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-rw-r--r--src/bootstrap/src/core/build_steps/setup.rs4
-rw-r--r--src/ci/citool/Cargo.toml2
-rw-r--r--src/ci/citool/src/main.rs4
-rw-r--r--src/ci/citool/src/utils.rs18
m---------src/doc/book0
m---------src/doc/edition-guide0
m---------src/doc/nomicon0
m---------src/doc/reference0
-rw-r--r--src/doc/rustc-dev-guide/src/tests/directives.md14
-rw-r--r--src/doc/rustc/src/SUMMARY.md2
-rw-r--r--src/doc/rustc/src/platform-support.md6
-rw-r--r--src/doc/rustc/src/platform-support/aarch64-unknown-linux-gnu.md50
-rw-r--r--src/doc/rustc/src/platform-support/aarch64-unknown-none.md5
-rw-r--r--src/doc/rustc/src/platform-support/arm-linux.md4
-rw-r--r--src/doc/rustc/src/platform-support/armv7-unknown-linux-gnueabi.md51
-rw-r--r--src/doc/rustc/src/platform-support/armv7a-none-eabi.md5
-rw-r--r--src/doc/rustc/src/platform-support/armv7r-none-eabi.md7
-rw-r--r--src/doc/rustc/src/platform-support/armv8r-none-eabihf.md7
-rw-r--r--src/doc/rustc/src/platform-support/thumbv7em-none-eabi.md6
-rw-r--r--src/doc/rustc/src/platform-support/thumbv7m-none-eabi.md6
-rw-r--r--src/doc/rustc/src/platform-support/thumbv8m.base-none-eabi.md6
-rw-r--r--src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md6
-rw-r--r--src/doc/rustc/src/platform-support/unknown-uefi.md8
-rw-r--r--src/etc/rust_analyzer_eglot.el8
-rw-r--r--src/etc/rust_analyzer_helix.toml14
-rw-r--r--src/etc/rust_analyzer_settings.json8
-rw-r--r--src/etc/rust_analyzer_zed.json23
-rw-r--r--src/tools/compiletest/src/common.rs6
-rw-r--r--src/tools/compiletest/src/directives.rs107
-rw-r--r--src/tools/compiletest/src/directives/tests.rs142
-rw-r--r--src/tools/compiletest/src/edition.rs35
-rw-r--r--src/tools/compiletest/src/lib.rs4
-rw-r--r--src/tools/miri/tests/pass/static_align.rs60
-rw-r--r--src/tools/miri/tests/pass/thread_local-panic.rs8
-rw-r--r--src/tools/miri/tests/pass/thread_local-panic.stderr5
35 files changed, 582 insertions, 49 deletions
diff --git a/src/bootstrap/src/core/build_steps/setup.rs b/src/bootstrap/src/core/build_steps/setup.rs
index 9f9af1d9abe..4b0080f1c80 100644
--- a/src/bootstrap/src/core/build_steps/setup.rs
+++ b/src/bootstrap/src/core/build_steps/setup.rs
@@ -587,6 +587,7 @@ Select which editor you would like to set up [default: None]: ";
                 "631c837b0e98ae35fd48b0e5f743b1ca60adadf2d0a2b23566ba25df372cf1a9",
                 "080955765db84bb6cbf178879f489c4e2369397626a6ecb3debedb94a9d0b3ce",
                 "f501475c6654187091c924ae26187fa5791d74d4a8ab3fb61fbbe4c0275aade1",
+                "e260553b71e4773c30a63c4b23b42b279fc73e72f95b775c47b7b7c511c51595",
             ],
             EditorKind::Helix => &[
                 "2d3069b8cf1b977e5d4023965eb6199597755e6c96c185ed5f2854f98b83d233",
@@ -594,6 +595,7 @@ Select which editor you would like to set up [default: None]: ";
                 "f252dcc30ca85a193a699581e5e929d5bd6c19d40d7a7ade5e257a9517a124a5",
                 "198c195ed0c070d15907b279b8b4ea96198ca71b939f5376454f3d636ab54da5",
                 "1c43ead340b20792b91d02b08494ee68708e7e09f56b6766629b4b72079208f1",
+                "eec09a09452682060afd23dd5d3536ccac5615b3cdbf427366446901215fb9f6",
             ],
             EditorKind::Vim | EditorKind::VsCode => &[
                 "ea67e259dedf60d4429b6c349a564ffcd1563cf41c920a856d1f5b16b4701ac8",
@@ -610,6 +612,7 @@ Select which editor you would like to set up [default: None]: ";
                 "f954316090936c7e590c253ca9d524008375882fa13c5b41d7e2547a896ff893",
                 "701b73751efd7abd6487f2c79348dab698af7ac4427b79fa3d2087c867144b12",
                 "a61df796c0c007cb6512127330564e49e57d558dec715703916a928b072a1054",
+                "02a49ac2d31f00ef6e4531c44e00dac51cea895112e480553f1ba060b3942a47",
             ],
             EditorKind::Zed => &[
                 "bbce727c269d1bd0c98afef4d612eb4ce27aea3c3a8968c5f10b31affbc40b6c",
@@ -617,6 +620,7 @@ Select which editor you would like to set up [default: None]: ";
                 "2e96bf0d443852b12f016c8fc9840ab3d0a2b4fe0b0fb3a157e8d74d5e7e0e26",
                 "4fadd4c87389a601a27db0d3d74a142fa3a2e656ae78982e934dbe24bee32ad6",
                 "f0bb3d23ab1a49175ab0ef5c4071af95bb03d01d460776cdb716d91333443382",
+                "5ef83292111d9a8bb63b6afc3abf42d0bc78fe24985f0d2e039e73258b5dab8f",
             ],
         }
     }
diff --git a/src/ci/citool/Cargo.toml b/src/ci/citool/Cargo.toml
index f61243a4d71..078b877e44b 100644
--- a/src/ci/citool/Cargo.toml
+++ b/src/ci/citool/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "citool"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 
 [dependencies]
 anyhow = "1"
diff --git a/src/ci/citool/src/main.rs b/src/ci/citool/src/main.rs
index fe1b36673a1..255d39846da 100644
--- a/src/ci/citool/src/main.rs
+++ b/src/ci/citool/src/main.rs
@@ -24,7 +24,7 @@ use crate::github::JobInfoResolver;
 use crate::jobs::RunType;
 use crate::metrics::{JobMetrics, download_auto_job_metrics, download_job_metrics, load_metrics};
 use crate::test_dashboard::generate_test_dashboard;
-use crate::utils::{load_env_var, output_details};
+use crate::utils::{init_submodule_if_needed, load_env_var, output_details};
 
 const CI_DIRECTORY: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/..");
 pub const DOCKER_DIRECTORY: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/../docker");
@@ -121,6 +121,8 @@ fn run_workflow_locally(db: JobDatabase, job_type: JobType, name: String) -> any
         (key.clone(), value)
     }));
 
