tool/gocross: fix environment variable clearing in gocross-wrapper.ps1

The -Environment argument to Start-Process is essentially being treated
as a delta; removing a particular variable from the argument's hash
table does not indicate to delete. Instead we must set the value of each
unwanted variable to $null.

Updates https://github.com/tailscale/corp/issues/29940

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
This commit is contained in:
Aaron Klotz
2025-08-18 15:27:16 -06:00
parent d92789affa
commit 84472167dd

View File

@@ -176,10 +176,13 @@ $bootstrapScriptBlock = {
if (-not $gocrossOk) { if (-not $gocrossOk) {
$goBuildEnv = Copy-Environment $goBuildEnv = Copy-Environment
$goBuildEnv['CGO_ENABLED'] = '0' $goBuildEnv['CGO_ENABLED'] = '0'
$goBuildEnv.Remove('GOOS') # Start-Process's -Environment arg applies diffs, so instead of removing
$goBuildEnv.Remove('GOARCH') # these variables from $goBuildEnv, we must set them to $null to indicate
$goBuildEnv.Remove('GO111MODULE') # that they should be cleared.
$goBuildEnv.Remove('GOROOT') $goBuildEnv['GOOS'] = $null
$goBuildEnv['GOARCH'] = $null
$goBuildEnv['GO111MODULE'] = $null
$goBuildEnv['GOROOT'] = $null
$procExe = Join-Path $toolchain 'bin' 'go.exe' -Resolve $procExe = Join-Path $toolchain 'bin' 'go.exe' -Resolve
$proc = Start-Process -FilePath $procExe -WorkingDirectory $repoRoot -Environment $goBuildEnv -ArgumentList 'build', '-o', $gocrossPath, "-ldflags=-X=tailscale.com/version.gitCommitStamp=$wantVer", 'tailscale.com/tool/gocross' -NoNewWindow -Wait -PassThru $proc = Start-Process -FilePath $procExe -WorkingDirectory $repoRoot -Environment $goBuildEnv -ArgumentList 'build', '-o', $gocrossPath, "-ldflags=-X=tailscale.com/version.gitCommitStamp=$wantVer", 'tailscale.com/tool/gocross' -NoNewWindow -Wait -PassThru
@@ -195,7 +198,10 @@ Start-ChildScope -ScriptBlock $bootstrapScriptBlock
$repoRoot = Get-RepoRoot $repoRoot = Get-RepoRoot
$execEnv = Copy-Environment $execEnv = Copy-Environment
$execEnv.Remove('GOROOT') # Start-Process's -Environment arg applies diffs, so instead of removing
# these variables from $execEnv, we must set them to $null to indicate
# that they should be cleared.
$execEnv['GOROOT'] = $null
$argList = Copy-ScriptArgs $argList = Copy-ScriptArgs