Do not call extern_crate
on current trait on crate mismatch errors
When we encounter an error caused by traits/types of different versions of the same crate, filter out the current crate when collecting spans to add to the context so we don't call `extern_crate` on the `DefId` of the current crate, which is meaningless and ICEs.
Produced output with this filter:
```
error[E0277]: the trait bound `foo::Struct: Trait` is not satisfied
--> y.rs:13:19
|
13 | check_trait::<foo::Struct>();
| ^^^^^^^^^^^ the trait `Trait` is not implemented for `foo::Struct`
|
note: there are multiple different versions of crate `foo` in the dependency graph
--> y.rs:7:1
|
4 | extern crate foo;
| ----------------- one version of crate `foo` is used here, as a direct dependency of the current crate
5 |
6 | pub struct Struct;
| ----------------- this type implements the required trait
7 | pub trait Trait {}
| ^^^^^^^^^^^^^^^ this is the required trait
|
::: x.rs:4:1
|
4 | pub struct Struct;
| ----------------- this type doesn't implement the required trait
5 | pub trait Trait {}
| --------------- this is the found trait
= note: two types coming from two different versions of the same crate are different types even if they look the same
= help: you can use `cargo tree` to explore your dependency tree
note: required by a bound in `check_trait`
--> y.rs:10:19
|
10 | fn check_trait<T: Trait>() {}
| ^^^^^ required by this bound in `check_trait`
```
Fix #133563.
(cherry picked from commit 8574f374e2
)
This commit is contained in:
parent
0857a8e32c
commit
21c75ad1cc
4 changed files with 56 additions and 0 deletions
|
@ -1732,6 +1732,10 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
|
|||
span.push_span_label(self.tcx.def_span(trait_def_id), "this is the required trait");
|
||||
for (sp, label) in [trait_def_id, other_trait_def_id]
|
||||
.iter()
|
||||
// The current crate-version might depend on another version of the same crate
|
||||
// (Think "semver-trick"). Do not call `extern_crate` in that case for the local
|
||||
// crate as that doesn't make sense and ICEs (#133563).
|
||||
.filter(|def_id| !def_id.is_local())
|
||||
.filter_map(|def_id| self.tcx.extern_crate(def_id.krate))
|
||||
.map(|data| {
|
||||
let dependency = if data.dependency_of == LOCAL_CRATE {
|
||||
|
|
|
@ -0,0 +1,14 @@
|
|||
#![crate_type = "lib"]
|
||||
#![crate_name = "foo"]
|
||||
|
||||
extern crate foo;
|
||||
|
||||
pub struct Struct;
|
||||
pub trait Trait {}
|
||||
impl Trait for Struct {}
|
||||
|
||||
fn check_trait<T: Trait>() {}
|
||||
|
||||
fn ice() {
|
||||
check_trait::<foo::Struct>();
|
||||
}
|
|
@ -0,0 +1,6 @@
|
|||
#![crate_type = "lib"]
|
||||
#![crate_name = "foo"]
|
||||
|
||||
pub struct Struct;
|
||||
pub trait Trait {}
|
||||
impl Trait for Struct {}
|
|
@ -0,0 +1,32 @@
|
|||
//@ only-linux
|
||||
//@ ignore-wasm32
|
||||
//@ ignore-wasm64
|
||||
// ignore-tidy-linelength
|
||||
|
||||
// Verify that if the current crate depends on a different version of the same crate, *and* types
|
||||
// and traits of the different versions are mixed, we produce diagnostic output and not an ICE.
|
||||
// #133563
|
||||
|
||||
use run_make_support::{rust_lib_name, rustc};
|
||||
|
||||
fn main() {
|
||||
rustc().input("foo-prev.rs").run();
|
||||
|
||||
rustc()
|
||||
.extra_filename("current")
|
||||
.metadata("current")
|
||||
.input("foo-current.rs")
|
||||
.extern_("foo", rust_lib_name("foo"))
|
||||
.run_fail()
|
||||
.assert_stderr_contains(r#"
|
||||
note: there are multiple different versions of crate `foo` in the dependency graph
|
||||
--> foo-current.rs:7:1
|
||||
|
|
||||
4 | extern crate foo;
|
||||
| ----------------- one version of crate `foo` is used here, as a direct dependency of the current crate
|
||||
5 |
|
||||
6 | pub struct Struct;
|
||||
| ----------------- this type implements the required trait
|
||||
7 | pub trait Trait {}
|
||||
| ^^^^^^^^^^^^^^^ this is the required trait"#);
|
||||
}
|
Loading…
Add table
Reference in a new issue