Argument null exception in MSBuild condition

When I try to compile a project I get the following output:

Invoke-Expression : Das Argument kann nicht an den Parameter "Command" gebunden werden, da es NULL ist.In 
D:\Users\muellerj\AppData\Local\Microsoft\VisualStudio\15.0_00aec18c\Extensions\mlnt0wvb.2aa\clang-build.ps1:1066 Zeichen:36
+   [bool] $res = (Invoke-Expression $expression) -eq $true
+                                    ~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Invoke-Expression], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.InvokeExpressionCommand

Is there some verbosity switch, so that I can check which expression is causing the issue?

[hero101111]

Hi,

I’ve pushed a fix for these issues. Grab the latest clang-build.ps1 from Github and let us know if it solves your project specific issues.

Regards, Gabriel

---

This fix is currently live only for the github repository. The latest Visual Studio extension (2.2) does not contain the fix. It will be included in the next release.

Until then, as a workaround, you can manually replace clang-build.ps1 in the VS extension directory with the latest from github. To locate the extension directory search for clang-build.ps1 in %LOCALAPPDATA%

Don’t forget to restart Visual Studio after replacing the script file.

[hero101111]

Hi,

Indeed, the issue arose from the $(Selector.Contains(Three)) expression. Three here is intended to be a string, but since there no quotes the interpreter thinks it’s a command or a variable.

We do not support string values that are not wrapped in quotes.

To get your project to compile just wrap Three in single quotes, as follows: $(MySelector.Contains('Three'))

I’ve tested and it works in both Visual C++ and ClangPowerTools.

Regards, Gabriel