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-rw-r--r--services/gitdiff/gitdiff.go12
1 files changed, 11 insertions, 1 deletions
diff --git a/services/gitdiff/gitdiff.go b/services/gitdiff/gitdiff.go
index f843bc4dcf..614f8104ec 100644
--- a/services/gitdiff/gitdiff.go
+++ b/services/gitdiff/gitdiff.go
@@ -839,7 +839,12 @@ parsingLoop:
case strings.HasPrefix(line, "--- "):
// Handle ambiguous filenames
if curFile.IsAmbiguous {
- if len(line) > 6 && line[4] == 'a' {
+ // The shortest string that can end up here is:
+ // "--- a\t\n" without the qoutes.
+ // This line has a len() of 7 but doesn't contain a oldName.
+ // So the amount that the line need is at least 8 or more.
+ // The code will otherwise panic for a out-of-bounds.
+ if len(line) > 7 && line[4] == 'a' {
curFile.OldName = line[6 : len(line)-1]
if line[len(line)-2] == '\t' {
curFile.OldName = curFile.OldName[:len(curFile.OldName)-1]
@@ -1194,6 +1199,11 @@ func readFileName(rd *strings.Reader) (string, bool) {
_ = rd.UnreadByte()
if char == '"' {
fmt.Fscanf(rd, "%q ", &name)
+ if len(name) == 0 {
+ log.Error("Reader has no file name: %v", rd)
+ return "", true
+ }
+
if name[0] == '\\' {
name = name[1:]
}