+    init_submodule_if_needed("src/llvm-project/")?;
+
     let mut cmd = Command::new(Path::new(DOCKER_DIRECTORY).join("run.sh"));
     cmd.arg(job.image());
     cmd.envs(custom_env);
diff --git a/src/ci/citool/src/utils.rs b/src/ci/citool/src/utils.rs
index 3176cb62f60..43b220255dc 100644
--- a/src/ci/citool/src/utils.rs
+++ b/src/ci/citool/src/utils.rs
@@ -1,5 +1,7 @@
 use std::borrow::Cow;
+use std::convert::AsRef;
 use std::path::Path;
+use std::process::Command;
 
 use anyhow::Context;
 
@@ -34,3 +36,19 @@ where
 pub fn normalize_path_delimiters(name: &str) -> Cow<'_, str> {
     if name.contains("\\") { name.replace('\\', "/").into() } else { name.into() }
 }
+
+pub fn init_submodule_if_needed<P: AsRef<Path>>(path_to_submodule: P) -> anyhow::Result<()> {
+    let path_to_submodule = path_to_submodule.as_ref();
+
+    if let Ok(mut iter) = path_to_submodule.read_dir()
+        && iter.any(|entry| entry.is_ok())
+    {
+        // Seems like the submodule is already initialized, nothing to be done here.
+        return Ok(());
+    }
+    let mut child = Command::new("git")
+        .args(&["submodule", "update", "--init"])
+        .arg(path_to_submodule)
+        .spawn()?;
+    if !child.wait()?.success() { Err(anyhow::anyhow!("git command failed")) } else { Ok(()) }
+}
diff --git a/src/doc/book b/src/doc/book
-Subproject 33f1af40cc44dde7e3e892f7a508e6f427d2cbc
+Subproject 1d7c3e6abec2d5a9bfac798b29b7855b9502542
diff --git a/src/doc/edition-guide b/src/doc/edition-guide
-Subproject aa6ce337c0adf7a63e33960d184270f2a45ab9e
+Subproject e2ed891f00361efc26616d82590b1c85d7a8920
diff --git a/src/doc/nomicon b/src/doc/nomicon
-Subproject f17a018b9989430967d1c58e9a12c51169abc74
+Subproject 23fc2682f8fcb887f77d0eaabba708809f834c1
diff --git a/src/doc/reference b/src/doc/reference
-Subproject cc7247d8dfaef4c39000bb12c55c32ba5b5ba97
+Subproject e11adf6016a362766eea5a3f9832e193994dd0c
diff --git a/src/doc/rustc-dev-guide/src/tests/directives.md b/src/doc/rustc-dev-guide/src/tests/directives.md
index 4be78fac4ec..3b6c8917464 100644
--- a/src/doc/rustc-dev-guide/src/tests/directives.md
+++ b/src/doc/rustc-dev-guide/src/tests/directives.md
@@ -262,6 +262,20 @@ Consider writing the test as a proper incremental test instead.
 
 </div>
 
+#### The edition directive
+
+The `//@ edition` directive can take an exact edition, a bounded half-open range of editions or a left-bounded half-open range of editions, this affects which edition is used by `./x test` to run the test. For example:
+
+- A test with the `//@ edition: 2018` directive will only run under the 2018 edition.
+- A test with the `//@ edition: 2015..2021` directive can be run under both the 2015 and 2018 editions. However, CI will only run the test with the lowest edition possible (2015 in this case).
+- A test with the `//@ edition: 2018..` directive will run under any edition greater or equal than 2018. However, CI will only run the test with the lowest edition possible (2018 in this case).
+
+You can also force `./x test` to use a specific edition by passing the `-- --edition=` argument. However, tests with the `//@ edition` directive will clamp the value passed to the argument. For example, if we run `./x test -- --edition=2015`:
+
+- A test with the `//@ edition: 2018` will run with the 2018 edition. 
+- A test with the `//@ edition: 2015..2021` will be run with the 2015 edition. 
+- A test with the `//@ edition: 2018..` will run with the 2018 edition. 
+
 ### Rustdoc
 
