Initial import am: 2970041c34 am: 59f583acb4 am: a1d0e5dd7b am: e423295327 am: c89a473751

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/linkme/+/2607228

Change-Id: I1b7d8c24551caff1092e22520b5e90a10f3c4045
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

40 files changed, 1451 insertions, 0 deletions

diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
new file mode 100644
index 0000000..58bba9e
--- /dev/null
+++ b/.cargo_vcs_info.json
@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "a0c3cdd977aefdf6674754ca8b1dc4aa41a7f0ae"
+  },
+  "path_in_vcs": ""
+}
\ No newline at end of file
diff --git a/.clippy.toml b/.clippy.toml
new file mode 100644
index 0000000..66826c0
--- /dev/null
+++ b/.clippy.toml
@@ -0,0 +1 @@
+msrv = "1.62.0"
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..7507077
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+github: dtolnay
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..2fcd41f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,107 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule: [cron: "40 1 * * *"]
+
+permissions:
+  contents: read
+
+env:
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  pre_ci:
+    uses: dtolnay/.github/.github/workflows/pre_ci.yml@master
+
+  test:
+    name: ${{matrix.name || format('Rust {0}', matrix.rust)}}
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ${{matrix.os}}-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [nightly, beta, stable, 1.62.0]
+        os: [ubuntu]
+        include:
+          - name: macOS
+            os: macos
+            rust: nightly
+          - name: Windows (gnu)
+            os: windows
+            rust: nightly-x86_64-pc-windows-gnu
+          - name: Windows (msvc)
+            os: windows
+            rust: nightly-x86_64-pc-windows-msvc
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{matrix.rust}}
+      - name: Enable deny(non_exhaustive_omitted_patterns)
+        run: echo RUSTFLAGS=${RUSTFLAGS}\ --cfg=exhaustive >> $GITHUB_ENV
+        if: matrix.rust == 'nightly'
+      - name: Enable type layout randomization
+        run: echo RUSTFLAGS=${RUSTFLAGS}\ -Zrandomize-layout >> $GITHUB_ENV
+        if: matrix.rust == 'nightly'
+      - run: cargo check --manifest-path tests/crate/Cargo.toml
+      - run: cargo test -p linkme -p linkme-impl
+        # windows-gnu: https://github.com/dtolnay/linkme/issues/25
+        continue-on-error: ${{matrix.rust == 'nightly-x86_64-pc-windows-gnu'}}
+      - run: cargo test -p linkme -p linkme-impl --features used_linker
+        if: startsWith(matrix.rust, 'nightly')
+        continue-on-error: ${{matrix.rust == 'nightly-x86_64-pc-windows-gnu'}}
+      - run: cargo test -p linkme -p linkme-impl --release
+        continue-on-error: ${{matrix.rust == 'nightly-x86_64-pc-windows-gnu'}}
+      - run: cargo test -p linkme -p linkme-impl --release --features used_linker
+        if: startsWith(matrix.rust, 'nightly')
+        continue-on-error: ${{matrix.rust == 'nightly-x86_64-pc-windows-gnu'}}
+
+  cortex:
+    name: Cortex-M
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          target: thumbv7m-none-eabi
+      - name: Install QEMU
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y qemu-system-arm
+      - run: cargo run --release
+        env:
+          RUSTFLAGS: -C link-arg=-Tlink.x -D warnings
+        working-directory: tests/cortex
+        continue-on-error: true
+      - run: cargo run --release --features used_linker
+        env:
+          RUSTFLAGS: -C link-arg=-Tlink.x -D warnings
+        working-directory: tests/cortex
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@clippy
+      - run: cargo clippy --tests -- -Dclippy::all -Dclippy::pedantic
+
+  outdated:
+    name: Outdated
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/install@cargo-outdated
+      - run: cargo outdated --workspace --exit-code 1
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2f88dba
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+**/*.rs.bk
+Cargo.lock
\ No newline at end of file
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..86d24bf
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,21 @@
+// This file is generated by cargo2android.py --config cargo2android.json.
+// Do not modify this file as changes will be overridden on upgrade.
