42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
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// check-fail
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#![feature(core_intrinsics)]
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#![feature(const_intrinsic_compare_bytes)]
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use std::intrinsics::compare_bytes;
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use std::mem::MaybeUninit;
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fn main() {
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const LHS_NULL: i32 = unsafe {
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compare_bytes(0 as *const u8, 2 as *const u8, 0)
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//~^ ERROR evaluation of constant value failed
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};
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const RHS_NULL: i32 = unsafe {
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compare_bytes(1 as *const u8, 0 as *const u8, 0)
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//~^ ERROR evaluation of constant value failed
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};
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const DANGLING_PTR_NON_ZERO_LENGTH: i32 = unsafe {
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compare_bytes(1 as *const u8, 2 as *const u8, 1)
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//~^ ERROR evaluation of constant value failed
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};
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const LHS_OUT_OF_BOUNDS: i32 = unsafe {
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compare_bytes([1, 2, 3].as_ptr(), [1, 2, 3, 4].as_ptr(), 4)
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//~^ ERROR evaluation of constant value failed
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};
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const RHS_OUT_OF_BOUNDS: i32 = unsafe {
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compare_bytes([1, 2, 3, 4].as_ptr(), [1, 2, 3].as_ptr(), 4)
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//~^ ERROR evaluation of constant value failed
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};
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const LHS_UNINIT: i32 = unsafe {
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compare_bytes(MaybeUninit::uninit().as_ptr(), [1].as_ptr(), 1)
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//~^ ERROR evaluation of constant value failed
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};
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const RHS_UNINIT: i32 = unsafe {
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compare_bytes([1].as_ptr(), MaybeUninit::uninit().as_ptr(), 1)
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//~^ ERROR evaluation of constant value failed
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};
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const WITH_PROVENANCE: i32 = unsafe {
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compare_bytes([&1].as_ptr().cast(), [&2].as_ptr().cast(), std::mem::size_of::<usize>())
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//~^ ERROR evaluation of constant value failed
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};
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}
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