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core/stateless: fix parsing an empty witness (#34683)
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This is to fix a crasher in keeper.
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Sina M 2026-04-09 03:19:54 +02:00 committed by GitHub
parent 21b19362c2
commit 68c7058a80
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1 changed files with 4 additions and 0 deletions
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4
core/stateless/encoding.go
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@ -17,6 +17,7 @@
package stateless
import (
"errors"
"io"
"github.com/ethereum/go-ethereum/common/hexutil"
@ -42,6 +43,9 @@ func (w *Witness) ToExtWitness() *ExtWitness {
// FromExtWitness converts the consensus witness format into our internal one.
func (w *Witness) FromExtWitness(ext *ExtWitness) error {
if len(ext.Headers) == 0 {
return errors.New("witness must contain at least one header")
}
w.Headers = ext.Headers
w.Codes = make(map[string]struct{}, len(ext.Codes))