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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/libc/src/fixed_width_ints.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/libc/src/fixed_width_ints.rs')
-rw-r--r--vendor/libc/src/fixed_width_ints.rs99
1 files changed, 0 insertions, 99 deletions
diff --git a/vendor/libc/src/fixed_width_ints.rs b/vendor/libc/src/fixed_width_ints.rs
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--- a/vendor/libc/src/fixed_width_ints.rs
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@@ -1,99 +0,0 @@
-//! This module contains type aliases for C's fixed-width integer types .
-//!
-//! These aliases are deprecated: use the Rust types instead.
-
-#[deprecated(since = "0.2.55", note = "Use i8 instead.")]
-pub type int8_t = i8;
-#[deprecated(since = "0.2.55", note = "Use i16 instead.")]
-pub type int16_t = i16;
-#[deprecated(since = "0.2.55", note = "Use i32 instead.")]
-pub type int32_t = i32;
-#[deprecated(since = "0.2.55", note = "Use i64 instead.")]
-pub type int64_t = i64;
-#[deprecated(since = "0.2.55", note = "Use u8 instead.")]
-pub type uint8_t = u8;
-#[deprecated(since = "0.2.55", note = "Use u16 instead.")]
-pub type uint16_t = u16;
-#[deprecated(since = "0.2.55", note = "Use u32 instead.")]
-pub type uint32_t = u32;
-#[deprecated(since = "0.2.55", note = "Use u64 instead.")]
-pub type uint64_t = u64;
-
-cfg_if! {
- if #[cfg(all(libc_int128, target_arch = "aarch64", not(target_os = "windows")))] {
- // This introduces partial support for FFI with __int128 and
- // equivalent types on platforms where Rust's definition is validated
- // to match the standard C ABI of that platform.
- //
- // Rust does not guarantee u128/i128 are sound for FFI, and its
- // definitions are in fact known to be incompatible. [0]
- //
- // However these problems aren't fundamental, and are just platform
- // inconsistencies. Specifically at the time of this writing:
- //
- // * For x64 SysV ABIs (everything but Windows), the types are underaligned.
- // * For all Windows ABIs, Microsoft doesn't actually officially define __int128,
- // and as a result different implementations don't actually agree on its ABI.
- //
- // But on the other major aarch64 platforms (android, linux, ios, macos) we have
- // validated that rustc has the right ABI for these types. This is important because
- // aarch64 uses these types in some fundamental OS types like user_fpsimd_struct,
- // which represents saved simd registers.
- //
- // Any API which uses these types will need to `#[ignore(improper_ctypes)]`
- // until the upstream rust issue is resolved, but this at least lets us make
- // progress on platforms where this type is important.
- //
- // The list of supported architectures and OSes is intentionally very restricted,
- // as careful work needs to be done to verify that a particular platform
- // has a conformant ABI.
- //
- // [0]: https://github.com/rust-lang/rust/issues/54341
-
- /// C `__int128` (a GCC extension that's part of many ABIs)
- pub type __int128 = i128;
- /// C `unsigned __int128` (a GCC extension that's part of many ABIs)
- pub type __uint128 = u128;
- /// C __int128_t (alternate name for [__int128][])
- pub type __int128_t = i128;
- /// C __uint128_t (alternate name for [__uint128][])
- pub type __uint128_t = u128;
-
- cfg_if! {
- if #[cfg(libc_underscore_const_names)] {
- macro_rules! static_assert_eq {
- ($a:expr, $b:expr) => {
- const _: [(); $a] = [(); $b];
- };
- }
-
- // NOTE: if you add more platforms to here, you may need to cfg
- // these consts. They should always match the platform's values
- // for `sizeof(__int128)` and `_Alignof(__int128)`.
- const _SIZE_128: usize = 16;
- const _ALIGN_128: usize = 16;
-
- // Since Rust doesn't officially guarantee that these types
- // have compatible ABIs, we const assert that these values have the
- // known size/align of the target platform's libc. If rustc ever
- // tries to regress things, it will cause a compilation error.
- //
- // This isn't a bullet-proof solution because e.g. it doesn't
- // catch the fact that llvm and gcc disagree on how x64 __int128
- // is actually *passed* on the stack (clang underaligns it for
- // the same reason that rustc *never* properly aligns it).
- static_assert_eq!(core::mem::size_of::<__int128>(), _SIZE_128);
- static_assert_eq!(core::mem::align_of::<__int128>(), _ALIGN_128);
-
- static_assert_eq!(core::mem::size_of::<__uint128>(), _SIZE_128);
- static_assert_eq!(core::mem::align_of::<__uint128>(), _ALIGN_128);
-
- static_assert_eq!(core::mem::size_of::<__int128_t>(), _SIZE_128);
- static_assert_eq!(core::mem::align_of::<__int128_t>(), _ALIGN_128);
-
- static_assert_eq!(core::mem::size_of::<__uint128_t>(), _SIZE_128);
- static_assert_eq!(core::mem::align_of::<__uint128_t>(), _ALIGN_128);
- }
- }
- }
-}