Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.
Bug 358118 - NPE in Xbase compiler for method with inferred return type and recursive method call
Summary: NPE in Xbase compiler for method with inferred return type and recursive meth...
Status: CLOSED FIXED
Alias: None
Product: TMF
Classification: Modeling
Component: Xtext (show other bugs)
Version: unspecified   Edit
Hardware: All All
: P3 minor (vote)
Target Milestone: SR2   Edit
Assignee: Project Inbox CLA
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-09-19 09:51 EDT by Christian Weisskopf CLA
Modified: 2017-09-19 18:00 EDT (History)
2 users (show)

See Also:
sebastian.zarnekow: indigo+

Attachments
Xtend class (786 bytes, text/plain)
2011-09-19 09:52 EDT, Christian Weisskopf CLA 		no flags Details
Stack trace (3.61 KB, text/plain)
2011-09-19 09:53 EDT, Christian Weisskopf CLA 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Christian Weisskopf CLA 2011-09-19 09:51:20 EDT 
Build Identifier: 2.0.1.v201108020636

The attached Xtend class (using the Xtend tutorial project) does not compile to java due to a NPE thrown in the Xtend/Xbase compiler. The call hierarchy to reproduce the error is as follows:

- recursiveMethod (Return type declared)
  - method1 (Return type declared)
    - method2 (No return type declared)
      - recursiveMethod (Return type declared)

The circumstances are very specific and in any of the following cases, no NPE is thrown:

- In case of a declared return type for method2
- In case of a direct call to method2 from the recursiveMethod
- In case of no call to recusriveMethod in method2

See the attached files for more details and the stack trace.

Reproducible: Always

Steps to Reproduce:
1. Import the Xtend tutorial project
2. Copy the attached Xtend class in to the xtend.tutorial.basics package
3. Check the Eclipse .log-file for an NPE
Comment 1 Christian Weisskopf CLA 2011-09-19 09:52:48 EDT 
Created attachment 203590 [details]
Xtend class
Comment 2 Christian Weisskopf CLA 2011-09-19 09:53:41 EDT 
Created attachment 203591 [details]
Stack trace
Comment 3 Sebastian Zarnekow CLA 2011-09-29 10:01:08 EDT 
Pushed to master.
Comment 4 Karsten Thoms CLA 2017-09-19 17:49:35 EDT 
Closing all bugs that were set to RESOLVED before Neon.0
Comment 5 Karsten Thoms CLA 2017-09-19 18:00:37 EDT 
Closing all bugs that were set to RESOLVED before Neon.0