+
+
+
+rust_library {
+    name: "liblinkme",
+    host_supported: true,
+    crate_name: "linkme",
+    cargo_env_compat: true,
+    cargo_pkg_version: "0.3.9",
+    srcs: ["src/lib.rs"],
+    edition: "2021",
+    proc_macros: ["liblinkme_impl"],
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    product_available: true,
+    vendor_available: true,
+}
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..d9cf97f
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,54 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.62"
+name = "linkme"
+version = "0.3.9"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+description = "Safe cross-platform linker shenanigans"
+documentation = "https://docs.rs/linkme"
+readme = "README.md"
+keywords = ["linkage"]
+categories = [
+    "development-tools::build-utils",
+    "development-tools::procedural-macro-helpers",
+    "no-std",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/linkme"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[lib]
+doc-scrape-examples = false
+
+[[test]]
+name = "module_2015"
+edition = "2015"
+
+[dependencies.linkme-impl]
+version = "=0.3.9"
+
+[dev-dependencies.once_cell]
+version = "1.16"
+
+[dev-dependencies.rustversion]
+version = "1.0"
+
+[dev-dependencies.trybuild]
+version = "1.0.66"
+features = ["diff"]
+
+[features]
+used_linker = ["linkme-impl/used_linker"]
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
new file mode 100644
index 0000000..0c21208
--- /dev/null
+++ b/Cargo.toml.orig
@@ -0,0 +1,36 @@
+[package]
+name = "linkme"
+version = "0.3.9"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+categories = ["development-tools::build-utils", "development-tools::procedural-macro-helpers", "no-std"]
+description = "Safe cross-platform linker shenanigans"
+documentation = "https://docs.rs/linkme"
+edition = "2021"
+keywords = ["linkage"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/linkme"
+rust-version = "1.62"
+
+[[test]]
+name = "module_2015"
+edition = "2015"
+
+[features]
+used_linker = ["linkme-impl/used_linker"]
+
+[dependencies]
+linkme-impl = { version = "=0.3.9", path = "impl" }
+
+[dev-dependencies]
+once_cell = "1.16"
+rustversion = "1.0"
+trybuild = { version = "1.0.66", features = ["diff"] }
+
+[workspace]
+members = ["impl", "tests/cortex", "tests/crate"]
+
+[lib]
+doc-scrape-examples = false
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
diff --git a/LICENSE b/LICENSE
new file mode 120000
index 0000000..6b579aa
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1 @@
+LICENSE-APACHE
\ No newline at end of file
diff --git a/LICENSE-APACHE b/LICENSE-APACHE
new file mode 100644
index 0000000..1b5ec8b
--- /dev/null
+++ b/LICENSE-APACHE
@@ -0,0 +1,176 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
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+   "Legal Entity" shall mean the union of the acting entity and all
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+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
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+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
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+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
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+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
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+   communication on electronic mailing lists, source code control systems,
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+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
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+2. Grant of Copyright License. Subject to the terms and conditions of
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+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+3. Grant of Patent License. Subject to the terms and conditions of
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+   institute patent litigation against any entity (including a
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+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
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+   meet the following conditions:
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+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
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+   (c) You must retain, in the Source form of any Derivative Works
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+   (d) If the Work includes a "NOTICE" text file as part of its
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+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
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+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
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+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
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+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..31aa793
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..06d2359
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,20 @@
+name: "linkme"
+description: "Safe cross-platform linker shenanigans"
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/linkme"
+  }
+  url {
+    type: ARCHIVE
+    value: "https://static.crates.io/crates/linkme/linkme-0.3.9.crate"
+  }
+  version: "0.3.9"
+  # Dual-licensed, using the least restrictive per go/thirdpartylicenses#same.
+  license_type: NOTICE
+  last_upgrade_date {
+    year: 2023
+    month: 5
+    day: 9
+  }
+}
diff --git a/MODULE_LICENSE_APACHE2 b/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/MODULE_LICENSE_APACHE2
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..45dc4dd
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/prebuilts/rust:master:/OWNERS
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..de15c56
--- /dev/null
+++ b/README.md
@@ -0,0 +1,151 @@
+## Linkme: safe cross-platform linker shenanigans
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/linkme-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/linkme)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/linkme.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/linkme)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-linkme-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/linkme)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/linkme/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/linkme/actions?query=branch%3Amaster)
+
+| Component | Linux | macOS | Windows | FreeBSD | illumos | Other...<sup>†</sup> |
+|:---|:---:|:---:|:---:|:---:|:---:|:---:|
+| [Distributed slice] | 💚 | 💚 | 💚 | 💚 | 💚 | |
+
+<b><sup>†</sup></b> We welcome PRs adding support for any platforms not listed
+here.
+
+[Distributed slice]: #distributed-slice
+
+```toml
+[dependencies]
+linkme = "0.3"
+```
+
+*Supports rustc 1.62+*
+
+<br>
+
+# Distributed slice
+
+A distributed slice is a collection of static elements that are gathered into a
+contiguous section of the binary by the linker. Slice elements may be defined
+individually from anywhere in the dependency graph of the final binary.
+
+The implementation is based on `link_section` attributes and platform-specific
+linker support. It does not involve life-before-main or any other runtime
+initialization on any platform. This is a zero-cost safe abstraction that
+operates entirely during compilation and linking.
+
+### Declaration
+
+A static distributed slice is declared by writing `#[distributed_slice]` on a
+static item whose type is `[T]` for some type `T`. The initializer expression
+must be `[..]` to indicate that elements come from elsewhere.
+
+```rust
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+```
+
+### Elements
+
+Slice elements may be registered into a distributed slice by a
+`#[distributed_slice(...)]` attribute in which the path to the distributed slice
+is given in the parentheses. The initializer is required to be a const
+expression.
+
+```rust
+use linkme::distributed_slice;
+use other_crate::BENCHMARKS;
+
+#[distributed_slice(BENCHMARKS)]
+static BENCH_DESERIALIZE: fn(&mut Bencher) = bench_deserialize;
+
+fn bench_deserialize(b: &mut Bencher) {
+    /* ... */
+}
+```
+
+Elements may be defined in the same crate that declares the distributed slice,
+or in any downstream crate. Elements across all crates linked into the final
+binary will be observed to be present in the slice at runtime.
+
+The distributed slice behaves in all ways like `&'static [T]`.
+
+```rust
+fn main() {
+    // Iterate the elements.
+    for bench in BENCHMARKS {
+        /* ... */
+    }
+
+    // Index into the elements.
+    let first = BENCHMARKS[0];
+
+    // Slice the elements.
