tests/noprelude/diagnostics/template-instantiation-context.g:
   14 |     return 5454
      |            ^~~~
      | Error: return value type mismatch.
     ...
   12 | ct_string someFunc( $T x )
      | ~~~~~~~~~~~~~~~~~~~~~~~~~~
      | In the template function declared here.
     ...
   17 | if !check( higherTpl( someFunc, "meh" ) == "higher: someFunc2: meh", "higher order template test 2" )
      |                       ~~~~~~~~
      |                  Instantiated here.
