39 lines
852 B
Rust
Executable File
39 lines
852 B
Rust
Executable File
#![feature(custom_attribute)]
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#![allow(dead_code, unused_attributes)]
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#[miri_run]
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fn overwriting_part_of_relocation_makes_the_rest_undefined() -> i32 {
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let mut p = &42;
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unsafe {
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let ptr: *mut _ = &mut p;
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*(ptr as *mut u32) = 123;
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}
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*p
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}
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#[miri_run]
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fn pointers_to_different_allocations_are_unorderable() -> bool {
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let x: *const u8 = &1;
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let y: *const u8 = &2;
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x < y
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}
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#[miri_run]
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fn invalid_bools_are_rejected() -> u8 {
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let b = unsafe { std::mem::transmute::<u8, bool>(2) };
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if b { 1 } else { 2 }
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}
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#[miri_run]
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fn undefined_byte_reads_are_rejected() -> u8 {
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let v: Vec<u8> = Vec::with_capacity(10);
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let undef = unsafe { *v.get_unchecked(5) };
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undef + 1
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}
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#[miri_run]
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fn out_of_bounds_reads_are_rejected() -> u8 {
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let v: Vec<u8> = vec![1, 2];
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unsafe { *v.get_unchecked(5) }
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}
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