Notice (2018-05-24): bugzilla.xamarin.com is now in
Please join us on
Visual Studio Developer Community and in the
Mono organizations on
GitHub to continue tracking issues. Bugzilla will remain
available for reference in read-only mode. We will continue to work
on open Bugzilla bugs, copy them to the new locations
as needed for follow-up, and add the new items under Related
Our sincere thanks to everyone who has contributed on this bug
tracker over the years. Thanks also for your understanding as we
make these adjustments and improvements for the future.
Please create a new report on
Developer Community or GitHub with
your current version information, steps to reproduce, and relevant error
messages or log files if you are hitting an issue that looks similar to
this resolved bug and you do not yet see a matching new report.
Created attachment 24794 [details]
Attached IDE logs
Getting syntax errors while building iOS 11 Samples in VS 2015.
I am trying to build iOS 11 Samples (CoreML, CoreMLVision, DragandDropCollectionView, DragandDropDragBoard, DragandDropCustomView) but getting syntax errors while build samples.
Issue Observed on Samples :
CoreML, CoreMLVision, DragandDropCollectionView, DragandDropDragBoard, DragandDropCustomView samples
Sample Link : https://github.com/xamarin/ios-samples/tree/master/ios11/
Environment info :
Microsoft Visual Studio Enterprise 2015
Version 14.0.25431.01 Update 3
Microsoft .NET Framework
Installed Version: Enterprise
Xamarin 22.214.171.124 (bd7e3753c)
Xamarin.Android 126.96.36.199 (fb018c5)
Xamarin.iOS 188.8.131.52 (152b654)
Xcode 9 GM
Detailed Environment info:
Steps to Reproduce :
1. Open any of the Above mentioned Sample.
2. Build the Sample.
Expected Result : Sample should build successfully.
Actual Result : Syntax error observed while building sample.
Screencast link :https://www.screencast.com/t/6vL7HaAy
Testsuite link : https://testrail.xamarin.com/index.php?/runs/view/52129&group_by=cases:section_id&group_order=asc&group_id=339735
Test case link : https://testrail.xamarin.com/index.php?/tests/view/19180866&group_by=cases:section_id&group_order=asc&group_id=339735
Reproducible : 100%
Attaching IDE Logs
Please attach the build logs (there's nothing useful in your attachment) and/or paste the errors inside the comments.
I could successfully build the samples Drag And Drop Custom View and Drag and Drop TableView with device and simulator config.
## Build Log for Custom View: https://gist.github.com/GouriKumari/4db873166d30fd24c84352f02769665d
## Test Env:
Update: I could reproduce this issue with CoreMLVision sample. This seems to be an issue caused by usage of C#7.0 in VS2015.
##Build Log: https://gist.github.com/GouriKumari/b7bbc67dc2152529a8dbe75f6ad81cf5
Samples need to be updated to work on both VS2015 and VS2017.
Some of these are C# 6.0 features, released in 2015, so they should be fine, for example, the `out` keyword in a method call:
`GetPrediction(inputFp, out var err2);`
The actual build errors from the IDE would be much more useful than the entire build log in this case. I will investigate if any of these are actually C#7 features, but C#6 I think should be acceptable?
C:\Users\gourik\Downloads\CoreMLImageRecognition\CoreMLImageRecognition\MachineLearningModel.cs(77,46,77,49): error CS1003: Syntax error, ',' expected
1>C:\Users\gourik\Downloads\CoreMLImageRecognition\CoreMLImageRecognition\MachineLearningModel.cs(99,66,99,71): error CS1003: Syntax error, ',' expected
1>C:\Users\gourik\Downloads\CoreMLImageRecognition\CoreMLImageRecognition\MachineLearningModel.cs(105,59,105,63): error CS1003: Syntax error, ',' expected
I was referring to defining variable with 'out' keyword. I think this is a c#7.0 feature. Also, these samples work with VS2017.
I think we've fixed all of these in commit
Hopefully we can resolve after re-testing.
All next samples build successfully with VS17:
VS17 - https://gist.github.com/mykyta-bondarenko-gl/a68fd2a840aed0612567ff89b2b12a8d