 | Directive   | Explanation                                                  | Supported test suites                   | Possible values           |
diff --git a/src/doc/rustc/src/SUMMARY.md b/src/doc/rustc/src/SUMMARY.md
index 67882bb3813..a9ce738a013 100644
--- a/src/doc/rustc/src/SUMMARY.md
+++ b/src/doc/rustc/src/SUMMARY.md
@@ -47,6 +47,7 @@
     - [\*-apple-watchos](platform-support/apple-watchos.md)
     - [\*-apple-visionos](platform-support/apple-visionos.md)
     - [aarch64-nintendo-switch-freestanding](platform-support/aarch64-nintendo-switch-freestanding.md)
+    - [aarch64-unknown-linux-gnu](platform-support/aarch64-unknown-linux-gnu.md)
     - [aarch64-unknown-linux-musl](platform-support/aarch64-unknown-linux-musl.md)
     - [aarch64-unknown-none*](platform-support/aarch64-unknown-none.md)
     - [aarch64_be-unknown-none-softfloat](platform-support/aarch64_be-unknown-none-softfloat.md)
@@ -67,6 +68,7 @@
     - [arm\*-unknown-linux-\*](./platform-support/arm-linux.md)
         - [armeb-unknown-linux-gnueabi](platform-support/armeb-unknown-linux-gnueabi.md)
         - [armv5te-unknown-linux-gnueabi](platform-support/armv5te-unknown-linux-gnueabi.md)
+        - [armv7-unknown-linux-gnueabi](platform-support/armv7-unknown-linux-gnueabi.md)
         - [armv7-unknown-linux-uclibceabi](platform-support/armv7-unknown-linux-uclibceabi.md)
         - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md)
     - [armv6k-nintendo-3ds](platform-support/armv6k-nintendo-3ds.md)
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index d0b6ed51bc1..263ea1ddb42 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -34,7 +34,7 @@ target | notes
 -------|-------
 [`aarch64-apple-darwin`](platform-support/apple-darwin.md) | ARM64 macOS (11.0+, Big Sur+)
 [`aarch64-pc-windows-msvc`](platform-support/windows-msvc.md) | ARM64 Windows MSVC
-`aarch64-unknown-linux-gnu` | ARM64 Linux (kernel 4.1+, glibc 2.17+)
+[`aarch64-unknown-linux-gnu`](platform-support/aarch64-unknown-linux-gnu.md) | ARM64 Linux (kernel 4.1+, glibc 2.17+)
 [`i686-pc-windows-msvc`](platform-support/windows-msvc.md) | 32-bit MSVC (Windows 10+, Windows Server 2016+, Pentium 4) [^x86_32-floats-return-ABI] [^win32-msvc-alignment]
 `i686-unknown-linux-gnu` | 32-bit Linux (kernel 3.2+, glibc 2.17+, Pentium 4) [^x86_32-floats-return-ABI]
 [`x86_64-pc-windows-gnu`](platform-support/windows-gnu.md) | 64-bit MinGW (Windows 10+, Windows Server 2016+)
@@ -93,7 +93,7 @@ target | notes
 [`aarch64-unknown-linux-ohos`](platform-support/openharmony.md) | ARM64 OpenHarmony
 `arm-unknown-linux-gnueabi` | Armv6 Linux (kernel 3.2+, glibc 2.17)
 `arm-unknown-linux-gnueabihf` | Armv6 Linux, hardfloat (kernel 3.2+, glibc 2.17)
-`armv7-unknown-linux-gnueabihf` | Armv7-A Linux, hardfloat (kernel 3.2+, glibc 2.17)
+[`armv7-unknown-linux-gnueabihf`](platform-support/armv7-unknown-linux-gnueabi.md) | Armv7-A Linux, hardfloat (kernel 3.2+, glibc 2.17)
 [`armv7-unknown-linux-ohos`](platform-support/openharmony.md) | Armv7-A OpenHarmony
 [`loongarch64-unknown-linux-gnu`](platform-support/loongarch-linux.md) | LoongArch64 Linux, LP64D ABI (kernel 5.19+, glibc 2.36), LSX required
 [`loongarch64-unknown-linux-musl`](platform-support/loongarch-linux.md) | LoongArch64 Linux, LP64D ABI (kernel 5.19+, musl 1.2.5), LSX required
@@ -159,7 +159,7 @@ target | std | notes
 [`armv5te-unknown-linux-gnueabi`](platform-support/armv5te-unknown-linux-gnueabi.md) | ✓ | Armv5TE Linux (kernel 4.4+, glibc 2.23)
 `armv5te-unknown-linux-musleabi` | ✓ | Armv5TE Linux with musl 1.2.3
 [`armv7-linux-androideabi`](platform-support/android.md) | ✓ | Armv7-A Android
-`armv7-unknown-linux-gnueabi` | ✓ | Armv7-A Linux (kernel 4.15+, glibc 2.27)
+[`armv7-unknown-linux-gnueabi`](platform-support/armv7-unknown-linux-gnueabi.md) | ✓ | Armv7-A Linux (kernel 4.15+, glibc 2.27)
 `armv7-unknown-linux-musleabi` | ✓ | Armv7-A Linux with musl 1.2.3
 `armv7-unknown-linux-musleabihf` | ✓ | Armv7-A Linux with musl 1.2.3, hardfloat
 [`armv7a-none-eabi`](platform-support/armv7a-none-eabi.md) | * | Bare Armv7-A
diff --git a/src/doc/rustc/src/platform-support/aarch64-unknown-linux-gnu.md b/src/doc/rustc/src/platform-support/aarch64-unknown-linux-gnu.md
new file mode 100644
index 00000000000..2003a3cb9ea
--- /dev/null
+++ b/src/doc/rustc/src/platform-support/aarch64-unknown-linux-gnu.md
@@ -0,0 +1,50 @@
+# `aarch64-unknown-linux-gnu`
+
+**Tier: 1 (with Host Tools)**
+
+Target for 64-bit little endian ARMv8-A Linux 4.1+ programs using glibc 2.17+.
+
+## Target maintainers
+
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
+
+## Requirements
+
+Building the target itself requires a 64-bit little endian ARMv8-A compiler that is supported by
+`cc-rs`.
+
+## Building the target
+
+The target can be built by enabling it for a `rustc` build:
+
+```toml
+[build]
+target = ["aarch64-unknown-linux-gnu"]
+```
+
+If cross-compiling, make sure your C compiler is included in `$PATH`, then add it to the
+`bootstrap.toml`:
+
+```toml
+[target.aarch64-unknown-linux-musl]
+cc = "aarch64-linux-gnu-gcc"
+cxx = "aarch64-linux-gnu-g++"
+ar = "aarch64-linux-gnu-ar"
+linker = "aarch64-linux-gnu-gcc"
+```
+
+## Building Rust programs
+
+This target is distributed through `rustup`, and otherwise requires no special configuration.
+
+## Cross-compilation
+
+This target can be cross-compiled from any host.
+
+## Testing
+
+This target can be tested as normal with `x.py` on a 64-bit little endian ARMv8-A host or via QEMU
+emulation.
diff --git a/src/doc/rustc/src/platform-support/aarch64-unknown-none.md b/src/doc/rustc/src/platform-support/aarch64-unknown-none.md
index 7e18e8c157f..3d776677d23 100644
--- a/src/doc/rustc/src/platform-support/aarch64-unknown-none.md
+++ b/src/doc/rustc/src/platform-support/aarch64-unknown-none.md
@@ -14,9 +14,12 @@ Processors in this family include the [Arm Cortex-A35, 53, 76, etc][aarch64-cpus
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team]
+- [Rust Embedded Devices Working Group Arm Team]
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
 
 [Rust Embedded Devices Working Group Arm Team]: https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Target CPU and Target Feature options
 
diff --git a/src/doc/rustc/src/platform-support/arm-linux.md b/src/doc/rustc/src/platform-support/arm-linux.md
index 5f40743f3d0..c461a1a3403 100644
--- a/src/doc/rustc/src/platform-support/arm-linux.md
+++ b/src/doc/rustc/src/platform-support/arm-linux.md
@@ -14,8 +14,8 @@ Linux (but not Android). Those targets are:
 * [`armv5te-unknown-linux-gnueabi`](armv5te-unknown-linux-gnueabi.md)
 * `armv5te-unknown-linux-musleabi`
 * `armv5te-unknown-linux-uclibceabi`
-* `armv7-unknown-linux-gnueabi`
-* `armv7-unknown-linux-gnueabihf`
+* [`armv7-unknown-linux-gnueabi`](armv7-unknown-linux-gnueabi.md)
+* [`armv7-unknown-linux-gnueabihf`](armv7-unknown-linux-gnueabi.md)
 * `armv7-unknown-linux-musleabi`
 * `armv7-unknown-linux-musleabihf`
 * `armv7-unknown-linux-ohos`
diff --git a/src/doc/rustc/src/platform-support/armv7-unknown-linux-gnueabi.md b/src/doc/rustc/src/platform-support/armv7-unknown-linux-gnueabi.md
new file mode 100644
index 00000000000..c2fe63a4908
--- /dev/null
+++ b/src/doc/rustc/src/platform-support/armv7-unknown-linux-gnueabi.md
@@ -0,0 +1,51 @@
+# `armv7-unknown-linux-gnueabi` and `armv7-unknown-linux-gnueabihf`
+
+* **Tier: 2 (with Host Tools)** for `armv7-unknown-linux-gnueabihf`
+* **Tier: 2** for `armv7-unknown-linux-gnueabi`
+
+Target for 32-bit little endian ARMv7-A Linux 3.2+ programs using glibc 2.17+.
+
+## Target maintainers
+
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
+
+## Requirements
+
+Building the targets themselves requires a 32-bit little endian ARMv7-A compiler that is supported
+by `cc-rs`.
+
+## Building the target
+
+These targets can be built by enabling it for a `rustc` build:
+
+```toml
+[build]
+target = ["armv7-unknown-linux-gnueabihf", "armv7-unknown-linux-gnueabi"]
+```
+
+If cross-compiling, make sure your C compiler is included in `$PATH`, then add it to the
+`bootstrap.toml`:
+
+```toml
+[target.aarch64-unknown-linux-musl]
+cc = "arm-linux-gnu-gcc"
+cxx = "arm-linux-gnu-g++"
+ar = "arm-linux-gnu-ar"
+linker = "arm-linux-gnu-gcc"
+```
+
+## Building Rust programs
+
+These targets is distributed through `rustup`, and otherwise requires no special configuration.
+
+## Cross-compilation
+
+These targets can be cross-compiled from any host.
+
+## Testing
+
+These targets can be tested as normal with `x.py` on a 32-bit little endian ARMv7-A host or via
+QEMU emulation.
diff --git a/src/doc/rustc/src/platform-support/armv7a-none-eabi.md b/src/doc/rustc/src/platform-support/armv7a-none-eabi.md
index 3dadda86a5f..22278a0a7dc 100644
--- a/src/doc/rustc/src/platform-support/armv7a-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/armv7a-none-eabi.md
@@ -19,9 +19,12 @@ See [`arm-none-eabi`](arm-none-eabi.md) for information applicable to all
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team]
+- [Rust Embedded Devices Working Group Arm Team]
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
 
