src/test/ui/tuple/tuple-struct-fields/test.stderr

error: expected one of `)` or `,`, found `(`
  --> $DIR/test.rs:4:26
   |
LL |     struct S2(pub((foo)) ());
   |                          ^ expected one of `)` or `,` here

error[E0412]: cannot find type `foo` in this scope
  --> $DIR/test.rs:4:20
   |
LL |     struct S2(pub((foo)) ());
   |                    ^^^ not found in this scope

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0412`.