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[0.2] Document the MSRV of the stable channel as 1.63 #4040

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Nov 16, 2024
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[0.2] Document the MSRV of the stable channel as 1.63 #4040

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22 changes: 7 additions & 15 deletions README.md
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Expand Up @@ -55,21 +55,13 @@ libc = "0.2"

## Rust version support

The minimum supported Rust toolchain version is currently **Rust 1.13.0**. (libc
does not currently have any policy regarding changes to the minimum supported
Rust version; such policy is a work in progress.) APIs requiring newer Rust
features are only available on newer Rust toolchains:

| Feature | Version |
| -------------------- | ------- |
| `union` | 1.19.0 |
| `const mem::size_of` | 1.24.0 |
| `repr(align)` | 1.25.0 |
| `extra_traits` | 1.25.0 |
| `core::ffi::c_void` | 1.30.0 |
| `repr(packed(N))` | 1.33.0 |
| `cfg(target_vendor)` | 1.33.0 |
| `const-extern-fn` | 1.62.0 |
The minimum supported Rust toolchain version is currently **Rust 1.63**.

Increases to the MSRV are allowed to change without a major (i.e. semver-
breaking) release in order to avoid a ripple effect in the ecosystem.

`libc` may continue to compile with Rust versions older than the current MSRV
but this is not guaranteed.

## Platform support

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