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Enhance EII UI tests #160927

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849a980
Enable all EII tests on Windows MSVC
AsakuraMizu Aug 7, 2026
e2d6f1a
Normalize EII dylib test coverage
AsakuraMizu Aug 8, 2026
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1 change: 1 addition & 0 deletions tests/ui/eii/default/auxiliary/decl_with_default.rs
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//@ no-prefer-dynamic
//@[dylib] compile-flags: --crate-type=dylib -Cprefer-dynamic
#![crate_type = "rlib"]

@bjorn3 bjorn3 Aug 11, 2026 •
edited by rustbot
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I believe this and a couple other tests are missing a //@ revisions. In addition I'm not sure if --crate-type or #![crate_type] would win. Pleasw don't use the at the same time.

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#![feature(extern_item_impls)]

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1 change: 1 addition & 0 deletions tests/ui/eii/default/auxiliary/decl_with_default_panics.rs
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//@ no-prefer-dynamic
//@ needs-unwind
//@ exec-env:RUST_BACKTRACE=1
#![crate_type = "rlib"]
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1 change: 1 addition & 0 deletions tests/ui/eii/default/auxiliary/impl1.rs
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//@ no-prefer-dynamic
//@[dylib-impl] compile-flags: --crate-type=dylib -Cprefer-dynamic
//@ aux-build: decl_with_default.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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0 tests/ui/eii/default/call_default.run.stdout → ...eii/default/call_default.dylib.run.stdout
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1 change: 1 addition & 0 deletions tests/ui/eii/default/call_default.rlib.run.stdout
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default 10
2 changes: 2 additions & 0 deletions tests/ui/eii/default/call_default.rs
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//@ revisions: rlib dylib
//@[dylib] needs-crate-type: dylib
//@ aux-build: decl_with_default.rs
//@ run-pass
//@ check-run-results
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2 changes: 2 additions & 0 deletions tests/ui/eii/default/call_default_panics.rs
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//@ revisions: rlib dylib
//@[dylib] needs-crate-type: dylib
//@ aux-build: decl_with_default_panics.rs
//@ edition: 2021
//@ run-pass
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0 tests/ui/eii/default/call_impl.run.stdout → ...i/default/call_impl.dylib-impl.run.stdout
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1 change: 1 addition & 0 deletions tests/ui/eii/default/call_impl.rlib.run.stdout
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2 changes: 2 additions & 0 deletions tests/ui/eii/default/call_impl.rs
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//@ revisions: rlib dylib-impl
//@[dylib-impl] needs-crate-type: dylib
//@ aux-build: decl_with_default.rs
//@ aux-build: impl1.rs
//@ run-pass
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2 changes: 2 additions & 0 deletions tests/ui/eii/duplicate/auxiliary/impl1.rs
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//@ no-prefer-dynamic
//@[dylib] compile-flags: --crate-type=dylib -Cprefer-dynamic
//@ aux-build: decl.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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2 changes: 2 additions & 0 deletions tests/ui/eii/duplicate/auxiliary/impl2.rs
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//@ no-prefer-dynamic
//@[dylib] compile-flags: --crate-type=dylib -Cprefer-dynamic
//@ aux-build: decl.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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1 change: 1 addition & 0 deletions tests/ui/eii/duplicate/auxiliary/impl3.rs
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//@ no-prefer-dynamic
//@ aux-build: decl.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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1 change: 1 addition & 0 deletions tests/ui/eii/duplicate/auxiliary/impl4.rs
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//@ no-prefer-dynamic
//@ aux-build: decl.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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4 changes: 2 additions & 2 deletions tests/ui/eii/duplicate/duplicate1.stderr → .../ui/eii/duplicate/duplicate1.dylib.stderr
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error: multiple implementations of `#[eii1]`
--> $DIR/auxiliary/impl1.rs:9:1
--> $DIR/auxiliary/impl1.rs:11:1
|
LL | fn other(x: u64) {
| ^^^^^^^^^^^^^^^^ first implemented here in crate `impl1`
|
::: $DIR/auxiliary/impl2.rs:9:1
::: $DIR/auxiliary/impl2.rs:11:1
|
LL | fn other(x: u64) {
| ---------------- also implemented here in crate `impl2`
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15 changes: 15 additions & 0 deletions tests/ui/eii/duplicate/duplicate1.rlib.stderr
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error: multiple implementations of `#[eii1]`
--> $DIR/auxiliary/impl1.rs:11:1
|
LL | fn other(x: u64) {
| ^^^^^^^^^^^^^^^^ first implemented here in crate `impl1`
|
::: $DIR/auxiliary/impl2.rs:11:1
|
LL | fn other(x: u64) {
| ---------------- also implemented here in crate `impl2`
|
= help: an "externally implementable item" can only have a single implementation in the final artifact. When multiple implementations are found, also in different crates, they conflict

