From 92b31ccb73223da007e427823b192dab0a86b91b Mon Sep 17 00:00:00 2001 From: Takayuki Maeda Date: Mon, 1 Aug 2022 12:52:30 +0900 Subject: [PATCH] avoid `Ty` to `String` conversions --- .../src/traits/error_reporting/on_unimplemented.rs | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs index 7e8872d901828..e6907637c57b6 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs @@ -223,8 +223,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> { if let Some(def) = aty.ty_adt_def() { // We also want to be able to select the slice's type's original // signature with no type arguments resolved - let type_string = self.tcx.type_of(def.did()).to_string(); - flags.push((sym::_Self, Some(format!("[{type_string}]")))); + flags.push((sym::_Self, Some(format!("[{}]", self.tcx.type_of(def.did()))))); } if aty.is_integral() { flags.push((sym::_Self, Some("[{integral}]".to_string()))); @@ -242,10 +241,10 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> { if let Some(def) = aty.ty_adt_def() { // We also want to be able to select the array's type's original // signature with no type arguments resolved - let type_string = self.tcx.type_of(def.did()).to_string(); - flags.push((sym::_Self, Some(format!("[{type_string}; _]")))); + let def_ty = self.tcx.type_of(def.did()); + flags.push((sym::_Self, Some(format!("[{def_ty}; _]")))); if let Some(n) = len { - flags.push((sym::_Self, Some(format!("[{type_string}; {n}]")))); + flags.push((sym::_Self, Some(format!("[{def_ty}; {n}]")))); } } if aty.is_integral() {