error[E0130]: patterns aren't allowed in foreign function declarations
  --> $DIR/issue-10877.rs:3:12
   |
LL |     fn foo(1: ());
   |            ^ pattern not allowed in foreign function

error[E0130]: patterns aren't allowed in foreign function declarations
  --> $DIR/issue-10877.rs:5:12
   |
LL |     fn bar((): isize);
   |            ^^ pattern not allowed in foreign function

error[E0130]: patterns aren't allowed in foreign function declarations
  --> $DIR/issue-10877.rs:7:12
   |
LL |     fn baz(Foo { x }: isize);
   |            ^^^^^^^^^ pattern not allowed in foreign function

error[E0130]: patterns aren't allowed in foreign function declarations
  --> $DIR/issue-10877.rs:9:12
   |
LL |     fn qux((x,y): ());
   |            ^^^^^ pattern not allowed in foreign function

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0130`.