+    let except_first = &BENCHMARKS[1..];
+
+    // Invoke methods on the underlying slice.
+    let len = BENCHMARKS.len();
+}
+```
+
+The compiler will require that the static element type matches with the element
+type of the distributed slice. If the two do not match, the program will not
+compile:
+
+```rust
+#[distributed_slice(BENCHMARKS)]
+static BENCH_WTF: usize = 999;
+```
+
+```console
+error[E0308]: mismatched types
+  --> src/distributed_slice.rs:65:19
+   |
+17 | static BENCH_WTF: usize = 999;
+   |                   ^^^^^ expected fn pointer, found `usize`
+   |
+   = note: expected fn pointer `fn(&mut other_crate::Bencher)`
+                    found type `usize`
+```
+
+### Function elements
+
+As a shorthand for the common case of distributed slices containing function
+pointers, the distributed\_slice attribute may be applied directly to a function
+definition to place a pointer to that function into a distributed slice.
+
+```rust
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+
+// Equivalent to:
+//
+//    #[distributed_slice(BENCHMARKS)]
+//    static _: fn(&mut Bencher) = bench_deserialize;
+//
+#[distributed_slice(BENCHMARKS)]
+fn bench_deserialize(b: &mut Bencher) {
+    /* ... */
+}
+```
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+</sub>
diff --git a/cargo2android.json b/cargo2android.json
new file mode 100644
index 0000000..3224ff7
--- /dev/null
+++ b/cargo2android.json
@@ -0,0 +1,6 @@
+{
+  "dependencies": true,
+  "device": true,
+  "run": true,
+  "test": true
+}
\ No newline at end of file
diff --git a/patches/std.diff b/patches/std.diff
new file mode 100644
index 0000000..a852d47
--- /dev/null
+++ b/patches/std.diff
@@ -0,0 +1,15 @@
+diff --git a/src/lib.rs b/src/lib.rs
+index 396057c..d460938 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -117,6 +117,10 @@
+     clippy::unused_self
+ )]
+ 
++// ANDROID: Use std to allow building as a dylib.
++#[cfg(android_dylib)]
++extern crate std;
++
+ mod distributed_slice;
+ 
+ // Not public API.
diff --git a/src/distributed_slice.rs b/src/distributed_slice.rs
new file mode 100644
index 0000000..707e043
--- /dev/null
+++ b/src/distributed_slice.rs
@@ -0,0 +1,294 @@
+use core::hint;
+use core::mem;
+use core::ops::Deref;
+use core::slice;
+
+use crate::__private::Slice;
+
+/// Collection of static elements that are gathered into a contiguous section of
+/// the binary by the linker.
+///
+/// The implementation is based on `link_section` attributes and
+/// platform-specific linker support. It does not involve life-before-main or
+/// any other runtime initialization on any platform. This is a zero-cost safe
+/// abstraction that operates entirely during compilation and linking.
+///
+/// ## Declaration
+///
+/// A static distributed slice may be declared by writing `#[distributed_slice]`
+/// on a static item whose type is `[T]` for some type `T`. The initializer
+/// expression must be `[..]` to indicate that elements come from elsewhere.
+///
+/// ```
+/// # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+/// #
+/// # struct Bencher;
+/// #
+/// use linkme::distributed_slice;
+///
+/// #[distributed_slice]
+/// pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+/// ```
+///
+/// The attribute rewrites the `[T]` type of the static into
+/// `DistributedSlice<[T]>`, so the static in the example technically has type
+/// `DistributedSlice<[fn(&mut Bencher)]>`.
+///
+/// ## Elements
+///
+/// Slice elements may be registered into a distributed slice by a
+/// `#[distributed_slice(...)]` attribute in which the path to the distributed
+/// slice is given in the parentheses. The initializer is required to be a const
+/// expression.
+///
+/// Elements may be defined in the same crate that declares the distributed
+/// slice, or in any downstream crate. Elements across all crates linked into
+/// the final binary will be observed to be present in the slice at runtime.
+///
+/// ```
+/// # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+/// #
+/// # mod other_crate {
+/// #     use linkme::distributed_slice;
+/// #
+/// #     pub struct Bencher;
+/// #
+/// #     #[distributed_slice]
+/// #     pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+/// # }
+/// #
+/// # use other_crate::Bencher;
+/// #
+/// use linkme::distributed_slice;
+/// use other_crate::BENCHMARKS;
+///
+/// #[distributed_slice(BENCHMARKS)]
+/// static BENCH_DESERIALIZE: fn(&mut Bencher) = bench_deserialize;
+///
+/// fn bench_deserialize(b: &mut Bencher) {
+///     /* ... */
+/// }
+/// ```
+///
+/// The compiler will require that the static element type matches with the
+/// element type of the distributed slice. If the two do not match, the program
+/// will not compile.
+///
+/// ```compile_fail
+/// # mod other_crate {
+/// #     use linkme::distributed_slice;
+/// #
+/// #     pub struct Bencher;
+/// #
+/// #     #[distributed_slice]
+/// #     pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+/// # }
+/// #
+/// # use linkme::distributed_slice;
+/// # use other_crate::BENCHMARKS;
+/// #
+/// #[distributed_slice(BENCHMARKS)]
+/// static BENCH_WTF: usize = 999;
+/// ```
+///
+/// ```text
+/// error[E0308]: mismatched types
+///   --> src/distributed_slice.rs:65:19
+///    |
+/// 17 | static BENCH_WTF: usize = 999;
+///    |                   ^^^^^ expected fn pointer, found `usize`
+///    |
+///    = note: expected fn pointer `fn(&mut other_crate::Bencher)`
+///                     found type `usize`
+/// ```
+///
+/// ## Function elements
+///
+/// As a shorthand for the common case of distributed slices containing function
+/// pointers, the distributed\_slice attribute may be applied directly to a
+/// function definition to place a pointer to that function into a distributed
+/// slice.
