[release/v7.6.5] Fix the dot-sourcing behavior of pwsh -file for advanced-function scripts - #27762
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Patrick Meinecke (SeeminglyScience)
August 4, 2026 20:57
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Pull request overview
Backports the fix from #27727 to ensure pwsh -file executes signed advanced-function scripts consistently with signed simple scripts in WDAC/CLM scenarios by aligning when ValidateCompatibleLanguageMode is invoked.
Changes:
- Exposes
PSScriptCmdlet’s “rethrow exit” flag via an internal getter for use by other engine components. - Updates
CommandProcessorto skipValidateCompatibleLanguageModefor dotted scripts when the invocation is the non--noexit-Filepath, matching the simple-script processor behavior.
Reviewed changes
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| File | Description |
|---|---|
| src/System.Management.Automation/engine/runtime/CompiledScriptBlock.cs | Adds an internal accessor to surface whether the script cmdlet should rethrow exit, enabling consistent gating logic elsewhere. |
| src/System.Management.Automation/engine/CommandProcessor.cs | Aligns advanced-function script initialization with simple-script behavior by skipping cross-language-mode validation in the non--noexit -File case. |
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Backport of #27727 to release/v7.6.5
Triggered by Patrick Meinecke (@SeeminglyScience) on behalf of Dongbo Wang (@daxian-dbw)
Original CL Label: CL-Engine
/cc @PowerShell/powershell-maintainers
Impact
REQUIRED: Choose either Tooling Impact or Customer Impact (or both). At least one checkbox must be selected.
Tooling Impact
Customer Impact
Fixes inconsistent WDAC behavior where signed advanced-function scripts failed under pwsh -file while signed simple scripts succeeded. Aligns both code paths so non-noexit file execution behaves consistently.
Regression
REQUIRED: Check exactly one box.
This is not a regression.
Testing
Validated by original PR scenario coverage for WDAC mode and pwsh -file advanced-function behavior; this backport is a direct cherry-pick with no conflict changes.
Risk
REQUIRED: Check exactly one box.
Engine behavior change is narrowly scoped to the language-mode compatibility check path for script invocation and keeps existing -noexit behavior intact.