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Bug 368908 - Endless Loop in Content Assist Parser
Summary: Endless Loop in Content Assist Parser
Status: NEW
Alias: None
Product: TMF
Classification: Modeling
Component: Xtext (show other bugs)
Version: unspecified   Edit
Hardware: PC Windows 7
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Project Inbox CLA
QA Contact:
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Blocks:
 
Reported: 2012-01-18 00:26 EST by Ralph Mayr CLA
Modified: 2016-04-13 16:54 EDT (History)
3 users (show)

See Also:

Attachments
Simple grammar to reproduce the behavior (736 bytes, text/plain)
2012-01-18 00:27 EST, Ralph Mayr CLA 		no flags Details
Test file (21 bytes, text/plain)
2012-01-18 00:27 EST, Ralph Mayr CLA 		no flags Details
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Description Ralph Mayr CLA 2012-01-18 00:26:30 EST 
Build Identifier: Version: 3.7.0 Build id: I20110613-1736

For details see the last few posts in http://www.eclipse.org/forums/index.php/m/775170/.

I was able to reproduce this behavior in 2.0.1 and the latest available 2.2.1 release.

Reproducible: Always

Steps to Reproduce:
1. Create an Xtext project with the attached grammar (MyDsl.xtext)
2. Generate, build and run the editor
3. Open the attached test file (test.mydsl)
4. Put the cursor behind the colon in line 1
5. Press CTRL+Space to invoke content assist

-> Endless loop in the InternalMyDslParser
Comment 1 Ralph Mayr CLA 2012-01-18 00:27:02 EST 
Created attachment 209656 [details]
Simple grammar to reproduce the behavior
Comment 2 Ralph Mayr CLA 2012-01-18 00:27:30 EST 
Created attachment 209657 [details]
Test file
Comment 3 Sebastian Zarnekow CLA 2012-06-08 07:50:19 EDT 
see also 382088
Comment 4 Sebastian Zarnekow CLA 2013-04-19 08:38:37 EDT 
Still reproducable.

Antlr error recovery fails on the emtpy 'Access' rule.
Comment 5 Karsten Thoms CLA 2016-04-13 16:54:53 EDT 
Still happens with 2.9