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Fix breakage when running compiletest with --test-args=--edition=2015 #139578

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Merged
merged 6 commits into from
Apr 11, 2025
Merged

Fix breakage when running compiletest with --test-args=--edition=2015 #139578

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cd371b9
replace `//@ compile-flags: --edition` with `//@ edition`
pietroalbini Apr 8, 2025
cd3a7bb
ensure //@compile-flags are last even when passing --edition
pietroalbini Apr 8, 2025
2638e4e
prevent configuring the edition with //@compile-flags
pietroalbini Apr 8, 2025
9cf6e8c
include --edition in the compiletest stamp
pietroalbini Apr 8, 2025
33794fd
mention --edition restrictions in rustc-dev-guide
pietroalbini Apr 10, 2025
3ebf1c2
didn't catch this test failure, whoops
pietroalbini Apr 11, 2025
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16 changes: 8 additions & 8 deletions src/doc/rustc-dev-guide/src/tests/directives.md
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Expand Up @@ -229,14 +229,14 @@ ignoring debuggers.

### Affecting how tests are built

| Directive | Explanation | Supported test suites | Possible values |
|---------------------|----------------------------------------------------------------------------------------------|---------------------------|------------------------------------------------------------------------------|
| `compile-flags` | Flags passed to `rustc` when building the test or aux file | All except for `run-make` | Any valid `rustc` flags, e.g. `-Awarnings -Dfoo`. Cannot be `-Cincremental`. |
| `edition` | Alias for `compile-flags: --edition=xxx` | All except for `run-make` | Any valid `--edition` value |
| `rustc-env` | Env var to set when running `rustc` | All except for `run-make` | `<KEY>=<VALUE>` |
| `unset-rustc-env` | Env var to unset when running `rustc` | All except for `run-make` | Any env var name |
| `incremental` | Proper incremental support for tests outside of incremental test suite | `ui`, `crashes` | N/A |
| `no-prefer-dynamic` | Don't use `-C prefer-dynamic`, don't build as a dylib via a `--crate-type=dylib` preset flag | `ui`, `crashes` | N/A |
| Directive | Explanation | Supported test suites | Possible values |
|---------------------|----------------------------------------------------------------------------------------------|---------------------------|--------------------------------------------------------------------------------------------|
| `compile-flags` | Flags passed to `rustc` when building the test or aux file | All except for `run-make` | Any valid `rustc` flags, e.g. `-Awarnings -Dfoo`. Cannot be `-Cincremental` or `--edition` |
| `edition` | The edition used to build the test | All except for `run-make` | Any valid `--edition` value |
| `rustc-env` | Env var to set when running `rustc` | All except for `run-make` | `<KEY>=<VALUE>` |
| `unset-rustc-env` | Env var to unset when running `rustc` | All except for `run-make` | Any env var name |
| `incremental` | Proper incremental support for tests outside of incremental test suite | `ui`, `crashes` | N/A |
| `no-prefer-dynamic` | Don't use `-C prefer-dynamic`, don't build as a dylib via a `--crate-type=dylib` preset flag | `ui`, `crashes` | N/A |

<div class="warning">
Tests (outside of `run-make`) that want to use incremental tests not in the
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16 changes: 13 additions & 3 deletions src/tools/compiletest/src/header.rs
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Expand Up @@ -378,14 +378,22 @@ impl TestProps {
}

if let Some(flags) = config.parse_name_value_directive(ln, COMPILE_FLAGS) {
self.compile_flags.extend(split_flags(&flags));
let flags = split_flags(&flags);
for flag in &flags {
if flag == "--edition" || flag.starts_with("--edition=") {
panic!("you must use `//@ edition` to configure the edition");
}
}
self.compile_flags.extend(flags);
}
if config.parse_name_value_directive(ln, INCORRECT_COMPILER_FLAGS).is_some() {
panic!("`compiler-flags` directive should be spelled `compile-flags`");
}

if let Some(edition) = config.parse_edition(ln) {
self.compile_flags.push(format!("--edition={}", edition.trim()));
// The edition is added at the start, since flags from //@compile-flags must
// be passed to rustc last.
self.compile_flags.insert(0, format!("--edition={}", edition.trim()));
has_edition = true;
}

Expand Down Expand Up @@ -606,7 +614,9 @@ impl TestProps {
}

if let (Some(edition), false) = (&config.edition, has_edition) {
self.compile_flags.push(format!("--edition={}", edition));
// The edition is added at the start, since flags from //@compile-flags must be passed
// to rustc last.
self.compile_flags.insert(0, format!("--edition={}", edition));
}
}