+///
+/// ```
+/// # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+/// #
+/// # pub struct Bencher;
+/// #
+/// use linkme::distributed_slice;
+///
+/// #[distributed_slice]
+/// pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+///
+/// // Equivalent to:
+/// //
+/// //    #[distributed_slice(BENCHMARKS)]
+/// //    static _: fn(&mut Bencher) = bench_deserialize;
+/// //
+/// #[distributed_slice(BENCHMARKS)]
+/// fn bench_deserialize(b: &mut Bencher) {
+///     /* ... */
+/// }
+/// ```
+pub struct DistributedSlice<T: ?Sized + Slice> {
+    name: &'static str,
+    section_start: StaticPtr<T::Element>,
+    section_stop: StaticPtr<T::Element>,
+    dupcheck_start: StaticPtr<usize>,
+    dupcheck_stop: StaticPtr<usize>,
+}
+
+struct StaticPtr<T> {
+    ptr: *const T,
+}
+
+unsafe impl<T> Send for StaticPtr<T> {}
+
+unsafe impl<T> Sync for StaticPtr<T> {}
+
+impl<T> Copy for StaticPtr<T> {}
+
+impl<T> Clone for StaticPtr<T> {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl<T> DistributedSlice<[T]> {
+    #[doc(hidden)]
+    #[cfg(any(
+        target_os = "none",
+        target_os = "linux",
+        target_os = "macos",
+        target_os = "ios",
+        target_os = "tvos",
+        target_os = "illumos",
+        target_os = "freebsd"
+    ))]
+    pub const unsafe fn private_new(
+        name: &'static str,
+        section_start: *const T,
+        section_stop: *const T,
+        dupcheck_start: *const usize,
+        dupcheck_stop: *const usize,
+    ) -> Self {
+        DistributedSlice {
+            name,
+            section_start: StaticPtr { ptr: section_start },
+            section_stop: StaticPtr { ptr: section_stop },
+            dupcheck_start: StaticPtr {
+                ptr: dupcheck_start,
+            },
+            dupcheck_stop: StaticPtr { ptr: dupcheck_stop },
+        }
+    }
+
+    #[doc(hidden)]
+    #[cfg(target_os = "windows")]
+    pub const unsafe fn private_new(
+        name: &'static str,
+        section_start: *const [T; 0],
+        section_stop: *const [T; 0],
+        dupcheck_start: *const (),
+        dupcheck_stop: *const (),
+    ) -> Self {
+        DistributedSlice {
+            name,
+            section_start: StaticPtr {
+                ptr: section_start as *const T,
+            },
+            section_stop: StaticPtr {
+                ptr: section_stop as *const T,
+            },
+            dupcheck_start: StaticPtr {
+                ptr: dupcheck_start as *const usize,
+            },
+            dupcheck_stop: StaticPtr {
+                ptr: dupcheck_stop as *const usize,
+            },
+        }
+    }
+
+    #[doc(hidden)]
+    #[inline]
+    pub unsafe fn private_typecheck(self, element: T) {
+        mem::forget(element);
+    }
+}
+
+impl<T> DistributedSlice<[T]> {
+    /// Retrieve a contiguous slice containing all the elements linked into this
+    /// program.
+    ///
+    /// **Note**: Ordinarily this method should not need to be called because
+    /// `DistributedSlice<[T]>` already behaves like `&'static [T]` in most ways
+    /// through the power of `Deref`. In particular, iteration and indexing and
+    /// method calls can all happen directly on the static without calling
+    /// `static_slice()`.
+    ///
+    /// ```no_run
+    /// # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+    /// #
+    /// # struct Bencher;
+    /// #
+    /// use linkme::distributed_slice;
+    ///
+    /// #[distributed_slice]
+    /// static BENCHMARKS: [fn(&mut Bencher)] = [..];
+    ///
+    /// fn main() {
+    ///     // Iterate the elements.
+    ///     for bench in BENCHMARKS {
+    ///         /* ... */
+    ///     }
+    ///
+    ///     // Index into the elements.
+    ///     let first = BENCHMARKS[0];
+    ///
+    ///     // Slice the elements.
+    ///     let except_first = &BENCHMARKS[1..];
+    ///
+    ///     // Invoke methods on the underlying slice.
+    ///     let len = BENCHMARKS.len();
+    /// }
+    /// ```
+    pub fn static_slice(self) -> &'static [T] {
+        if self.dupcheck_start.ptr.wrapping_add(1) < self.dupcheck_stop.ptr {
+            panic!("duplicate #[distributed_slice] with name \"{}\"", self.name);
+        }
+
+        let stride = mem::size_of::<T>();
+        let start = self.section_start.ptr;
+        let stop = self.section_stop.ptr;
+        let byte_offset = stop as usize - start as usize;
+        let len = match byte_offset.checked_div(stride) {
+            Some(len) => len,
+            // The #[distributed_slice] call checks `size_of::<T>() > 0` before
+            // using the unsafe `private_new`.