 [Rust Embedded Devices Working Group Arm Team]: https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Requirements
 
diff --git a/src/doc/rustc/src/platform-support/armv7r-none-eabi.md b/src/doc/rustc/src/platform-support/armv7r-none-eabi.md
index c1252b4a4bf..9429eb6ab8a 100644
--- a/src/doc/rustc/src/platform-support/armv7r-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/armv7r-none-eabi.md
@@ -15,10 +15,13 @@ See [`arm-none-eabi`](arm-none-eabi.md) for information applicable to all
 
 ## Target maintainers
 
-[@chrisnc](https://github.com/chrisnc)
-[Rust Embedded Devices Working Group Arm Team]
+- [@chrisnc](https://github.com/chrisnc)
+- [Rust Embedded Devices Working Group Arm Team]
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
 
 [Rust Embedded Devices Working Group Arm Team]: https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Requirements
 
diff --git a/src/doc/rustc/src/platform-support/armv8r-none-eabihf.md b/src/doc/rustc/src/platform-support/armv8r-none-eabihf.md
index 0d5a36c3ee2..e465eb79f49 100644
--- a/src/doc/rustc/src/platform-support/armv8r-none-eabihf.md
+++ b/src/doc/rustc/src/platform-support/armv8r-none-eabihf.md
@@ -17,10 +17,13 @@ See [`arm-none-eabi`](arm-none-eabi.md) for information applicable to all
 
 ## Target maintainers
 
-[@chrisnc](https://github.com/chrisnc)
-[Rust Embedded Devices Working Group Arm Team]
+- [@chrisnc](https://github.com/chrisnc)
+- [Rust Embedded Devices Working Group Arm Team]
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
 
 [Rust Embedded Devices Working Group Arm Team]: https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Requirements
 
diff --git a/src/doc/rustc/src/platform-support/thumbv7em-none-eabi.md b/src/doc/rustc/src/platform-support/thumbv7em-none-eabi.md
index 98dcf9bd396..192e013d3a4 100644
--- a/src/doc/rustc/src/platform-support/thumbv7em-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/thumbv7em-none-eabi.md
@@ -22,7 +22,11 @@ See [`arm-none-eabi`](arm-none-eabi.md) for information applicable to all
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Target CPU and Target Feature options
 
diff --git a/src/doc/rustc/src/platform-support/thumbv7m-none-eabi.md b/src/doc/rustc/src/platform-support/thumbv7m-none-eabi.md
index d8f3970c8bf..b04cb7bfacf 100644
--- a/src/doc/rustc/src/platform-support/thumbv7m-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/thumbv7m-none-eabi.md
@@ -23,7 +23,11 @@ only option because there is no FPU support in [Armv7-M].
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Target CPU and Target Feature options
 
diff --git a/src/doc/rustc/src/platform-support/thumbv8m.base-none-eabi.md b/src/doc/rustc/src/platform-support/thumbv8m.base-none-eabi.md
index b16d450275d..104520854b4 100644
--- a/src/doc/rustc/src/platform-support/thumbv8m.base-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/thumbv8m.base-none-eabi.md
@@ -23,7 +23,11 @@ only option because there is no FPU support in [Armv8-M] Baseline.
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Target CPU and Target Feature options
 
diff --git a/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md b/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md
index a2d515d07ea..5cc535ce376 100644
--- a/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md
@@ -26,7 +26,11 @@ See [`arm-none-eabi`](arm-none-eabi.md) for information applicable to all
 
 ## Target maintainers
 
-[Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [Rust Embedded Devices Working Group Arm Team](https://github.com/rust-embedded/wg?tab=readme-ov-file#the-arm-team)
+- [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Target CPU and Target Feature options
 
diff --git a/src/doc/rustc/src/platform-support/unknown-uefi.md b/src/doc/rustc/src/platform-support/unknown-uefi.md
index 9587590d12d..e8989616b84 100644
--- a/src/doc/rustc/src/platform-support/unknown-uefi.md
+++ b/src/doc/rustc/src/platform-support/unknown-uefi.md
@@ -13,8 +13,12 @@ Available targets:
 
 ## Target maintainers
 
-[@dvdhrm](https://github.com/dvdhrm)
-[@nicholasbishop](https://github.com/nicholasbishop)
+- [@dvdhrm](https://github.com/dvdhrm)
+- [@nicholasbishop](https://github.com/nicholasbishop)
+- (for `aarch64-unknown-uefi` only) [@rust-lang/arm-maintainers][arm_maintainers] ([rust@arm.com][arm_email])
+
+[arm_maintainers]: https://github.com/rust-lang/team/blob/master/teams/arm-maintainers.toml
+[arm_email]: mailto:rust@arm.com
 