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1 change: 1 addition & 0 deletions src/tools/compiletest/src/runtest.rs
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Expand Up @@ -177,6 +177,7 @@ pub fn compute_stamp_hash(config: &Config) -> String {
let mut hash = DefaultHasher::new();
config.stage_id.hash(&mut hash);
config.run.hash(&mut hash);
config.edition.hash(&mut hash);

match config.debugger {
Some(Debugger::Cdb) => {
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3 changes: 2 additions & 1 deletion tests/assembly/cstring-merging.rs
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@@ -1,6 +1,7 @@
//@ only-linux
//@ assembly-output: emit-asm
//@ compile-flags: --crate-type=lib -Copt-level=3 --edition 2024
//@ compile-flags: --crate-type=lib -Copt-level=3
//@ edition: 2024

use std::ffi::CStr;

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3 changes: 2 additions & 1 deletion tests/codegen/async-closure-debug.rs
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@@ -1,6 +1,7 @@
// Just make sure that async closures don't ICE.
//
//@ compile-flags: -C debuginfo=2 --edition=2018
//@ compile-flags: -C debuginfo=2
//@ edition: 2018
//@ ignore-msvc

// CHECK-DAG: [[GEN_FN:!.*]] = !DINamespace(name: "async_closure_test"
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3 changes: 2 additions & 1 deletion tests/codegen/async-fn-debug-awaitee-field.rs
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Expand Up @@ -7,7 +7,8 @@
//@[MSVC] only-msvc
//@[NONMSVC] ignore-msvc

//@ compile-flags: -C debuginfo=2 --edition=2018 -Copt-level=0
//@ compile-flags: -C debuginfo=2 -Copt-level=0
//@ edition: 2018

#![crate_type = "lib"]

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13 changes: 7 additions & 6 deletions tests/codegen/async-fn-debug-msvc.rs
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Expand Up @@ -4,7 +4,8 @@
// - Other fields are not marked artificial
//
//
//@ compile-flags: -C debuginfo=2 --edition=2018
//@ compile-flags: -C debuginfo=2
//@ edition: 2018
//@ only-msvc

async fn foo() {}
Expand All @@ -19,23 +20,23 @@ async fn async_fn_test() {
// CHECK-DAG: [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_union_type, name: "enum2$<async_fn_debug_msvc::async_fn_test::async_fn_env$0>",
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant0", scope: [[GEN]],
// For brevity, we only check the struct name and members of the last variant.
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 11,
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 12,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant1", scope: [[GEN]],
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-SAME: file: [[FILE]], line: 16,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant2", scope: [[GEN]],
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-SAME: file: [[FILE]], line: 16,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant3", scope: [[GEN]],
// CHECK-SAME: file: [[FILE]], line: 12,
// CHECK-SAME: file: [[FILE]], line: 13,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant4", scope: [[GEN]],
// CHECK-SAME: file: [[FILE]], line: 14,
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-SAME: baseType: [[VARIANT_WRAPPER:![0-9]*]]
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
Expand Down
13 changes: 7 additions & 6 deletions tests/codegen/async-fn-debug.rs
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Expand Up @@ -4,7 +4,8 @@
// - Other fields are not marked artificial
//
//
//@ compile-flags: -C debuginfo=2 --edition=2018
//@ compile-flags: -C debuginfo=2
//@ edition: 2018
//@ ignore-msvc

async fn foo() {}
Expand All @@ -22,26 +23,26 @@ async fn async_fn_test() {
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: discriminator: [[DISC:![0-9]*]]
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "0", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 11,
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 12,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-SAME: file: [[FILE]], line: 16,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-SAME: file: [[FILE]], line: 16,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 12,
// CHECK-SAME: file: [[FILE]], line: 13,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 14,
// CHECK-SAME: file: [[FILE]], line: 15,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],
Expand Down
13 changes: 7 additions & 6 deletions tests/codegen/coroutine-debug.rs
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Expand Up @@ -4,7 +4,8 @@
// - Other fields are not marked artificial
//
//
//@ compile-flags: -C debuginfo=2 --edition=2018
//@ compile-flags: -C debuginfo=2
//@ edition: 2018
//@ ignore-msvc

