rust/tests/run-make/crate-loading/multiple-dep-versions-3.rs

#![crate_name = "foo"]
#![crate_type = "rlib"]

extern crate dependency;
pub use dependency::Type;
pub struct OtherType;
impl dependency::Trait for OtherType {
    fn foo(&self) {}
    fn bar() {}
}
Detect multiple crate versions on method not found When a type comes indirectly from one crate version but the imported trait comes from a separate crate version, the called method won't be found. We now show additional context: ``` error[E0599]: no method named `foo` found for struct `dep_2_reexport::Type` in the current scope --> multiple-dep-versions.rs:8:10 \| 8 \| Type.foo(); \| ^^^ method not found in `Type` \| note: you have multiple different versions of crate `dependency` in your dependency graph --> multiple-dep-versions.rs:4:32 \| 4 \| use dependency::{do_something, Trait}; \| ^^^^^ `dependency` imported here doesn't correspond to the right crate version \| ::: ~/rust/build/x86_64-unknown-linux-gnu/test/run-make/crate-loading/rmake_out/multiple-dep-versions-1.rs:4:1 \| 4 \| pub trait Trait { \| --------------- this is the trait that was imported \| ::: ~/rust/build/x86_64-unknown-linux-gnu/test/run-make/crate-loading/rmake_out/multiple-dep-versions-2.rs:4:1 \| 4 \| pub trait Trait { \| --------------- this is the trait that is needed 5 \| fn foo(&self); \| --- the method is available for `dep_2_reexport::Type` here ``` 2024-08-07 10:08:43 -05:00			`#![crate_name = "foo"]`
			`#![crate_type = "rlib"]`

			`extern crate dependency;`
			`pub use dependency::Type;`
Tweak detection of multiple crate versions to be more ecompassing Previously, we only emitted the additional context if the type was in the same crate as the trait that appeared multiple times in the dependency tree. Now, we look at all traits looking for two with the same name in different crates with the same crate number, and we are more flexible looking for the types involved. This will work even if the type that implements the wrong trait version is from a different crate entirely. ``` error[E0277]: the trait bound `CustomErrorHandler: ErrorHandler` is not satisfied --> src/main.rs:5:17 \| 5 \| cnb_runtime(CustomErrorHandler {}); \| ----------- ^^^^^^^^^^^^^^^^^^^^^ the trait `ErrorHandler` is not implemented for `CustomErrorHandler` \| \| \| required by a bound introduced by this call \| help: you have multiple different versions of crate `c` in your dependency graph --> src/main.rs:1:5 \| 1 \| use b::CustomErrorHandler; \| ^ one version of crate `c` is used here, as a dependency of crate `b` 2 \| use c::cnb_runtime; \| ^ one version of crate `c` is used here, as a direct dependency of the current crate note: two types coming from two different versions of the same crate are different types even if they look the same --> /home/gh-estebank/testcase-rustc-crate-version-mismatch/c-v0.2/src/lib.rs:1:1 \| 1 \| pub trait ErrorHandler {} \| ^^^^^^^^^^^^^^^^^^^^^^ this is the required trait \| ::: /home/gh-estebank/testcase-rustc-crate-version-mismatch/b/src/lib.rs:1:1 \| 1 \| pub struct CustomErrorHandler {} \| ----------------------------- this type doesn't implement the required trait \| ::: /home/gh-estebank/testcase-rustc-crate-version-mismatch/c-v0.1/src/lib.rs:1:1 \| 1 \| pub trait ErrorHandler {} \| ---------------------- this is the found trait = help: you can use `cargo tree` to explore your dependency tree note: required by a bound in `cnb_runtime` --> /home/gh-estebank/testcase-rustc-crate-version-mismatch/c-v0.2/src/lib.rs:3:41 \| 3 \| pub fn cnb_runtime(_error_handler: impl ErrorHandler) {} \| ^^^^^^^^^^^^ required by this bound in `cnb_runtime` ``` Fix #89143. 2024-08-08 16:35:25 -05:00			`pub struct OtherType;`
			`impl dependency::Trait for OtherType {`
			`fn foo(&self) {}`
			`fn bar() {}`
			`}`