// RUN: %swift -target x86_64-unknown-windows-msvc -emit-ir -verify %s

sil_stage canonical

// expected-error@+1{{attribute 'weak_imported' is unsupported on target 'x86_64-unknown-windows-msvc'}}
sil [weak_imported] @f : $@convention(thin) () -> () {
  %unit = tuple()
  return %unit : $()
}