 ## Requirements
 
diff --git a/src/etc/rust_analyzer_eglot.el b/src/etc/rust_analyzer_eglot.el
index 3151cb1a6e7..e5abf67235a 100644
--- a/src/etc/rust_analyzer_eglot.el
+++ b/src/etc/rust_analyzer_eglot.el
@@ -6,6 +6,8 @@
                                        :overrideCommand ["python3"
                                                          "x.py"
                                                          "check"
+                                                         "--build-dir"
+                                                         "build-rust-analyzer"
                                                          "--json-output"])
                  :linkedProjects ["Cargo.toml"
                                   "compiler/rustc_codegen_cranelift/Cargo.toml"
@@ -13,9 +15,9 @@
                                   "library/Cargo.toml"
                                   "src/bootstrap/Cargo.toml"
                                   "src/tools/rust-analyzer/Cargo.toml"]
-                 :rustfmt ( :overrideCommand ["build/host/rustfmt/bin/rustfmt"
+                 :rustfmt ( :overrideCommand ["build-rust-analyzer/host/rustfmt/bin/rustfmt"
                                               "--edition=2024"])
-                 :procMacro ( :server "build/host/stage0/libexec/rust-analyzer-proc-macro-srv"
+                 :procMacro ( :server "build-rust-analyzer/host/stage0/libexec/rust-analyzer-proc-macro-srv"
                                       :enable t)
                  :cargo ( :buildScripts ( :enable t
                                                   :invocationLocation "root"
@@ -23,6 +25,8 @@
                                                   :overrideCommand ["python3"
                                                                     "x.py"
                                                                     "check"
+                                                                    "--build-dir"
+                                                                    "build-rust-analyzer"
                                                                     "--json-output"
                                                                     "--compile-time-deps"])]
                                         :sysrootSrc "./library"
diff --git a/src/etc/rust_analyzer_helix.toml b/src/etc/rust_analyzer_helix.toml
index 8c1782a1abc..e2de2a374cb 100644
--- a/src/etc/rust_analyzer_helix.toml
+++ b/src/etc/rust_analyzer_helix.toml
@@ -1,10 +1,10 @@
 # This config uses a separate build directory for rust-analyzer,
 # so that r-a's checks don't block user `x` commands and vice-verse.
-# R-a's build directory is located in `build/rust-analyzer`.
+# R-a's build directory is located in `build-rust-analyzer`.
 #
 # To build rustfmt and proc macro server for r-a run the following command:
 # ```
-# x b proc-macro-srv-cli rustfmt --stage 0 --build-dir build/rust-analyzer
+# x b proc-macro-srv-cli rustfmt --stage 0 --build-dir build-rust-analyzer
 # ```
 
 [language-server.rust-analyzer.config]
@@ -26,17 +26,17 @@ overrideCommand = [
     "check",
     "--json-output",
     "--build-dir",
-    "build/rust-analyzer",
+    "build-rust-analyzer",
 ]
 
 [language-server.rust-analyzer.config.rustfmt]
 overrideCommand = [
-    "build/rust-analyzer/host/rustfmt/bin/rustfmt",
+    "build-rust-analyzer/host/rustfmt/bin/rustfmt",
     "--edition=2024"
 ]
 
 [language-server.rust-analyzer.config.procMacro]
-server = "build/rust-analyzer/host/stage0/libexec/rust-analyzer-proc-macro-srv"
+server = "build-rust-analyzer/host/stage0/libexec/rust-analyzer-proc-macro-srv"
 enable = true
 
 [language-server.rust-analyzer.config.rustc]
@@ -58,6 +58,6 @@ overrideCommand = [
     "check",
     "--json-output",
     "--build-dir",
-    "build/rust-analyzer",
-    "--compile-time-deps"
+    "build-rust-analyzer",
+    "--compile-time-deps",
 ]
diff --git a/src/etc/rust_analyzer_settings.json b/src/etc/rust_analyzer_settings.json
index b31169857c5..f89e8a2df18 100644
--- a/src/etc/rust_analyzer_settings.json
+++ b/src/etc/rust_analyzer_settings.json
@@ -5,6 +5,8 @@
         "python3",
         "x.py",
         "check",
+        "--build-dir",
+        "build-rust-analyzer",
         "--json-output"
     ],
     "rust-analyzer.linkedProjects": [
@@ -16,10 +18,10 @@
         "src/tools/rust-analyzer/Cargo.toml"
     ],
     "rust-analyzer.rustfmt.overrideCommand": [
-        "${workspaceFolder}/build/host/rustfmt/bin/rustfmt",
+        "${workspaceFolder}/build-rust-analyzer/host/rustfmt/bin/rustfmt",
         "--edition=2024"
     ],
-    "rust-analyzer.procMacro.server": "${workspaceFolder}/build/host/stage0/libexec/rust-analyzer-proc-macro-srv",
+    "rust-analyzer.procMacro.server": "${workspaceFolder}/build-rust-analyzer/host/stage0/libexec/rust-analyzer-proc-macro-srv",
     "rust-analyzer.procMacro.enable": true,
     "rust-analyzer.cargo.buildScripts.enable": true,
     "rust-analyzer.cargo.buildScripts.invocationStrategy": "once",
@@ -27,6 +29,8 @@
         "python3",
         "x.py",
         "check",
+        "--build-dir",
+        "build-rust-analyzer",
         "--json-output",
         "--compile-time-deps"
     ],
diff --git a/src/etc/rust_analyzer_zed.json b/src/etc/rust_analyzer_zed.json
index 7eace92500e..d98a082a9b8 100644
--- a/src/etc/rust_analyzer_zed.json
+++ b/src/etc/rust_analyzer_zed.json
@@ -7,7 +7,15 @@
             "enable": true,
             "invocationLocation": "root",
             "invocationStrategy": "once",
-            "overrideCommand": ["python3", "x.py", "check", "--json-output", "--compile-time-deps"]
+            "overrideCommand": [
+              "python3",
+              "x.py",
+              "check",
+              "--build-dir",
+              "build-rust-analyzer",
+              "--compile-time-deps",
+              "--json-output"
+            ]
           },
           "extraEnv": {
             "RUSTC_BOOTSTRAP": "1"
@@ -17,7 +25,14 @@
         "check": {
           "invocationLocation": "root",
           "invocationStrategy": "once",
-          "overrideCommand": ["python3", "x.py", "check", "--json-output"]
+          "overrideCommand": [
+            "python3",
+            "x.py",
+            "check",
+            "--json-output",
+            "--build-dir",
+            "build-rust-analyzer"
+          ]
         },
         "linkedProjects": [
           "Cargo.toml",
@@ -29,14 +44,14 @@
         ],
         "procMacro": {
           "enable": true,
-          "server": "build/host/stage0/libexec/rust-analyzer-proc-macro-srv"
+          "server": "build-rust-analyzer/host/stage0/libexec/rust-analyzer-proc-macro-srv"
         },
         "rustc": {
           "source": "./Cargo.toml"
         },
         "rustfmt": {
           "overrideCommand": [
-            "build/host/rustfmt/bin/rustfmt",
+            "build-rust-analyzer/host/rustfmt/bin/rustfmt",
             "--edition=2024"
           ]
         },
diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs
index 6d959948918..65db816ad1a 100644
--- a/src/tools/compiletest/src/common.rs
+++ b/src/tools/compiletest/src/common.rs
@@ -7,6 +7,7 @@ use build_helper::git::GitConfig;
 use camino::{Utf8Path, Utf8PathBuf};
 use semver::Version;
 