#![feature(coroutines, coroutine_trait)]
Expand All @@ -27,26 +28,26 @@ fn coroutine_test() -> impl Coroutine<Yield = i32, Return = ()> {
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: discriminator: [[DISC:![0-9]*]]
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "0", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 15,
// CHECK-SAME: file: [[FILE:![0-9]*]], line: 16,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 19,
// CHECK-SAME: file: [[FILE]], line: 20,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 19,
// CHECK-SAME: file: [[FILE]], line: 20,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 16,
// CHECK-SAME: file: [[FILE]], line: 17,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
// CHECK-SAME: file: [[FILE]], line: 18,
// CHECK-SAME: file: [[FILE]], line: 19,
// CHECK-NOT: flags: DIFlagArtificial
// CHECK-SAME: )
// CHECK: [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],
Expand Down
3 changes: 2 additions & 1 deletion tests/codegen/debuginfo-generic-closure-env-names.rs
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Expand Up @@ -18,7 +18,8 @@
// legacy mangling scheme rustc version and generic parameters are both hashed into a single part
// of the name, thus randomizing item order with respect to rustc version.

//@ compile-flags: -Cdebuginfo=2 --edition 2021 -Copt-level=0 -Csymbol-mangling-version=v0
//@ compile-flags: -Cdebuginfo=2 -Copt-level=0 -Csymbol-mangling-version=v0
//@ edition: 2021

// non_generic_closure()
// NONMSVC: !DICompositeType(tag: DW_TAG_structure_type, name: "{closure_env#0}", scope: ![[non_generic_closure_NAMESPACE:[0-9]+]],
Expand Down
3 changes: 2 additions & 1 deletion tests/codegen/infallible-unwrap-in-opt-z.rs
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@@ -1,4 +1,5 @@
//@ compile-flags: -C opt-level=z --edition=2021
//@ compile-flags: -C opt-level=z
//@ edition: 2021

#![crate_type = "lib"]

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7 changes: 4 additions & 3 deletions tests/codegen/inline-function-args-debug-info.rs
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Expand Up @@ -2,7 +2,8 @@
// gets inlined by MIR inlining. Without function argument indexes, `info args` in gdb won't show
// arguments and their values for the current function.

//@ compile-flags: -Zinline-mir=yes -Cdebuginfo=2 --edition=2021
//@ compile-flags: -Zinline-mir=yes -Cdebuginfo=2
//@ edition: 2021

#![crate_type = "lib"]

Expand All @@ -14,9 +15,9 @@ pub fn outer_function(x: usize, y: usize) -> usize {
#[inline]
fn inner_function(aaaa: usize, bbbb: usize) -> usize {
// CHECK: !DILocalVariable(name: "aaaa", arg: 1
// CHECK-SAME: line: 15
// CHECK-SAME: line: 16
// CHECK-NOT: !DILexicalBlock(
// CHECK: !DILocalVariable(name: "bbbb", arg: 2
// CHECK-SAME: line: 15
// CHECK-SAME: line: 16
aaaa + bbbb
}
3 changes: 2 additions & 1 deletion tests/codegen/issues/issue-119422.rs
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@@ -1,7 +1,8 @@
//! This test checks that compiler don't generate useless compares to zeros
//! for `NonZero` integer types.
//!
//@ compile-flags: -Copt-level=3 --edition=2021 -Zmerge-functions=disabled
//@ compile-flags: -Copt-level=3 -Zmerge-functions=disabled
//@ edition: 2021
//@ only-64bit (because the LLVM type of i64 for usize shows up)
#![crate_type = "lib"]

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3 changes: 2 additions & 1 deletion tests/codegen/simd/simd-wide-sum.rs
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@@ -1,5 +1,6 @@
//@ revisions: llvm mir-opt3
//@ compile-flags: -C opt-level=3 -Z merge-functions=disabled --edition=2021
//@ compile-flags: -C opt-level=3 -Z merge-functions=disabled
//@ edition: 2021
//@ only-x86_64
//@ [mir-opt3]compile-flags: -Zmir-opt-level=3
//@ [mir-opt3]build-pass
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3 changes: 2 additions & 1 deletion tests/codegen/try_question_mark_nop.rs
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@@ -1,4 +1,5 @@
//@ compile-flags: -Copt-level=3 -Z merge-functions=disabled --edition=2021
//@ compile-flags: -Copt-level=3 -Z merge-functions=disabled
//@ edition: 2021
//@ only-x86_64
//@ revisions: NINETEEN TWENTY
//@[NINETEEN] exact-llvm-major-version: 19
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2 changes: 1 addition & 1 deletion tests/crashes/119095.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #119095
//@ compile-flags: --edition=2021
//@ edition: 2021

fn any<T>() -> T {
loop {}
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3 changes: 2 additions & 1 deletion tests/crashes/120016.rs
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@@ -1,5 +1,6 @@
//@ known-bug: #120016
//@ compile-flags: -Zcrate-attr=feature(const_async_blocks) --edition=2021
//@ compile-flags: -Zcrate-attr=feature(const_async_blocks)
//@ edition: 2021

