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Updated Error mesage to new format for E0221 #35507

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merged 2 commits into from
Aug 10, 2016
Merged

Updated Error mesage to new format for E0221 #35507

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a403ddf
Updated E0221 message to new format!
hank-der-hafenarbeiter Aug 8, 2016
6eb0218
updated unit test!
hank-der-hafenarbeiter Aug 8, 2016
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10 changes: 6 additions & 4 deletions src/librustc_typeck/astconv.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1281,10 +1281,12 @@ impl<'o, 'gcx: 'tcx, 'tcx> AstConv<'gcx, 'tcx>+'o {
}

if bounds.len() > 1 {
let mut err = struct_span_err!(self.tcx().sess, span, E0221,
"ambiguous associated type `{}` in bounds of `{}`",
assoc_name,
ty_param_name);
let mut err = struct_span_err!(
self.tcx().sess, span, E0221,
"ambiguous associated type `{}` in bounds of `{}`",
assoc_name,
ty_param_name);
err.span_label(span, &format!("ambiguous associated type `{}`", assoc_name));

for bound in &bounds {
span_note!(&mut err, span,
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3 changes: 3 additions & 0 deletions src/test/compile-fail/associated-type-projection-from-multiple-supertraits.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -28,19 +28,22 @@ pub trait BoxCar : Box + Vehicle {

fn dent<C:BoxCar>(c: C, color: C::Color) {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
//~| NOTE ambiguous associated type `Color`
//~| NOTE could derive from `Vehicle`
//~| NOTE could derive from `Box`
}

fn dent_object<COLOR>(c: BoxCar<Color=COLOR>) {
//~^ ERROR ambiguous associated type
//~| ERROR the value of the associated type `Color` (from the trait `Vehicle`) must be specified
//~| NOTE ambiguous associated type `Color`
//~| NOTE could derive from `Vehicle`
//~| NOTE could derive from `Box`
}

fn paint<C:BoxCar>(c: C, d: C::Color) {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
//~| NOTE ambiguous associated type `Color`
//~| NOTE could derive from `Vehicle`
//~| NOTE could derive from `Box`
}
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