+use crate::edition::Edition;
 use crate::executor::ColorConfig;
 use crate::fatal;
 use crate::util::{Utf8PathBufExt, add_dylib_path, string_enum};
@@ -612,10 +613,7 @@ pub struct Config {
     pub git_hash: bool,
 
     /// The default Rust edition.
-    ///
-    /// FIXME: perform stronger validation for this. There are editions that *definitely* exists,
-    /// but there might also be "future" edition.
-    pub edition: Option<String>,
+    pub edition: Option<Edition>,
 
     // Configuration for various run-make tests frobbing things like C compilers or querying about
     // various LLVM component information.
diff --git a/src/tools/compiletest/src/directives.rs b/src/tools/compiletest/src/directives.rs
index e6916610190..a79978d036c 100644
--- a/src/tools/compiletest/src/directives.rs
+++ b/src/tools/compiletest/src/directives.rs
@@ -16,10 +16,11 @@ use crate::directives::directive_names::{
     KNOWN_DIRECTIVE_NAMES, KNOWN_HTMLDOCCK_DIRECTIVE_NAMES, KNOWN_JSONDOCCK_DIRECTIVE_NAMES,
 };
 use crate::directives::needs::CachedNeedsConditions;
+use crate::edition::{Edition, parse_edition};
 use crate::errors::ErrorKind;
 use crate::executor::{CollectedTestDesc, ShouldPanic};
-use crate::help;
 use crate::util::static_regex;
+use crate::{fatal, help};
 
 pub(crate) mod auxiliary;
 mod cfg;
@@ -415,10 +416,18 @@ impl TestProps {
                         config.parse_name_value_directive(ln, COMPILE_FLAGS, testfile)
                     {
                         let flags = split_flags(&flags);
-                        for flag in &flags {
+                        for (i, flag) in flags.iter().enumerate() {
                             if flag == "--edition" || flag.starts_with("--edition=") {
                                 panic!("you must use `//@ edition` to configure the edition");
                             }
+                            if (flag == "-C"
+                                && flags.get(i + 1).is_some_and(|v| v.starts_with("incremental=")))
+                                || flag.starts_with("-Cincremental=")
+                            {
+                                panic!(
+                                    "you must use `//@ incremental` to enable incremental compilation"
+                                );
+                            }
                         }
                         self.compile_flags.extend(flags);
                     }
@@ -429,10 +438,13 @@ impl TestProps {
                         panic!("`compiler-flags` directive should be spelled `compile-flags`");
                     }
 
-                    if let Some(edition) = config.parse_edition(ln, testfile) {
+                    if let Some(range) = parse_edition_range(config, ln, testfile) {
                         // 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()));
+                        self.compile_flags.insert(
+                            0,
+                            format!("--edition={}", range.edition_to_test(config.edition)),
+                        );
                         has_edition = true;
                     }
 
@@ -1116,10 +1128,6 @@ impl Config {
         }
     }
 
-    fn parse_edition(&self, line: &DirectiveLine<'_>, testfile: &Utf8Path) -> Option<String> {
-        self.parse_name_value_directive(line, "edition", testfile)
-    }
-
     fn set_name_directive(&self, line: &DirectiveLine<'_>, directive: &str, value: &mut bool) {
         // If the flag is already true, don't bother looking at the directive.
         *value = *value || self.parse_name_directive(line, directive);
@@ -1761,3 +1769,86 @@ enum IgnoreDecision {
     Continue,
     Error { message: String },
 }
+
+fn parse_edition_range(
+    config: &Config,
+    line: &DirectiveLine<'_>,
+    testfile: &Utf8Path,
+) -> Option<EditionRange> {
+    let raw = config.parse_name_value_directive(line, "edition", testfile)?;
+    let line_number = line.line_number;
+
+    // Edition range is half-open: `[lower_bound, upper_bound)`
+    if let Some((lower_bound, upper_bound)) = raw.split_once("..") {
+        Some(match (maybe_parse_edition(lower_bound), maybe_parse_edition(upper_bound)) {
+            (Some(lower_bound), Some(upper_bound)) if upper_bound <= lower_bound => {
+                fatal!(
+                    "{testfile}:{line_number}: the left side of `//@ edition` cannot be greater than or equal to the right side"
+                );
+            }
+            (Some(lower_bound), Some(upper_bound)) => {
+                EditionRange::Range { lower_bound, upper_bound }
+            }
+            (Some(lower_bound), None) => EditionRange::RangeFrom(lower_bound),
+            (None, Some(_)) => {
+                fatal!(
+                    "{testfile}:{line_number}: `..edition` is not a supported range in `//@ edition`"
+                );
+            }
+            (None, None) => {
+                fatal!("{testfile}:{line_number}: `..` is not a supported range in `//@ edition`");
+            }
+        })
+    } else {
+        match maybe_parse_edition(&raw) {
+            Some(edition) => Some(EditionRange::Exact(edition)),
+            None => {
+                fatal!("{testfile}:{line_number}: empty value for `//@ edition`");
+            }
+        }
+    }
+}
+
+fn maybe_parse_edition(mut input: &str) -> Option<Edition> {
+    input = input.trim();
+    if input.is_empty() {
+        return None;
+    }
+    Some(parse_edition(input))
+}
+
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
+enum EditionRange {
+    Exact(Edition),
+    RangeFrom(Edition),
+    /// Half-open range: `[lower_bound, upper_bound)`
+    Range {
+        lower_bound: Edition,
+        upper_bound: Edition,
+    },
+}
+
+impl EditionRange {
+    fn edition_to_test(&self, requested: impl Into<Option<Edition>>) -> Edition {
+        let min_edition = Edition::Year(2015);
+        let requested = requested.into().unwrap_or(min_edition);
+
+        match *self {
+            EditionRange::Exact(exact) => exact,
+            EditionRange::RangeFrom(lower_bound) => {
+                if requested >= lower_bound {
+                    requested
+                } else {
+                    lower_bound
+                }
+            }
+            EditionRange::Range { lower_bound, upper_bound } => {
+                if requested >= lower_bound && requested < upper_bound {
+                    requested
+                } else {
+                    lower_bound
+                }
+            }
+        }
+    }
+}
diff --git a/src/tools/compiletest/src/directives/tests.rs b/src/tools/compiletest/src/directives/tests.rs
index 16cf76be9a5..93621192d4b 100644
--- a/src/tools/compiletest/src/directives/tests.rs
+++ b/src/tools/compiletest/src/directives/tests.rs
@@ -4,10 +4,11 @@ use camino::Utf8Path;
 use semver::Version;
 
 use super::{
-    DirectivesCache, EarlyProps, extract_llvm_version, extract_version_range, iter_directives,
-    parse_normalize_rule,
+    DirectivesCache, EarlyProps, Edition, EditionRange, extract_llvm_version,
+    extract_version_range, iter_directives, parse_normalize_rule,
 };
 use crate::common::{Config, Debugger, TestMode};
+use crate::directives::parse_edition;
 use crate::executor::{CollectedTestDesc, ShouldPanic};
 
 fn make_test_description<R: Read>(
@@ -73,6 +74,7 @@ fn test_parse_normalize_rule() {
 struct ConfigBuilder {
     mode: Option<String>,
     channel: Option<String>,
+    edition: Option<Edition>,
     host: Option<String>,
     target: Option<String>,
     stage: Option<u32>,
@@ -96,6 +98,11 @@ impl ConfigBuilder {
         self
     }
 