#![feature(type_alias_impl_trait, const_async_blocks)]

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2 changes: 1 addition & 1 deletion tests/crashes/127033.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #127033
//@ compile-flags: --edition=2021
//@ edition: 2021

pub trait RaftLogStorage {
fn save_vote(vote: ()) -> impl std::future::Future + Send;
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3 changes: 2 additions & 1 deletion tests/crashes/128094.rs
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@@ -1,5 +1,6 @@
//@ known-bug: rust-lang/rust#128094
//@ compile-flags: -Zmir-enable-passes=+GVN --edition=2018
//@ compile-flags: -Zmir-enable-passes=+GVN
//@ edition: 2018

pub enum Request {
TestSome(T),
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3 changes: 2 additions & 1 deletion tests/crashes/132103.rs
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@@ -1,5 +1,6 @@
//@ known-bug: #132103
//@compile-flags: -Zvalidate-mir --edition=2018 -Zinline-mir=yes
//@ compile-flags: -Zvalidate-mir -Zinline-mir=yes
//@ edition: 2018
use core::future::{async_drop_in_place, Future};
use core::mem::{self};
use core::pin::pin;
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3 changes: 2 additions & 1 deletion tests/crashes/132430.rs
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@@ -1,6 +1,7 @@
//@ known-bug: #132430

//@compile-flags: --edition=2018 --crate-type=lib
//@ compile-flags: --crate-type=lib
//@ edition: 2018
#![feature(cmse_nonsecure_entry)]
struct Test;

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3 changes: 2 additions & 1 deletion tests/crashes/135128.rs
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@@ -1,5 +1,6 @@
//@ known-bug: #135128
//@ compile-flags: -Copt-level=1 --edition=2021
//@ compile-flags: -Copt-level=1
//@ edition: 2021

#![feature(trivial_bounds)]

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3 changes: 2 additions & 1 deletion tests/crashes/135470.rs
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@@ -1,5 +1,6 @@
//@ known-bug: #135470
//@ compile-flags: --edition=2021 -Copt-level=0
//@ compile-flags: -Copt-level=0
//@ edition: 2021

use std::future::Future;
trait Access {
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4 changes: 3 additions & 1 deletion tests/crashes/135646.rs
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@@ -1,5 +1,7 @@
//@ known-bug: #135646
//@ compile-flags: --edition=2024 -Zpolonius=next
//@ compile-flags: -Zpolonius=next
//@ edition: 2024

fn main() {
&{ [1, 2, 3][4] };
}
2 changes: 1 addition & 1 deletion tests/crashes/135668.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #135668
//@ compile-flags: --edition=2021
//@ edition: 2021
use std::future::Future;

pub async fn foo() {
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2 changes: 1 addition & 1 deletion tests/crashes/137467-1.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #137467
//@ compile-flags: --edition=2021
//@ edition: 2021
enum Camera {
Normal { base_transform: i32 },
Volume { transform: i32 },
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2 changes: 1 addition & 1 deletion tests/crashes/137467-2.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #137467
//@ compile-flags: --edition=2021
//@ edition: 2021

enum Camera {
Normal { base_transform: i32 },
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2 changes: 1 addition & 1 deletion tests/crashes/137467-3.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #137467
//@ compile-flags: --edition=2021
//@ edition: 2021

fn meow(x: (u32, u32, u32)) {
let f = || {
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2 changes: 1 addition & 1 deletion tests/crashes/137916.rs
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@@ -1,5 +1,5 @@
//@ known-bug: #137916
//@ compile-flags: --edition=2021
//@ edition: 2021
use std::ptr::null;

async fn a() -> Box<dyn Send> {
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3 changes: 2 additions & 1 deletion tests/debuginfo/coroutine-closure.rs
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@@ -1,6 +1,7 @@
#![feature(async_closure)]
//@ only-cdb
//@ compile-flags:-g --edition=2021
//@ compile-flags: -g
//@ edition: 2021

// === CDB TESTS ==================================================================================

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