80 lines
1.8 KiB
Rust
80 lines
1.8 KiB
Rust
//@aux-build:macro_rules.rs
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#![warn(clippy::missing_transmute_annotations)]
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#[macro_use]
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extern crate macro_rules;
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macro_rules! local_bad_transmute {
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($e:expr) => {
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std::mem::transmute($e)
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};
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}
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fn bar(x: i32) -> i32 {
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x
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}
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unsafe fn foo1() -> i32 {
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std::mem::transmute([1u16, 2u16])
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo2() -> i32 {
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std::mem::transmute::<_, _>([1u16, 2u16])
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo3() -> i32 {
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std::mem::transmute::<_, i32>([1u16, 2u16])
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo4() -> i32 {
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std::mem::transmute::<[u16; 2], _>([1u16, 2u16])
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo5() -> i32 {
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let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16]));
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//~^ ERROR: transmute used without annotations
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bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16]))
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo6() -> i32 {
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local_bad_transmute!([1u16, 2u16])
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo7() -> i32 {
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// Should not warn.
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bad_transmute!([1u16, 2u16])
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}
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#[repr(i32)]
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enum Foo {
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A = 0,
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}
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unsafe fn foo8() -> Foo {
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std::mem::transmute(0i32)
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//~^ ERROR: transmute used without annotations
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}
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unsafe fn foo9() -> i32 {
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std::mem::transmute(Foo::A)
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//~^ ERROR: transmute used without annotations
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}
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fn main() {
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unsafe {
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// Should not warn.
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std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]);
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let x = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]);
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let x: i32 = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]);
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let x: i32 = std::mem::transmute::<_, i32>([1u16, 2u16]);
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let x: i32 = std::mem::transmute([1u16, 2u16]);
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}
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}
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