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[ci] Set __PWSH_LOGIN_CHECKED to avoid macOS pwsh 'procargs failed' startup crashes #35724

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Merged
PureWeen merged 1 commit into from
Jun 3, 2026
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[ci] Set __PWSH_LOGIN_CHECKED to avoid macOS pwsh 'procargs failed' startup crashes #35724

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9 changes: 9 additions & 0 deletions eng/pipelines/common/variables.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,15 @@ variables:
value: 26.0.1
- name: POWERSHELL_VERSION
value: 7.4.0
# Workaround for PowerShell/PowerShell#20802 (open since Nov 2023):
# pwsh 7.4.x intermittently aborts at startup on macOS with
# 'Call to procargs failed with errno 5'
# because AttemptExecPwshLogin() races on sysctl(KERN_PROCARGS2).
# Setting __PWSH_LOGIN_CHECKED makes pwsh short-circuit the login-shell
# detection that triggers the racy syscall (see Program.cs in PowerShell repo).
# Hit on internal dnceng dotnet-maui build 2990586 (release/11.0.1xx-preview5).
- name: __PWSH_LOGIN_CHECKED
value: '1'
# Localization variables
- name: LocBranchPrefix
value: 'loc-hb'
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