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Fix merge panic (#35606)

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To prevent potential bugs, the logic in #35543 makes `gitcmd.Command`
panic when attempting to override stdout or stderr. Instead of using
`PrepareCmd`, this PR now uses the WithXXX methods directly to avoid the
panic.

Fix #35603
This commit is contained in:
Lunny Xiao
2025-10-11 19:24:00 -07:00
committed by GitHub
parent 24a595c3fc
commit 662a44d924
6 changed files with 114 additions and 18 deletions
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9
services/pull/merge_prepare.go
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@@ -32,6 +32,9 @@ type mergeContext struct {
env []string
}
// PrepareGitCmd prepares a git command with the correct directory, environment, and output buffers
// This function can only be called with gitcmd.Run()
// Do NOT use it with gitcmd.RunStd*() functions, otherwise it will panic
func (ctx *mergeContext) PrepareGitCmd(cmd *gitcmd.Command) *gitcmd.Command {
ctx.outbuf.Reset()
ctx.errbuf.Reset()
@@ -73,7 +76,11 @@ func createTemporaryRepoForMerge(ctx context.Context, pr *issues_model.PullReque
}
if expectedHeadCommitID != "" {
trackingCommitID, _, err := mergeCtx.PrepareGitCmd(gitcmd.NewCommand("show-ref", "--hash").AddDynamicArguments(git.BranchPrefix + trackingBranch)).RunStdString(ctx)
trackingCommitID, _, err := gitcmd.NewCommand("show-ref", "--hash").
AddDynamicArguments(git.BranchPrefix + trackingBranch).
WithEnv(mergeCtx.env).
WithDir(mergeCtx.tmpBasePath).
RunStdString(ctx)
if err != nil {
defer cancel()
log.Error("failed to get sha of head branch in %-v: show-ref[%s] --hash refs/heads/tracking: %v", mergeCtx.pr, mergeCtx.tmpBasePath, err)