diff options
3 files changed, 29 insertions, 13 deletions
diff --git a/compiler/rustc_middle/src/ty/diagnostics.rs b/compiler/rustc_middle/src/ty/diagnostics.rs index d8d476d3fef..8c22df7395f 100644 --- a/compiler/rustc_middle/src/ty/diagnostics.rs +++ b/compiler/rustc_middle/src/ty/diagnostics.rs @@ -3,8 +3,8 @@ use std::ops::ControlFlow; use crate::ty::{ - visit::TypeVisitable, AliasTy, Const, ConstKind, DefIdTree, ExistentialPredicate, InferConst, - InferTy, Opaque, PolyTraitPredicate, Ty, TyCtxt, TypeSuperVisitable, TypeVisitor, + visit::TypeVisitable, AliasTy, Const, ConstKind, DefIdTree, InferConst, InferTy, Opaque, + PolyTraitPredicate, Ty, TyCtxt, TypeSuperVisitable, TypeVisitor, }; use rustc_data_structures::fx::FxHashMap; @@ -469,17 +469,6 @@ impl<'tcx> TypeVisitor<'tcx> for IsSuggestableVisitor<'tcx> { } } - Dynamic(dty, _, _) => { - for pred in *dty { - match pred.skip_binder() { - ExistentialPredicate::Trait(_) | ExistentialPredicate::Projection(_) => { - // Okay - } - _ => return ControlFlow::Break(()), - } - } - } - Param(param) => { // FIXME: It would be nice to make this not use string manipulation, // but it's pretty hard to do this, since `ty::ParamTy` is missing diff --git a/src/test/ui/argument-suggestions/display-is-suggestable.rs b/src/test/ui/argument-suggestions/display-is-suggestable.rs new file mode 100644 index 00000000000..d765bc4f74d --- /dev/null +++ b/src/test/ui/argument-suggestions/display-is-suggestable.rs @@ -0,0 +1,8 @@ +use std::fmt::Display; + +fn foo(x: &(dyn Display + Send)) {} + +fn main() { + foo(); + //~^ ERROR this function takes 1 argument but 0 arguments were supplied +} diff --git a/src/test/ui/argument-suggestions/display-is-suggestable.stderr b/src/test/ui/argument-suggestions/display-is-suggestable.stderr new file mode 100644 index 00000000000..edd72b53eb3 --- /dev/null +++ b/src/test/ui/argument-suggestions/display-is-suggestable.stderr @@ -0,0 +1,19 @@ +error[E0061]: this function takes 1 argument but 0 arguments were supplied + --> $DIR/display-is-suggestable.rs:6:5 + | +LL | foo(); + | ^^^-- an argument of type `&dyn std::fmt::Display + Send` is missing + | +note: function defined here + --> $DIR/display-is-suggestable.rs:3:4 + | +LL | fn foo(x: &(dyn Display + Send)) {} + | ^^^ ------------------------ +help: provide the argument + | +LL | foo(/* &dyn std::fmt::Display + Send */); + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0061`. |