setupShell would update the shell stored on the `Step` object to a new interpolated value. If the expression evaluation was interpolated with reference to a matrix input to the job, that shell can be written to multiple *different* values for each RunContext, resulting in a data race that causes incorrect shells to be used for each concurrent matrix run.
==================
WARNING: DATA RACE
Write at 0x00c00013e9b0 by goroutine 1470:
code.forgejo.org/forgejo/runner/v9/act/runner.(*stepRun).setupShell()
/.../forgejo-runner/act/runner/step_run.go:210 +0x8f2
code.forgejo.org/forgejo/runner/v9/act/common/git.FindGitRevision()
/.../forgejo-runner/act/common/git/git.go:58 +0xc4
code.forgejo.org/forgejo/runner/v9/act/model.(*GithubContext).SetSha()
/.../forgejo-runner/act/model/github_context.go:161 +0x6b5
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).getGithubContext()
/.../forgejo-runner/act/runner/run_context.go:1228 +0x26ca
...
Previous write at 0x00c00013e9b0 by goroutine 1469:
code.forgejo.org/forgejo/runner/v9/act/runner.(*stepRun).setupShell()
/.../forgejo-runner/act/runner/step_run.go:210 +0x8f2
code.forgejo.org/forgejo/runner/v9/act/common/git.FindGitRevision()
/.../forgejo-runner/act/common/git/git.go:58 +0xc4
code.forgejo.org/forgejo/runner/v9/act/model.(*GithubContext).SetSha()
/.../forgejo-runner/act/model/github_context.go:161 +0x6b5
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).getGithubContext()
/.../forgejo-runner/act/runner/run_context.go:1228 +0x26ca
...
==================
|
||
|---|---|---|
| .. | ||
| testdata | ||
| action.go | ||
| github_context.go | ||
| github_context_test.go | ||
| job_context.go | ||
| planner.go | ||
| planner_test.go | ||
| step_result.go | ||
| workflow.go | ||
| workflow_test.go | ||