1# RUN: yaml2obj %s | not obj2yaml 2>&1 | FileCheck %s
2--- !WASM
3FileHeader:
4  Version:         0x00000001
5Sections:
6  - Type:            CUSTOM
7    Name:            producers
8    Languages:
9      - Name:        C++
10        Version:     C++11
11      - Name:        C++
12        Version:     C++17
13...
14# CHECK: producers section contains repeated producer
15