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Fix parentCommit invalid memory address or nil pointer dereference. (#33204) 

When the parent Commit does not exist on gitea, an error will be
reported when opening the Commit details page: invalid memory address or
nil pointer dereference.

![image](https://github.com/user-attachments/assets/4c2a9802-935f-41e9-b5b9-a4f0d745f709)

![image](https://github.com/user-attachments/assets/7b0bc15e-7f5f-4d58-8d24-fee667a799fa)
pull/33326/head
hiifong 2025-01-19 10:51:43 +07:00 committed by GitHub
parent dc2308a959
commit b7614e2d2f
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 12 additions and 4 deletions
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10
modules/git/diff.go
Unescape Escape View File

@ -64,7 +64,10 @@ func GetRepoRawDiffForFile(repo *Repository, startCommit, endCommit string, diff
} else if commit.ParentCount() == 0 {
cmd.AddArguments("show").AddDynamicArguments(endCommit).AddDashesAndList(files...)
} else {
c, _ := commit.Parent(0)
c, err := commit.Parent(0)
if err != nil {
return err
}
cmd.AddArguments("diff", "-M").AddDynamicArguments(c.ID.String(), endCommit).AddDashesAndList(files...)
}
case RawDiffPatch:
@ -74,7 +77,10 @@ func GetRepoRawDiffForFile(repo *Repository, startCommit, endCommit string, diff
} else if commit.ParentCount() == 0 {
cmd.AddArguments("format-patch", "--no-signature", "--stdout", "--root").AddDynamicArguments(endCommit).AddDashesAndList(files...)
} else {
c, _ := commit.Parent(0)
c, err := commit.Parent(0)
if err != nil {
return err
}
query := fmt.Sprintf("%s...%s", endCommit, c.ID.String())
cmd.AddArguments("format-patch", "--no-signature", "--stdout").AddDynamicArguments(query).AddDashesAndList(files...)
}

6
services/gitdiff/gitdiff.go
Unescape Escape View File

@ -1136,7 +1136,10 @@ func GetDiff(ctx context.Context, gitRepo *git.Repository, opts *DiffOptions, fi
} else {
actualBeforeCommitID := opts.BeforeCommitID
if len(actualBeforeCommitID) == 0 {
parentCommit, _ := commit.Parent(0)
parentCommit, err := commit.Parent(0)
if err != nil {
return nil, err
}
actualBeforeCommitID = parentCommit.ID.String()
}
@ -1145,7 +1148,6 @@ func GetDiff(ctx context.Context, gitRepo *git.Repository, opts *DiffOptions, fi
AddDynamicArguments(actualBeforeCommitID, opts.AfterCommitID)
opts.BeforeCommitID = actualBeforeCommitID
var err error
beforeCommit, err = gitRepo.GetCommit(opts.BeforeCommitID)
if err != nil {
return nil, err