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-rw-r--r--compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs4
1 files changed, 1 insertions, 3 deletions
diff --git a/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs b/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs
index ace15cfb0..3dc0ac033 100644
--- a/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs
@@ -27,8 +27,6 @@ use rustc_middle::ty::Instance;
use std::cell::RefCell;
use std::ffi::CString;
-use std::iter;
-
pub mod mapgen;
const UNUSED_FUNCTION_COUNTER_ID: CounterValueReference = CounterValueReference::START;
@@ -201,7 +199,7 @@ fn declare_unused_fn<'tcx>(cx: &CodegenCx<'_, 'tcx>, def_id: DefId) -> Instance<
tcx.symbol_name(instance).name,
cx.fn_abi_of_fn_ptr(
ty::Binder::dummy(tcx.mk_fn_sig(
- iter::once(tcx.mk_unit()),
+ [tcx.mk_unit()],
tcx.mk_unit(),
false,
hir::Unsafety::Unsafe,