error: aborting due to 1 previous error

2 changes: 2 additions & 0 deletions tests/ui/eii/duplicate/duplicate1.rs
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//@ revisions: rlib dylib
//@[dylib] needs-crate-type: dylib
//@ aux-build: impl1.rs
//@ aux-build: impl2.rs
//@ ignore-backends: gcc
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4 changes: 2 additions & 2 deletions tests/ui/eii/duplicate/duplicate2.stderr
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error: multiple implementations of `#[eii1]`
--> $DIR/auxiliary/impl1.rs:9:1
--> $DIR/auxiliary/impl1.rs:11:1
|
LL | fn other(x: u64) {
| ^^^^^^^^^^^^^^^^ first implemented here in crate `impl1`
|
::: $DIR/auxiliary/impl2.rs:9:1
::: $DIR/auxiliary/impl2.rs:11:1
|
LL | fn other(x: u64) {
| ---------------- also implemented here in crate `impl2`
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4 changes: 2 additions & 2 deletions tests/ui/eii/duplicate/duplicate3.stderr
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error: multiple implementations of `#[eii1]`
--> $DIR/auxiliary/impl1.rs:9:1
--> $DIR/auxiliary/impl1.rs:11:1
|
LL | fn other(x: u64) {
| ^^^^^^^^^^^^^^^^ first implemented here in crate `impl1`
|
::: $DIR/auxiliary/impl2.rs:9:1
::: $DIR/auxiliary/impl2.rs:11:1
|
LL | fn other(x: u64) {
| ---------------- also implemented here in crate `impl2`
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4 changes: 2 additions & 2 deletions tests/ui/eii/duplicate/dylib_default_duplicate.rs
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//@ needs-crate-type: dylib
//@ compile-flags: --emit link
//@ ignore-backends: gcc
// FIXME: linking on windows (specifically mingw) not yet supported, see tracking issue #125418
//@ ignore-windows
// FIXME(#125418): linking on Windows GNU targets is not yet supported.
//@ ignore-windows-gnu
// Regression test for https://github.com/rust-lang/rust/issues/156320.
// A default implementation from an upstream dylib has already been selected and
// must not be overridden by a downstream explicit implementation.
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3 changes: 2 additions & 1 deletion tests/ui/eii/linking/track_caller_cross_crate.rs
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//@ aux-build: track_caller_cross_other_crate.rs
//@ compile-flags: -O
//@ ignore-backends: gcc
//@ ignore-windows
// FIXME(#125418): linking on Windows GNU targets is not yet supported.
//@ ignore-windows-gnu
// Tests that `#[track_caller]` on an EII declaration in one crate is derived
// onto an explicit implementation in another crate.

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2 changes: 2 additions & 0 deletions tests/ui/eii/static/auxiliary/cross_crate_def.rs
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//@ no-prefer-dynamic
//@[dylib] compile-flags: --crate-type=dylib -Cprefer-dynamic
#![crate_type = "rlib"]
#![feature(extern_item_impls)]

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1 change: 1 addition & 0 deletions tests/ui/eii/static/auxiliary/decl_with_default.rs
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//@ no-prefer-dynamic
//@[dylib] compile-flags: --crate-type=dylib -Cprefer-dynamic
#![crate_type = "rlib"]
#![feature(extern_item_impls)]

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1 change: 1 addition & 0 deletions tests/ui/eii/static/auxiliary/impl_default_override.rs
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//@ no-prefer-dynamic
//@[dylib-impl] compile-flags: --crate-type=dylib -Cprefer-dynamic
//@ aux-build: decl_with_default.rs
#![crate_type = "rlib"]
#![feature(extern_item_impls)]
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0 .../ui/eii/static/cross_crate_def.run.stdout → ...i/static/cross_crate_def.dylib.run.stdout
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2 changes: 2 additions & 0 deletions tests/ui/eii/static/cross_crate_def.rlib.run.stdout
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5
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2 changes: 2 additions & 0 deletions tests/ui/eii/static/cross_crate_def.rs
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//@ revisions: rlib dylib
//@[dylib] needs-crate-type: dylib
//@ run-pass
//@ check-run-results
//@ aux-build: cross_crate_def.rs
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0 ...eii/static/default_cross_crate.run.stdout → ...atic/default_cross_crate.dylib.run.stdout
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1 change: 1 addition & 0 deletions tests/ui/eii/static/default_cross_crate.rlib.run.stdout
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2 changes: 2 additions & 0 deletions tests/ui/eii/static/default_cross_crate.rs
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//@ revisions: rlib dylib
//@[dylib] needs-crate-type: dylib
//@ aux-build: decl_with_default.rs
//@ run-pass
//@ check-run-results
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0 ...c/default_cross_crate_explicit.run.stdout → ...ross_crate_explicit.dylib-impl.run.stdout
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1 change: 1 addition & 0 deletions tests/ui/eii/static/default_cross_crate_explicit.rlib.run.stdout
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2 changes: 2 additions & 0 deletions tests/ui/eii/static/default_cross_crate_explicit.rs
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//@ revisions: rlib dylib-impl
//@[dylib-impl] needs-crate-type: dylib
//@ aux-build: decl_with_default.rs
//@ aux-build: impl_default_override.rs
//@ run-pass
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3 changes: 2 additions & 1 deletion tests/ui/eii/track_caller.rs
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//@ run-pass
//@ ignore-backends: gcc
//@ ignore-windows
// FIXME(#125418): linking on Windows GNU targets is not yet supported.
//@ ignore-windows-gnu
// Tests that `#[track_caller]` on an EII declaration is threaded through both
// the default impl (no override) and an explicit override (which does not
// repeat `#[track_caller]` — it is derived during codegen so the shim ABI matches).
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