+            None => unsafe { hint::unreachable_unchecked() },
+        };
+        unsafe { slice::from_raw_parts(start, len) }
+    }
+}
+
+impl<T> Copy for DistributedSlice<[T]> {}
+
+impl<T> Clone for DistributedSlice<[T]> {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl<T: 'static> Deref for DistributedSlice<[T]> {
+    type Target = [T];
+    fn deref(&self) -> &'static Self::Target {
+        self.static_slice()
+    }
+}
+
+impl<T: 'static> IntoIterator for DistributedSlice<[T]> {
+    type Item = &'static T;
+    type IntoIter = slice::Iter<'static, T>;
+    fn into_iter(self) -> Self::IntoIter {
+        self.static_slice().iter()
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..d460938
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,133 @@
+//! [![github]](https://github.com/dtolnay/linkme)&ensp;[![crates-io]](https://crates.io/crates/linkme)&ensp;[![docs-rs]](https://docs.rs/linkme)
+//!
+//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
+//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
+//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
+//!
+//! <br>
+//!
+//! **A library for safe cross-platform linker shenanigans.**
+//!
+//! <br>
+//!
+//! # Platform support
+//!
+//! | Component | Linux | macOS | Windows | FreeBSD | illumos | Other...<sup>†</sup> |
+//! |:---|:---:|:---:|:---:|:---:|:---:|:---:|
+//! | Distributed slice | 💚 | 💚 | 💚 | 💚 | 💚 | |
+//!
+//! <br>***<sup>†</sup>*** We welcome PRs adding support for any platforms not
+//! listed here.
+//!
+//! <br>
+//!
+//! # Distributed slice
+//!
+//! A distributed slice is a collection of static elements that are gathered
+//! into a contiguous section of the binary by the linker. Slice elements may be
+//! defined individually from anywhere in the dependency graph of the final
+//! binary.
+//!
+//! Refer to [`linkme::DistributedSlice`][DistributedSlice] for complete details
+//! of the API. The basic idea is as follows.
+//!
+//! A static distributed slice is declared by writing `#[distributed_slice]` on
+//! a static item whose type is `[T]` for some type `T`. The initializer
+//! expression must be `[..]` to indicate that elements come from elsewhere.
+//!
+//! ```
+//! # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+//! #
+//! # struct Bencher;
+//! #
+//! use linkme::distributed_slice;
+//!
+//! #[distributed_slice]
+//! pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+//! ```
+//!
+//! Slice elements may be registered into a distributed slice by a
+//! `#[distributed_slice(...)]` attribute in which the path to the distributed
+//! slice is given in the parentheses. The initializer is required to be a const
+//! expression.
+//!
+//! ```
+//! # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+//! #
+//! # mod other_crate {
+//! #     use linkme::distributed_slice;
+//! #
+//! #     pub struct Bencher;
+//! #
+//! #     #[distributed_slice]
+//! #     pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+//! # }
+//! #
+//! # use other_crate::Bencher;
+//! #
+//! use linkme::distributed_slice;
+//! use other_crate::BENCHMARKS;
+//!
+//! #[distributed_slice(BENCHMARKS)]
+//! static BENCH_DESERIALIZE: fn(&mut Bencher) = bench_deserialize;
+//!
+//! fn bench_deserialize(b: &mut Bencher) {
+//!     /* ... */
+//! }
+//! ```
+//!
+//! The distributed slice behaves in all ways like `&'static [T]`.
+//!
+//! ```no_run
+//! # #![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+//! #
+//! # use linkme::distributed_slice;
+//! #
+//! # struct Bencher;
+//! #
+//! # #[distributed_slice]
+//! # static BENCHMARKS: [fn(&mut Bencher)] = [..];
+//! #
+//! fn main() {
+//!     // Iterate the elements.
+//!     for bench in BENCHMARKS {
+//!         /* ... */
+//!     }
+//!
+//!     // Index into the elements.
+//!     let first = BENCHMARKS[0];
+//!
+//!     // Slice the elements.
+//!     let except_first = &BENCHMARKS[1..];
+//!
+//!     // Invoke methods on the underlying slice.
+//!     let len = BENCHMARKS.len();
+//! }
+//! ```
+
+#![no_std]
+#![doc(html_root_url = "https://docs.rs/linkme/0.3.9")]
+#![allow(
+    clippy::doc_markdown,
+    clippy::empty_enum,
+    clippy::expl_impl_clone_on_copy,
+    clippy::manual_assert,
+    clippy::missing_panics_doc,
+    clippy::must_use_candidate,
+    clippy::unused_self
+)]
+
+// ANDROID: Use std to allow building as a dylib.
+#[cfg(android_dylib)]
+extern crate std;
+
+mod distributed_slice;
+
+// Not public API.
