33 lines
1.4 KiB
Rust
33 lines
1.4 KiB
Rust
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// test the deref_nullptr lint
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#![deny(deref_nullptr)]
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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 causes undefined behavior
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let ub = *core::ptr::null::<i32>();
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = *core::ptr::null_mut::<i32>();
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = *(core::ptr::null::<i16>() as *const i32);
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = *(core::ptr::null::<i16>() as *mut i32 as *mut usize as *const u8);
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = &*core::ptr::null::<i32>();
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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core::ptr::addr_of!(*core::ptr::null::<i32>());
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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std::ptr::addr_of_mut!(*core::ptr::null_mut::<i32>());
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = *std::ptr::null::<i32>();
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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let ub = *std::ptr::null_mut::<i32>();
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//~^ ERROR Dereferencing a null pointer causes undefined behavior
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}
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}
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fn main() {}
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