information:    at 
> com.sun.tools.javac.code.Symbol$ClassSymbol.isSubClass(Symbol.java:802)
> Information:    at 
> com.sun.tools.javac.code.Symbol.isMemberOf(Symbol.java:322)
> Information:    at com.sun.tools.javac.comp.Lower.access(Lower.java:1138)
> Information:    at com.sun.tools.javac.comp.Lower.access(Lower.java:1189)
> Information:    at 
> com.sun.tools.javac.comp.Lower.makeOwnerThisN(Lower.java:1720)
> Information:    at 
> com.sun.tools.javac.comp.Lower.makeOwnerThis(Lower.java:1704)
> Information:    at 
> com.sun.tools.javac.comp.Lower.accessBase(Lower.java:1013)
> Information:    at com.sun.tools.javac.comp.Lower.access(Lower.java:1175)
> Information:Compilation completed with 1 error and 0 warnings
> Information:1 error
> Information:0 warnings
> Error:Compiler internal error. Process terminated with exit code 3
>
> One Note:
> if you move "int[] grandTotal = {0};" into foo method, the error goes 
> away.
>
> Best Regards,
> Ali Ebrahimi