Powershell: Throwing an exception with more than 143 contiguous non-breaking characters doesn't throw

[craigktreasure]

Description

If you throw with a message containing more than 143 contiguous non-breaking characters, script execution halts without any output.

Steps to reproduce

On Windows (unsure about other platforms), put the following in a test.ps1 file:

throw 'This will not throw because it contains more than 143 contiguous non-breaking characters: C:\Users\foo\bar\really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really\filename'

Run the script: .\test.ps1.

Expected behavior

~\Desktop> .\test.ps1
Exception: C:\Users\me\Desktop\test.ps1:1
Line |
   1 |  throw 'This will not throw because it contains more than 143 contiguo …
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | This will not throw because it contains more than 143 contiguous non-breaking characters:
     | C:\Users\foo\bar\really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really\filename

Actual behavior

The script exits without any information at all and a good exit code.

~\Desktop> .\test.ps1
~\Desktop> $LASTEXITCODE
0

Environment data

Name                           Value
----                           -----
PSVersion                      7.0.0
PSEdition                      Core
GitCommitId                    7.0.0
OS                             Microsoft Windows 10.0.19041
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Tests

# This will not throw because it contains more than 143 contiguous non-breaking characters
throw 'This will not throw because it contains more than 143 contiguous non-breaking characters: C:\Users\foo\bar\really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really\filename'

# Same result
throw 'C:\Users\foo\bar\really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really\filename'

# Subtracting a sinlge character results in expected behavior
throw 'C:\Users\foo\bar\really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really.really\filenam'

[iSazonov]

I can not able to reproduce. Please start pwsh -NoProfile and check again.

[craigktreasure]

Yep. Repros with pwsh -NoProfile. I've got a co-worker who can repro it as well.

[craigktreasure]

Make sure you run it from a file! I can't repro it otherwise.

[iSazonov]

Yes, I try from file and can not repo.
Could you please check with 7.0 Preview1?

[iSazonov]

Can you repo with command like throw 'a'*500?

[craigktreasure]

Yes, I can repro with throw 'a'*500.

Interesting, it does appear to be throwing correctly with 7.1.0-preview.1.

[craigktreasure]

I can also repro on Ubuntu with 7.0.0.

[iSazonov]

/cc @SteveL-MSFT Do we want to have a servicing fix for 7.0 LTS?

[craigktreasure]

Quick update. I'm only able to repro this in 7.0.0. 6.2.4 and 7.1.0-preview.1 do not appear to have this issue.

[craigktreasure]

I'm no longer able to repro in 7.0.1. Looks like the underlying cause was fixed.