+    fn edition(&mut self, e: Edition) -> &mut Self {
+        self.edition = Some(e);
+        self
+    }
+
     fn host(&mut self, s: &str) -> &mut Self {
         self.host = Some(s.to_owned());
         self
@@ -183,6 +190,10 @@ impl ConfigBuilder {
         ];
         let mut args: Vec<String> = args.iter().map(ToString::to_string).collect();
 
+        if let Some(edition) = &self.edition {
+            args.push(format!("--edition={edition}"));
+        }
+
         if let Some(ref llvm_version) = self.llvm_version {
             args.push("--llvm-version".to_owned());
             args.push(llvm_version.clone());
@@ -941,3 +952,130 @@ fn test_needs_target_std() {
     let config = cfg().target("x86_64-unknown-linux-gnu").build();
     assert!(!check_ignore(&config, "//@ needs-target-std"));
 }
+
+fn parse_edition_range(line: &str) -> Option<EditionRange> {
+    let config = cfg().build();
+    let line = super::DirectiveLine { line_number: 0, revision: None, raw_directive: line };
+
+    super::parse_edition_range(&config, &line, "tmp.rs".into())
+}
+
+#[test]
+fn test_parse_edition_range() {
+    assert_eq!(None, parse_edition_range("hello-world"));
+    assert_eq!(None, parse_edition_range("edition"));
+
+    assert_eq!(Some(EditionRange::Exact(2018.into())), parse_edition_range("edition: 2018"));
+    assert_eq!(Some(EditionRange::Exact(2021.into())), parse_edition_range("edition:2021"));
+    assert_eq!(Some(EditionRange::Exact(2024.into())), parse_edition_range("edition: 2024 "));
+    assert_eq!(Some(EditionRange::Exact(Edition::Future)), parse_edition_range("edition: future"));
+
+    assert_eq!(Some(EditionRange::RangeFrom(2018.into())), parse_edition_range("edition: 2018.."));
+    assert_eq!(Some(EditionRange::RangeFrom(2021.into())), parse_edition_range("edition:2021 .."));
+    assert_eq!(
+        Some(EditionRange::RangeFrom(2024.into())),
+        parse_edition_range("edition: 2024 .. ")
+    );
+    assert_eq!(
+        Some(EditionRange::RangeFrom(Edition::Future)),
+        parse_edition_range("edition: future.. ")
+    );
+
+    assert_eq!(
+        Some(EditionRange::Range { lower_bound: 2018.into(), upper_bound: 2024.into() }),
+        parse_edition_range("edition: 2018..2024")
+    );
+    assert_eq!(
+        Some(EditionRange::Range { lower_bound: 2015.into(), upper_bound: 2021.into() }),
+        parse_edition_range("edition:2015 .. 2021 ")
+    );
+    assert_eq!(
+        Some(EditionRange::Range { lower_bound: 2021.into(), upper_bound: 2027.into() }),
+        parse_edition_range("edition: 2021 .. 2027 ")
+    );
+    assert_eq!(
+        Some(EditionRange::Range { lower_bound: 2021.into(), upper_bound: Edition::Future }),
+        parse_edition_range("edition: 2021..future")
+    );
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_empty() {
+    parse_edition_range("edition:");
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_invalid_edition() {
+    parse_edition_range("edition: hello");
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_double_dots() {
+    parse_edition_range("edition: ..");
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_inverted_range() {
+    parse_edition_range("edition: 2021..2015");
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_inverted_range_future() {
+    parse_edition_range("edition: future..2015");
+}
+
+#[test]
+#[should_panic]
+fn test_parse_edition_range_empty_range() {
+    parse_edition_range("edition: 2021..2021");
+}
+
+#[track_caller]
+fn assert_edition_to_test(
+    expected: impl Into<Edition>,
+    range: EditionRange,
+    default: Option<Edition>,
+) {
+    let mut cfg = cfg();
+    if let Some(default) = default {
+        cfg.edition(default);
+    }
+    assert_eq!(expected.into(), range.edition_to_test(cfg.build().edition));
+}
+
+#[test]
+fn test_edition_range_edition_to_test() {
+    let e2015 = parse_edition("2015");
+    let e2018 = parse_edition("2018");
+    let e2021 = parse_edition("2021");
+    let e2024 = parse_edition("2024");
+    let efuture = parse_edition("future");
+
+    let exact = EditionRange::Exact(2021.into());
+    assert_edition_to_test(2021, exact, None);
+    assert_edition_to_test(2021, exact, Some(e2018));
+    assert_edition_to_test(2021, exact, Some(efuture));
+
+    assert_edition_to_test(Edition::Future, EditionRange::Exact(Edition::Future), None);
+
+    let greater_equal_than = EditionRange::RangeFrom(2021.into());
+    assert_edition_to_test(2021, greater_equal_than, None);
+    assert_edition_to_test(2021, greater_equal_than, Some(e2015));
+    assert_edition_to_test(2021, greater_equal_than, Some(e2018));
+    assert_edition_to_test(2021, greater_equal_than, Some(e2021));
+    assert_edition_to_test(2024, greater_equal_than, Some(e2024));
+    assert_edition_to_test(Edition::Future, greater_equal_than, Some(efuture));
+
+    let range = EditionRange::Range { lower_bound: 2018.into(), upper_bound: 2024.into() };
+    assert_edition_to_test(2018, range, None);
+    assert_edition_to_test(2018, range, Some(e2015));
+    assert_edition_to_test(2018, range, Some(e2018));
+    assert_edition_to_test(2021, range, Some(e2021));
+    assert_edition_to_test(2018, range, Some(e2024));
+    assert_edition_to_test(2018, range, Some(efuture));
+}
diff --git a/src/tools/compiletest/src/edition.rs b/src/tools/compiletest/src/edition.rs
new file mode 100644
index 00000000000..36550cf5b2b
--- /dev/null
+++ b/src/tools/compiletest/src/edition.rs
@@ -0,0 +1,35 @@
+use crate::fatal;
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum Edition {
+    // Note that the ordering here is load-bearing, as we want the future edition to be greater than
+    // any year-based edition.
+    Year(u32),
+    Future,
+}
+
+impl std::fmt::Display for Edition {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Edition::Year(year) => write!(f, "{year}"),
+            Edition::Future => f.write_str("future"),
+        }
+    }
+}
+
+impl From<u32> for Edition {
+    fn from(value: u32) -> Self {
+        Edition::Year(value)
+    }
+}
+
+pub fn parse_edition(mut input: &str) -> Edition {
+    input = input.trim();
+    if input == "future" {
+        Edition::Future
+    } else {
+        Edition::Year(input.parse().unwrap_or_else(|_| {
+            fatal!("`{input}` doesn't look like an edition");
+        }))
+    }
+}
diff --git a/src/tools/compiletest/src/lib.rs b/src/tools/compiletest/src/lib.rs
index 15e31dadf97..2d759279f34 100644
--- a/src/tools/compiletest/src/lib.rs
+++ b/src/tools/compiletest/src/lib.rs
@@ -7,6 +7,7 @@ pub mod common;
 mod debuggers;
 pub mod diagnostics;
 pub mod directives;
+pub mod edition;
 pub mod errors;
 mod executor;
 mod json;
@@ -39,6 +40,7 @@ use crate::common::{
     expected_output_path, output_base_dir, output_relative_path,
 };
 use crate::directives::DirectivesCache;
+use crate::edition::parse_edition;
 use crate::executor::{CollectedTest, ColorConfig};
 
