protoparse: ParseFiles allows case insensitive duplicate enum values #439
Description
ParseFiles doesn't do the same check as protoc for case-insensitive duplicate enums.
syntax = "proto3";
package a;
enum Success {
SUCCESS_UNSPECIFIED = 0;
SUCCESS_unspecified = 1;
}protoc result:
a.proto:7:3: Enum name SUCCESS_unspecified has the same name as SUCCESS_UNSPECIFIED if you ignore case and strip out the enum name prefix (if any). This is error-prone and can lead to undefined behavior. Please avoid doing this. If you are using allow_alias, please assign the same numeric value to both enums.
This is similar to #358