src/test/codegen/iter-fold-closure-no-iterator.rs

   1 //! Check that fold closures aren't generic in the iterator type.
   2 // compile-flags: -C opt-level=0
   3
   4 fn main() {
   5     (0i32..10).by_ref().count();
   6 }
   7
   8 // `count` calls `fold`, which calls `try_fold` -- that `fold` closure should
   9 // not be generic in the iterator type, only in the item type.
  10 // CHECK-NOT: {{^define.*Iterator::fold::.*closure.*Range}}