+#[doc(hidden)]
+#[path = "private.rs"]
+pub mod __private;
+
+pub use linkme_impl::*;
+
+pub use crate::distributed_slice::DistributedSlice;
diff --git a/src/private.rs b/src/private.rs
new file mode 100644
index 0000000..508ef4f
--- /dev/null
+++ b/src/private.rs
@@ -0,0 +1,17 @@
+pub use core::assert;
+pub use core::mem;
+pub use core::primitive::usize;
+
+pub trait Slice {
+    type Element;
+}
+
+impl<T> Slice for [T] {
+    type Element = T;
+}
+
+pub enum Void {}
+
+pub fn value<T>() -> T {
+    panic!()
+}
diff --git a/tests/compiletest.rs b/tests/compiletest.rs
new file mode 100644
index 0000000..7974a62
--- /dev/null
+++ b/tests/compiletest.rs
@@ -0,0 +1,7 @@
+#[rustversion::attr(not(nightly), ignore)]
+#[cfg_attr(miri, ignore)]
+#[test]
+fn ui() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/ui/*.rs");
+}
diff --git a/tests/custom_linkme_path.rs b/tests/custom_linkme_path.rs
new file mode 100644
index 0000000..daee74f
--- /dev/null
+++ b/tests/custom_linkme_path.rs
@@ -0,0 +1,37 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme as link_me;
+
+mod declaration {
+    use crate::link_me::distributed_slice;
+
+    #[distributed_slice]
+    #[linkme(crate = crate::link_me)]
+    pub static SLICE: [i32] = [..];
+
+    #[test]
+    fn test_slice() {
+        assert!(!SLICE.is_empty());
+    }
+
+    #[distributed_slice]
+    #[linkme(crate = crate::link_me)]
+    pub static FUNCTIONS: [fn()] = [..];
+
+    #[test]
+    fn test_functions() {
+        assert!(!FUNCTIONS.is_empty());
+    }
+}
+
+mod usage {
+    use crate::link_me::distributed_slice;
+
+    #[distributed_slice(super::declaration::SLICE)]
+    #[linkme(crate = crate::link_me)]
+    pub static N: i32 = 9;
+
+    #[distributed_slice(super::declaration::FUNCTIONS)]
+    #[linkme(crate = crate::link_me)]
+    fn test_me() {}
+}
diff --git a/tests/distributed_slice.rs b/tests/distributed_slice.rs
new file mode 100644
index 0000000..f8ab487
--- /dev/null
+++ b/tests/distributed_slice.rs
@@ -0,0 +1,72 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+use once_cell::sync::Lazy;
+
+#[distributed_slice]
+static SHENANIGANS: [i32] = [..];
+
+#[distributed_slice(SHENANIGANS)]
+static N: i32 = 9;
+
+#[distributed_slice(SHENANIGANS)]
+static NN: i32 = 99;
+
+#[distributed_slice(SHENANIGANS)]
+static NNN: i32 = 999;
+
+#[test]
+fn test() {
+    assert_eq!(SHENANIGANS.len(), 3);
+
+    let mut sum = 0;
+    for n in SHENANIGANS {
+        sum += n;
+    }
+
+    assert_eq!(sum, 9 + 99 + 999);
+}
+
+#[test]
+fn test_empty() {
+    #[distributed_slice]
+    static EMPTY: [i32] = [..];
+
+    assert!(EMPTY.is_empty());
+}
+
+#[test]
+fn test_non_copy() {
+    struct NonCopy(i32);
+
+    #[distributed_slice]
+    static NONCOPY: [NonCopy] = [..];
+
+    #[distributed_slice(NONCOPY)]
+    static ELEMENT: NonCopy = NonCopy(9);
+
+    assert!(!NONCOPY.is_empty());
+}
+
+#[test]
+fn test_interior_mutable() {
+    #[distributed_slice]
+    static MUTABLE: [Lazy<i32>] = [..];
+
+    #[distributed_slice(MUTABLE)]
+    static ELEMENT: Lazy<i32> = Lazy::new(|| -1);
+
+    assert!(MUTABLE.len() == 1);
+    assert!(*MUTABLE[0] == -1);
+}
+
+#[test]
+fn test_elided_lifetime() {
+    #[distributed_slice]
+    pub static MYSLICE: [&str] = [..];
+
+    #[distributed_slice(MYSLICE)]
+    static ELEMENT: &str = "...";
+
+    assert!(!MYSLICE.is_empty());
+}
diff --git a/tests/example.rs b/tests/example.rs
new file mode 100644
index 0000000..bbe439b
--- /dev/null
+++ b/tests/example.rs
@@ -0,0 +1,32 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+#![deny(warnings)]
+#![allow(clippy::no_effect_underscore_binding)]
+
+use linkme::distributed_slice;
+
+pub struct Bencher;
+
+#[distributed_slice]
+pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+
+#[distributed_slice(BENCHMARKS)]
+static BENCH_DESERIALIZE: fn(&mut Bencher) = bench_deserialize;
+
+fn bench_deserialize(_b: &mut Bencher) {
+    /* ... */
+}
+
+#[test]
+fn readme() {
+    // Iterate the elements.
+    for _bench in BENCHMARKS { /* ... */ }
+
+    // Index into the elements.
+    let _first = BENCHMARKS[0];
+
+    // Slice the elements.
+    let _except_first = &BENCHMARKS[1..];
+
+    // Invoke methods on the underlying slice.
