mirror of https://github.com/rust-lang/rust
39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
// test the deref_nullptr lint
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#![deny(deref_nullptr)]
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use std::ptr;
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struct Struct {
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field: u8,
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}
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fn f() {
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unsafe {
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let a = 1;
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let ub = *(a as *const i32);
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let ub = *(0 as *const i32);
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//~^ ERROR dereferencing a null pointer
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let ub = *ptr::null::<i32>();
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//~^ ERROR dereferencing a null pointer
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let ub = *ptr::null_mut::<i32>();
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//~^ ERROR dereferencing a null pointer
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let ub = *(ptr::null::<i16>() as *const i32);
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//~^ ERROR dereferencing a null pointer
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let ub = *(ptr::null::<i16>() as *mut i32 as *mut usize as *const u8);
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//~^ ERROR dereferencing a null pointer
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let ub = &*ptr::null::<i32>();
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//~^ ERROR dereferencing a null pointer
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let ub = &*ptr::null_mut::<i32>();
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//~^ ERROR dereferencing a null pointer
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ptr::addr_of!(*ptr::null::<i32>());
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//~^ ERROR dereferencing a null pointer
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ptr::addr_of_mut!(*ptr::null_mut::<i32>());
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//~^ ERROR dereferencing a null pointer
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let offset = ptr::addr_of!((*ptr::null::<Struct>()).field);
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//~^ ERROR dereferencing a null pointer
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}
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}
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fn main() {}
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