mirror of https://github.com/rust-lang/rust
108 lines
3.1 KiB
Rust
108 lines
3.1 KiB
Rust
#![feature(transmute_generic_consts)]
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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fn foo<const W: usize, const H: usize>(v: [[u32; H + 1]; W]) -> [[u32; W + 1]; H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR cannot transmute
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}
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}
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fn bar<const W: bool, const H: usize>(v: [[u32; H]; W]) -> [[u32; W]; H] {
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//~^ ERROR: the constant `W` is not of type `usize`
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: the constant `W` is not of type `usize`
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}
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}
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fn baz<const W: usize, const H: usize>(v: [[u32; H]; W]) -> [u32; W * H * H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR cannot transmute
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}
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}
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fn overflow(v: [[[u32; 8888888]; 9999999]; 777777777]) -> [[[u32; 9999999]; 777777777]; 8888888] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR cannot transmute
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}
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}
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fn transpose<const W: usize, const H: usize>(v: [[u32; H]; W]) -> [[u32; W]; H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn ident<const W: usize, const H: usize>(v: [[u32; H]; W]) -> [[u32; H]; W] {
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unsafe { std::mem::transmute(v) }
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}
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fn flatten<const W: usize, const H: usize>(v: [[u32; H]; W]) -> [u32; W * H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn coagulate<const W: usize, const H: usize>(v: [u32; H * W]) -> [[u32; W]; H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn flatten_3d<const W: usize, const H: usize, const D: usize>(
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v: [[[u32; D]; H]; W],
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) -> [u32; D * W * H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn flatten_somewhat<const W: usize, const H: usize, const D: usize>(
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v: [[[u32; D]; H]; W],
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) -> [[u32; D * W]; H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn known_size<const L: usize>(v: [u16; L]) -> [u8; L * 2] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn condense_bytes<const L: usize>(v: [u8; L * 2]) -> [u16; L] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn singleton_each<const L: usize>(v: [u8; L]) -> [[u8; 1]; L] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn transpose_with_const<const W: usize, const H: usize>(
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v: [[u32; 2 * H]; W + W],
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) -> [[u32; W + W]; 2 * H] {
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unsafe {
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std::mem::transmute(v)
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//~^ ERROR: cannot transmute between types of different sizes, or dependently-sized types
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}
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}
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fn main() {}
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