+    let _len = BENCHMARKS.len();
+}
diff --git a/tests/fn_element.rs b/tests/fn_element.rs
new file mode 100644
index 0000000..a80508f
--- /dev/null
+++ b/tests/fn_element.rs
@@ -0,0 +1,31 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+#![allow(clippy::needless_lifetimes, clippy::trivially_copy_pass_by_ref)]
+
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static SLICE1: [fn()] = [..];
+
+#[distributed_slice(SLICE1)]
+fn foo() {}
+
+#[distributed_slice]
+pub static SLICE2: [for<'a, 'b> fn(&'a &'b ())] = [..];
+
+#[distributed_slice(SLICE2)]
+fn bar<'a, 'b>(_: &'a &'b ()) {}
+
+#[distributed_slice]
+pub static SLICE3: [unsafe extern "C" fn() -> i32] = [..];
+
+#[distributed_slice(SLICE3)]
+unsafe extern "C" fn baz() -> i32 {
+    42
+}
+
+#[test]
+fn test_slices() {
+    assert!(!SLICE1.is_empty());
+    assert!(!SLICE2.is_empty());
+    assert!(!SLICE3.is_empty());
+}
diff --git a/tests/module/mod.rs b/tests/module/mod.rs
new file mode 100644
index 0000000..0fe3e5b
--- /dev/null
+++ b/tests/module/mod.rs
@@ -0,0 +1,18 @@
+mod declaration {
+    use linkme::distributed_slice;
+
+    #[distributed_slice]
+    pub static SLICE: [i32] = [..];
+
+    #[test]
+    fn test_mod_slice() {
+        assert!(!SLICE.is_empty());
+    }
+}
+
+mod usage {
+    use linkme::distributed_slice;
+
+    #[distributed_slice(super::declaration::SLICE)]
+    pub static N: i32 = 9;
+}
diff --git a/tests/module_2015.rs b/tests/module_2015.rs
new file mode 100644
index 0000000..1a5d049
--- /dev/null
+++ b/tests/module_2015.rs
@@ -0,0 +1,5 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+extern crate linkme;
+
+include!("module/mod.rs");
diff --git a/tests/module_2021.rs b/tests/module_2021.rs
new file mode 100644
index 0000000..b7f1e0a
--- /dev/null
+++ b/tests/module_2021.rs
@@ -0,0 +1,3 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+include!("module/mod.rs");
diff --git a/tests/ui/bad_crate_path.rs b/tests/ui/bad_crate_path.rs
new file mode 100644
index 0000000..ce2e563
--- /dev/null
+++ b/tests/ui/bad_crate_path.rs
@@ -0,0 +1,20 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+mod path {
+    pub mod to {}
+}
+
+#[distributed_slice]
+#[linkme(crate = path::to::missing)]
+pub static SLICE1: [&'static str] = [..];
+
+#[distributed_slice]
+pub static SLICE2: [&'static str] = [..];
+
+#[distributed_slice(SLICE2)]
+#[linkme(crate = path::to::missing)]
+static ELEMENT: &str = "";
+
+fn main() {}
diff --git a/tests/ui/bad_crate_path.stderr b/tests/ui/bad_crate_path.stderr
new file mode 100644
index 0000000..5ac1d6a
--- /dev/null
+++ b/tests/ui/bad_crate_path.stderr
@@ -0,0 +1,33 @@
+error[E0433]: failed to resolve: could not find `missing` in `to`
+  --> tests/ui/bad_crate_path.rs:10:28
+   |
+10 | #[linkme(crate = path::to::missing)]
+   |                            ^^^^^^^ could not find `missing` in `to`
+
+error[E0433]: failed to resolve: could not find `missing` in `to`
+  --> tests/ui/bad_crate_path.rs:17:28
+   |
+17 | #[linkme(crate = path::to::missing)]
+   |                            ^^^^^^^ could not find `missing` in `to`
+
+error[E0433]: failed to resolve: could not find `missing` in `to`
+  --> tests/ui/bad_crate_path.rs:10:28
+   |
+10 | #[linkme(crate = path::to::missing)]
+   |                            ^^^^^^^ could not find `missing` in `to`
+   |
+help: consider importing this struct
+   |
+3  | use linkme::DistributedSlice;
+   |
+
+error[E0433]: failed to resolve: could not find `missing` in `to`
+  --> tests/ui/bad_crate_path.rs:17:28
+   |
+17 | #[linkme(crate = path::to::missing)]
+   |                            ^^^^^^^ could not find `missing` in `to`
+   |
+help: consider importing this struct
+   |
+3  | use linkme::DistributedSlice;
+   |
diff --git a/tests/ui/generic_fn.rs b/tests/ui/generic_fn.rs
new file mode 100644
index 0000000..cb9be03
--- /dev/null
+++ b/tests/ui/generic_fn.rs
@@ -0,0 +1,14 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static SLICES: [fn()] = [..];
+
+#[distributed_slice(SLICES)]
+fn type_param<T>() {}
+
+#[distributed_slice(SLICES)]
+fn const_param<const N: usize>() {}
+
+fn main() {}
diff --git a/tests/ui/generic_fn.stderr b/tests/ui/generic_fn.stderr
new file mode 100644
index 0000000..2730c8d
--- /dev/null
+++ b/tests/ui/generic_fn.stderr
@@ -0,0 +1,11 @@
+error: cannot have generic parameters on distributed slice element
+ --> tests/ui/generic_fn.rs:9:15
+  |
+9 | fn type_param<T>() {}
+  |               ^
+
+error: cannot have generic parameters on distributed slice element
