Closed
Description
The following program crashes with the panic:
package main
import (
pb "github.com/dvyukov/go-fuzz/examples/protobuf/pb"
"github.com/golang/protobuf/proto"
)
func main() {
data := []byte("\n\x02\n\x00")
v := new(pb.M24)
err := proto.Unmarshal(data, v)
if err != nil {
return
}
_, err = proto.Marshal(v)
if err != nil {
panic(err)
}
}
panic: proto: map has nil element
The proto used is:
message M24 {
map<string, M2> f = 1;
}
The message should either be successfully encoded or not decoded.
on commit 34a5f24
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