diff options
5 files changed, 93 insertions, 7 deletions
diff --git a/compiler/rustc_hir_typeck/src/demand.rs b/compiler/rustc_hir_typeck/src/demand.rs index b62f689ec6b..9ce03060e0f 100644 --- a/compiler/rustc_hir_typeck/src/demand.rs +++ b/compiler/rustc_hir_typeck/src/demand.rs @@ -370,13 +370,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // Fudge the receiver, so we can do new inference on it. let possible_rcvr_ty = possible_rcvr_ty.fold_with(&mut fudger); let method = self - .lookup_method( + .lookup_method_for_diagnostic( possible_rcvr_ty, segment, DUMMY_SP, call_expr, binding, - args, ) .ok()?; // Unify the method signature with our incompatible arg, to @@ -435,14 +434,14 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let Some(rcvr_ty) = self.node_ty_opt(rcvr.hir_id) else { continue; }; let rcvr_ty = rcvr_ty.fold_with(&mut fudger); let Ok(method) = - self.lookup_method(rcvr_ty, segment, DUMMY_SP, parent_expr, rcvr, args) + self.lookup_method_for_diagnostic(rcvr_ty, segment, DUMMY_SP, parent_expr, rcvr) else { continue; }; let ideal_rcvr_ty = rcvr_ty.fold_with(&mut fudger); let ideal_method = self - .lookup_method(ideal_rcvr_ty, segment, DUMMY_SP, parent_expr, rcvr, args) + .lookup_method_for_diagnostic(ideal_rcvr_ty, segment, DUMMY_SP, parent_expr, rcvr) .ok() .and_then(|method| { let _ = self.at(&ObligationCause::dummy(), self.param_env) diff --git a/compiler/rustc_hir_typeck/src/method/confirm.rs b/compiler/rustc_hir_typeck/src/method/confirm.rs index 98529b66602..6cd7bd5d196 100644 --- a/compiler/rustc_hir_typeck/src/method/confirm.rs +++ b/compiler/rustc_hir_typeck/src/method/confirm.rs @@ -26,6 +26,7 @@ struct ConfirmContext<'a, 'tcx> { span: Span, self_expr: &'tcx hir::Expr<'tcx>, call_expr: &'tcx hir::Expr<'tcx>, + skip_record_for_diagnostics: bool, } impl<'a, 'tcx> Deref for ConfirmContext<'a, 'tcx> { @@ -59,6 +60,20 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let mut confirm_cx = ConfirmContext::new(self, span, self_expr, call_expr); confirm_cx.confirm(unadjusted_self_ty, pick, segment) } + + pub fn confirm_method_for_diagnostic( + &self, + span: Span, + self_expr: &'tcx hir::Expr<'tcx>, + call_expr: &'tcx hir::Expr<'tcx>, + unadjusted_self_ty: Ty<'tcx>, + pick: &probe::Pick<'tcx>, + segment: &hir::PathSegment<'_>, + ) -> ConfirmResult<'tcx> { + let mut confirm_cx = ConfirmContext::new(self, span, self_expr, call_expr); + confirm_cx.skip_record_for_diagnostics = true; + confirm_cx.confirm(unadjusted_self_ty, pick, segment) + } } impl<'a, 'tcx> ConfirmContext<'a, 'tcx> { @@ -68,7 +83,7 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> { self_expr: &'tcx hir::Expr<'tcx>, call_expr: &'tcx hir::Expr<'tcx>, ) -> ConfirmContext<'a, 'tcx> { - ConfirmContext { fcx, span, self_expr, call_expr } + ConfirmContext { fcx, span, self_expr, call_expr, skip_record_for_diagnostics: false } } fn confirm( @@ -219,7 +234,9 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> { self.register_predicates(autoderef.into_obligations()); // Write out the final adjustments. - self.apply_adjustments(self.self_expr, adjustments); + if !self.skip_record_for_diagnostics { + self.apply_adjustments(self.self_expr, adjustments); + } target } @@ -453,7 +470,10 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> { }); debug!("instantiate_method_substs: user_type_annotation={:?}", user_type_annotation); - self.fcx.write_user_type_annotation(self.call_expr.hir_id, user_type_annotation); + + if !self.skip_record_for_diagnostics { + self.fcx.write_user_type_annotation(self.call_expr.hir_id, user_type_annotation); + } } self.normalize(self.span, substs) diff --git a/compiler/rustc_hir_typeck/src/method/mod.rs b/compiler/rustc_hir_typeck/src/method/mod.rs index 6f4d674ba10..dabade36589 100644 --- a/compiler/rustc_hir_typeck/src/method/mod.rs +++ b/compiler/rustc_hir_typeck/src/method/mod.rs @@ -254,6 +254,27 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { Ok(result.callee) } + pub fn lookup_method_for_diagnostic( + &self, + self_ty: Ty<'tcx>, + segment: &hir::PathSegment<'_>, + span: Span, + call_expr: &'tcx hir::Expr<'tcx>, + self_expr: &'tcx hir::Expr<'tcx>, + ) -> Result<MethodCallee<'tcx>, MethodError<'tcx>> { + let pick = self.lookup_probe_for_diagnostic( + segment.ident, + self_ty, + call_expr, + ProbeScope::TraitsInScope, + None, + )?; + + Ok(self + .confirm_method_for_diagnostic(span, self_expr, call_expr, self_ty, &pick, segment) + .callee) + } + #[instrument(level = "debug", skip(self, call_expr))] pub fn lookup_probe( &self, diff --git a/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.rs b/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.rs new file mode 100644 index 00000000000..0c2d71707c9 --- /dev/null +++ b/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.rs @@ -0,0 +1,29 @@ +pub trait NSWindow: Sized { + fn frame(self) -> () { + unimplemented!() + } + fn setFrame_display_(self, display: ()) {} +} +impl NSWindow for () {} + +pub struct NSRect {} + +use std::ops::Deref; +struct MainThreadSafe<T = ()>(T); +impl<T> Deref for MainThreadSafe<T> { + type Target = T; + + fn deref(&self) -> &T { + unimplemented!() + } +} + +fn main() { + || { + let ns_window = MainThreadSafe(()); + // Don't record adjustments twice for `*ns_window` + (*ns_window).frame(); + ns_window.setFrame_display_(0); + //~^ ERROR mismatched types + }; +} diff --git a/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.stderr b/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.stderr new file mode 100644 index 00000000000..02e87d701b6 --- /dev/null +++ b/tests/ui/typeck/dont-record-adjustments-when-pointing-at-arg.stderr @@ -0,0 +1,17 @@ +error[E0308]: mismatched types + --> $DIR/dont-record-adjustments-when-pointing-at-arg.rs:26:37 + | +LL | ns_window.setFrame_display_(0); + | ----------------- ^ expected `()`, found integer + | | + | arguments to this method are incorrect + | +note: method defined here + --> $DIR/dont-record-adjustments-when-pointing-at-arg.rs:5:8 + | +LL | fn setFrame_display_(self, display: ()) {} + | ^^^^^^^^^^^^^^^^^ ----------- + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. |