+  --> tests/ui/generic_fn.rs:12:16
+   |
+12 | fn const_param<const N: usize>() {}
+   |                ^^^^^^^^^^^^^^
diff --git a/tests/ui/mismatched_types.rs b/tests/ui/mismatched_types.rs
new file mode 100644
index 0000000..611c8a9
--- /dev/null
+++ b/tests/ui/mismatched_types.rs
@@ -0,0 +1,16 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+pub struct Bencher;
+
+#[distributed_slice]
+pub static BENCHMARKS: [fn(&mut Bencher)] = [..];
+
+#[distributed_slice(BENCHMARKS)]
+static BENCH_WTF: usize = 999;
+
+#[distributed_slice(BENCHMARKS)]
+fn wrong_bench_fn<'a>(_: &'a mut ()) {}
+
+fn main() {}
diff --git a/tests/ui/mismatched_types.stderr b/tests/ui/mismatched_types.stderr
new file mode 100644
index 0000000..643d1a1
--- /dev/null
+++ b/tests/ui/mismatched_types.stderr
@@ -0,0 +1,31 @@
+error[E0308]: mismatched types
+  --> tests/ui/mismatched_types.rs:11:19
+   |
+10 | #[distributed_slice(BENCHMARKS)]
+   | -------------------------------- arguments to this function are incorrect
+11 | static BENCH_WTF: usize = 999;
+   |                   ^^^^^ expected fn pointer, found `usize`
+   |
+   = note: expected fn pointer `for<'a> fn(&'a mut Bencher)`
+                    found type `usize`
+note: method defined here
+  --> src/distributed_slice.rs
+   |
+   |     pub unsafe fn private_typecheck(self, element: T) {
+   |                   ^^^^^^^^^^^^^^^^^
+
+error[E0308]: mismatched types
+  --> tests/ui/mismatched_types.rs:14:1
+   |
+13 | #[distributed_slice(BENCHMARKS)]
+   | -------------------------------- arguments to this function are incorrect
+14 | fn wrong_bench_fn<'a>(_: &'a mut ()) {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Bencher`, found `()`
+   |
+   = note: expected fn pointer `for<'a> fn(&'a mut Bencher)`
+              found fn pointer `for<'a> fn(&'a mut ())`
+note: method defined here
+  --> src/distributed_slice.rs
+   |
+   |     pub unsafe fn private_typecheck(self, element: T) {
+   |                   ^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/mutable.rs b/tests/ui/mutable.rs
new file mode 100644
index 0000000..39db0d0
--- /dev/null
+++ b/tests/ui/mutable.rs
@@ -0,0 +1,11 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static mut SLICE: [i32] = [..];
+
+#[distributed_slice(BENCHMARKS)]
+static mut ELEMENT: i32 = -1;
+
+fn main() {}
diff --git a/tests/ui/mutable.stderr b/tests/ui/mutable.stderr
new file mode 100644
index 0000000..c23e194
--- /dev/null
+++ b/tests/ui/mutable.stderr
@@ -0,0 +1,11 @@
+error: static mut is not supported by distributed_slice
+ --> tests/ui/mutable.rs:6:12
+  |
+6 | pub static mut SLICE: [i32] = [..];
+  |            ^^^
+
+error: static mut is not supported by distributed_slice
+ --> tests/ui/mutable.rs:9:8
+  |
+9 | static mut ELEMENT: i32 = -1;
+  |        ^^^
diff --git a/tests/ui/unsupported_item.rs b/tests/ui/unsupported_item.rs
new file mode 100644
index 0000000..e218ce5
--- /dev/null
+++ b/tests/ui/unsupported_item.rs
@@ -0,0 +1,11 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+#[distributed_slice]
+pub static SLICE: [&'static str] = [..];
+
+#[distributed_slice(SLICE)]
+extern crate std as _std;
+
+fn main() {}
diff --git a/tests/ui/unsupported_item.stderr b/tests/ui/unsupported_item.stderr
new file mode 100644
index 0000000..b0eae07
--- /dev/null
+++ b/tests/ui/unsupported_item.stderr
@@ -0,0 +1,5 @@
+error: distributed element must be either static or function item
+ --> tests/ui/unsupported_item.rs:9:1
+  |
+9 | extern crate std as _std;
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/zerosized.rs b/tests/ui/zerosized.rs
new file mode 100644
index 0000000..3965cee
--- /dev/null
+++ b/tests/ui/zerosized.rs
@@ -0,0 +1,10 @@
+#![cfg_attr(feature = "used_linker", feature(used_with_arg))]
+
+use linkme::distributed_slice;
+
+pub struct Unit;
+
+#[distributed_slice]
+pub static ZEROSIZED: [Unit] = [..];
+
+fn main() {}
diff --git a/tests/ui/zerosized.stderr b/tests/ui/zerosized.stderr
new file mode 100644
index 0000000..2443140
--- /dev/null
+++ b/tests/ui/zerosized.stderr
@@ -0,0 +1,7 @@
+error[E0080]: could not evaluate static initializer
+ --> tests/ui/zerosized.rs:7:1
+  |
+7 | #[distributed_slice]
+  | ^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'assertion failed: ::linkme::__private::mem::size_of::<<[Unit] as\n            ::linkme::__private::Slice>::Element>() > 0', $DIR/tests/ui/zerosized.rs:7:1
+  |
+  = note: this error originates in the macro `::linkme::__private::assert` (in Nightly builds, run with -Z macro-backtrace for more info)