 /// Creates the `Config` instance for this invocation of compiletest.
@@ -449,7 +451,7 @@ pub fn parse_config(args: Vec<String>) -> Config {
         has_enzyme,
         channel: matches.opt_str("channel").unwrap(),
         git_hash: matches.opt_present("git-hash"),
-        edition: matches.opt_str("edition"),
+        edition: matches.opt_str("edition").as_deref().map(parse_edition),
 
         cc: matches.opt_str("cc").unwrap(),
         cxx: matches.opt_str("cxx").unwrap(),
diff --git a/src/tools/miri/tests/pass/static_align.rs b/src/tools/miri/tests/pass/static_align.rs
index f292f028568..bc6a9bf8af7 100644
--- a/src/tools/miri/tests/pass/static_align.rs
+++ b/src/tools/miri/tests/pass/static_align.rs
@@ -1,4 +1,7 @@
 #![feature(static_align)]
+#![deny(non_upper_case_globals)]
+
+use std::cell::Cell;
 
 // When a static uses `align(N)`, its address should be a multiple of `N`.
 
@@ -8,7 +11,64 @@ static FOO: u64 = 0;
 #[rustc_align_static(512)]
 static BAR: u64 = 0;
 
+struct HasDrop(*const HasDrop);
+
+impl Drop for HasDrop {
+    fn drop(&mut self) {
+        assert_eq!(core::ptr::from_mut(self).cast_const(), self.0);
+    }
+}
+
+thread_local! {
+    #[rustc_align_static(4096)]
+    static LOCAL: u64 = 0;
+
+    #[allow(unused_mut, reason = "test attribute handling")]
+    #[cfg_attr(true, rustc_align_static(4096))]
+    static CONST_LOCAL: u64 = const { 0 };
+
+    #[cfg_attr(any(true), cfg_attr(true, rustc_align_static(4096)))]
+    #[allow(unused_mut, reason = "test attribute handling")]
+    static HASDROP_LOCAL: Cell<HasDrop> = Cell::new(HasDrop(core::ptr::null()));
+
+    /// I love doc comments.
+    #[allow(unused_mut, reason = "test attribute handling")]
+    #[cfg_attr(all(),
+      cfg_attr(any(true),
+      cfg_attr(true, rustc_align_static(4096))))]
+    #[allow(unused_mut, reason = "test attribute handling")]
+    /// I love doc comments.
+    static HASDROP_CONST_LOCAL: Cell<HasDrop> = const { Cell::new(HasDrop(core::ptr::null())) };
+
+    #[cfg_attr(true,)]
+    #[cfg_attr(false,)]
+    #[cfg_attr(
+        true,
+        rustc_align_static(32),
+        cfg_attr(true, allow(non_upper_case_globals, reason = "test attribute handling")),
+        cfg_attr(false,)
+    )]
+    #[cfg_attr(false, rustc_align_static(0))]
+    static more_attr_testing: u64 = 0;
+}
+
+fn thread_local_ptr<T>(key: &'static std::thread::LocalKey<T>) -> *const T {
+    key.with(|local| core::ptr::from_ref::<T>(local))
+}
+
 fn main() {
     assert!(core::ptr::from_ref(&FOO).addr().is_multiple_of(256));
     assert!(core::ptr::from_ref(&BAR).addr().is_multiple_of(512));
+
+    assert!(thread_local_ptr(&LOCAL).addr().is_multiple_of(4096));
+    assert!(thread_local_ptr(&CONST_LOCAL).addr().is_multiple_of(4096));
+    assert!(thread_local_ptr(&HASDROP_LOCAL).addr().is_multiple_of(4096));
+    assert!(thread_local_ptr(&HASDROP_CONST_LOCAL).addr().is_multiple_of(4096));
+    assert!(thread_local_ptr(&more_attr_testing).addr().is_multiple_of(32));
+
+    // Test that address (and therefore alignment) is maintained during drop
+    let hasdrop_ptr = thread_local_ptr(&HASDROP_LOCAL);
+    core::mem::forget(HASDROP_LOCAL.replace(HasDrop(hasdrop_ptr.cast())));
+    let hasdrop_const_ptr = thread_local_ptr(&HASDROP_CONST_LOCAL);
+    core::mem::forget(HASDROP_CONST_LOCAL.replace(HasDrop(hasdrop_const_ptr.cast())));
 }
diff --git a/src/tools/miri/tests/pass/thread_local-panic.rs b/src/tools/miri/tests/pass/thread_local-panic.rs
new file mode 100644
index 00000000000..549acd23987
--- /dev/null
+++ b/src/tools/miri/tests/pass/thread_local-panic.rs
@@ -0,0 +1,8 @@
+thread_local! {
+    static LOCAL: u64 = panic!();
+
+}
+
+fn main() {
+    let _ = std::panic::catch_unwind(|| LOCAL.with(|_| {}));
+}
diff --git a/src/tools/miri/tests/pass/thread_local-panic.stderr b/src/tools/miri/tests/pass/thread_local-panic.stderr
new file mode 100644
index 00000000000..e69340a8102
--- /dev/null
+++ b/src/tools/miri/tests/pass/thread_local-panic.stderr
@@ -0,0 +1,5 @@
+
+thread 'main' ($TID) panicked at tests/pass/thread_local-panic.rs:LL:CC:
+explicit panic
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
+note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect