35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
#![allow(dead_code)]
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#![warn(clippy::transmuting_null)]
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#![allow(clippy::zero_ptr)]
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#![allow(clippy::transmute_ptr_to_ref)]
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#![allow(clippy::eq_op, clippy::missing_transmute_annotations)]
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// Easy to lint because these only span one line.
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fn one_liners() {
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unsafe {
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let _: &u64 = std::mem::transmute(0 as *const u64);
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//~^ ERROR: transmuting a known null pointer into a reference
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//~| NOTE: `-D clippy::transmuting-null` implied by `-D warnings`
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let _: &u64 = std::mem::transmute(std::ptr::null::<u64>());
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//~^ ERROR: transmuting a known null pointer into a reference
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}
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}
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pub const ZPTR: *const usize = 0 as *const _;
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pub const NOT_ZPTR: *const usize = 1 as *const _;
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fn transmute_const() {
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unsafe {
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// Should raise a lint.
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let _: &u64 = std::mem::transmute(ZPTR);
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//~^ ERROR: transmuting a known null pointer into a reference
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// Should NOT raise a lint.
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let _: &u64 = std::mem::transmute(NOT_ZPTR);
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}
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}
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fn main() {
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one_liners();
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transmute_const();
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}
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