src/Sema.zig                                                   | 29 +++++++++++++++++------------
 test/cases/compile_errors/function_returning_opaque_type.zig   | 12 ++++++------
 test/cases/compile_errors/invalid_error_union_payload_type.zig |  7 +++++++
 3 files changed, 30 insertions(+), 18 deletions(-)