[Bug-kawa] [bug #4881] lambda expr within define-simple-class

[nobody]

=================== BUG #4881: LATEST MODIFICATIONS ==================
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=4881&group_id=145

Changes by: Per Bothner <address@hidden>
Date: Sat 11/01/2003 at 07:00 (GMT)

            What     | Removed                   | Added
---------------------------------------------------------------------------
            Category | None                      | Scheme larguage
            Severity | 5 - Major                 | 3
           Bug Group | None                      | Compile-time exception
         Assigned to | None                      | bothner




=================== BUG #4881: FULL BUG SNAPSHOT ===================


Submitted by: ctdean                  Project: Kawa                         
Submitted on: Thu 08/21/2003 at 19:28
Category:  Scheme larguage            Severity:  3                          
Bug Group:  Compile-time exception    Resolution:  None                     
Assigned to:  bothner                 Status:  Open                         

Summary:  lambda expr within define-simple-class

Original Submission:  The attached file generates a NPE when compiled:



java.lang.NullPointerException

        at gnu.expr.LambdaExp.allocChildClasses(LambdaExp.java:936)

        at gnu.expr.ClassExp.compile(ClassExp.java:372)



Follow-up Comments
*******************

-------------------------------------------------------
Date: Fri 08/22/2003 at 16:29       By: ctdean
We do have a workaround now, thanks.  The actual code uses filter-map and a 
lambda (instead of returning the lambda expression).   By "unrolling" this to 
(filter ... (map ...)) the code compiles fine - presumably because map is 
cleverly optimizing the lambda exp and inlining the code.



-------------------------------------------------------
Date: Fri 08/22/2003 at 06:11       By: bothner
I've reproduced the problem, but it doesn't look like

a simple fix.  (I'm guessing multiple fixes are needed.)

How urgent in this for you?  Do you have a work-around?


CC list is empty


File Attachments
****************

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Date: Thu 08/21/2003 at 19:28  Name: Foo.scm  Size: 0KB   By: ctdean

http://savannah.gnu.org/bugs/download.php?group_id=145&amp;bug_id=4881&amp;bug_file_id=612


For detailed info, follow this link:
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=4881&group_id=145

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