No warning or error for fields with the same index

[nefilim]

for instance

messages A {
optional a = 1;
optional b = 1;
}

code gets happily generated, i'm guessing this will have runtime problems. a warning or better yet, an error would be good?

[SandroGrzicic]

What happens if you run the same example with protoc?

[nefilim]

[peter@nefilim ~]$ cat test.proto
message A {
optional uint32 a = 1;
optional uint32 b = 1;
}
[peter@nefilim ~]$ protoc --java_out=. test.proto
test.proto:3:21: Field number 1 has already been used in "A" by field "a".

[SandroGrzicic]

Alright, marking this as a bug. Thanks.