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metadata: copy slices in FromContext() functions (#5267)

This commit is contained in:
Menghan Li 2022-03-22 14:15:22 -07:00 committed by GitHub
parent 9d088969a8
commit 2fccb822f1
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1 changed files with 6 additions and 2 deletions
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metadata/metadata.go
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@ -188,7 +188,9 @@ func FromIncomingContext(ctx context.Context) (MD, bool) {
// map, and there's no guarantee that the MD attached to the context is // map, and there's no guarantee that the MD attached to the context is
// created using our helper functions. // created using our helper functions.
key := strings.ToLower(k) key := strings.ToLower(k)
out[key] = v s := make([]string, len(v))
copy(s, v)
out[key] = s
} }
return out, true return out, true
} }
@ -226,7 +228,9 @@ func FromOutgoingContext(ctx context.Context) (MD, bool) {
// map, and there's no guarantee that the MD attached to the context is // map, and there's no guarantee that the MD attached to the context is
// created using our helper functions. // created using our helper functions.
key := strings.ToLower(k) key := strings.ToLower(k)
out[key] = v s := make([]string, len(v))
copy(s, v)
out[key] = s
} }
for _, added := range raw.added { for _, added := range raw.added {
if len(added)%2 == 1 { if len(added)%2 == 1 {