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Prevent NPE in CommentMustAsDiff if no hunk header (#15199)
I do not understand how this can happen or why. There is an apparent possibility for a comment.Patch to be missing a hunk header - this should not happen and do not understand how. But it appears to happen on 1.13 at least in some case. This PR will simply add a new section if the cursection is empty thus preventing the NPE. Fix #15198 Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: techknowlogick <techknowlogick@gitea.io>
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@ -1014,6 +1014,11 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
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}
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diffLine := &DiffLine{Type: DiffLineAdd, RightIdx: rightLine}
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rightLine++
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if curSection == nil {
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// Create a new section to represent this hunk
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curSection = &DiffSection{}
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curFile.Sections = append(curFile.Sections, curSection)
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}
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curSection.Lines = append(curSection.Lines, diffLine)
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case '-':
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curFileLinesCount++
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@ -1026,6 +1031,11 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
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if leftLine > 0 {
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leftLine++
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}
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if curSection == nil {
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// Create a new section to represent this hunk
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curSection = &DiffSection{}
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curFile.Sections = append(curFile.Sections, curSection)
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}
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curSection.Lines = append(curSection.Lines, diffLine)
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case ' ':
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curFileLinesCount++
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@ -1036,6 +1046,11 @@ func parseHunks(curFile *DiffFile, maxLines, maxLineCharacters int, input *bufio
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diffLine := &DiffLine{Type: DiffLinePlain, LeftIdx: leftLine, RightIdx: rightLine}
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leftLine++
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rightLine++
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if curSection == nil {
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// Create a new section to represent this hunk
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curSection = &DiffSection{}
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curFile.Sections = append(curFile.Sections, curSection)
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}
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curSection.Lines = append(curSection.Lines, diffLine)
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default:
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// This is unexpected
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