diff options
4 files changed, 56 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs index 4e7d7b79ff4..20cef5e06a4 100644 --- a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs +++ b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs @@ -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 { diff --git a/tests/run-make/crate-loading-crate-depends-on-itself/foo-current.rs b/tests/run-make/crate-loading-crate-depends-on-itself/foo-current.rs new file mode 100644 index 00000000000..71b27cd85bf --- /dev/null +++ b/tests/run-make/crate-loading-crate-depends-on-itself/foo-current.rs @@ -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>(); +} diff --git a/tests/run-make/crate-loading-crate-depends-on-itself/foo-prev.rs b/tests/run-make/crate-loading-crate-depends-on-itself/foo-prev.rs new file mode 100644 index 00000000000..19d3f3c972b --- /dev/null +++ b/tests/run-make/crate-loading-crate-depends-on-itself/foo-prev.rs @@ -0,0 +1,6 @@ +#![crate_type = "lib"] +#![crate_name = "foo"] + +pub struct Struct; +pub trait Trait {} +impl Trait for Struct {} diff --git a/tests/run-make/crate-loading-crate-depends-on-itself/rmake.rs b/tests/run-make/crate-loading-crate-depends-on-itself/rmake.rs new file mode 100644 index 00000000000..f52f3d791a7 --- /dev/null +++ b/tests/run-make/crate-loading-crate-depends-on-itself/rmake.rs @@ -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"#); +} |