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[rust.git] / tests / ui / transmute.rs

diff --git a/tests/ui/transmute.rs b/tests/ui/transmute.rs
index 3ff444b386561527008b5c3ccfabfa9310e446a5..bb853d237047fbc33f6bd85b50c04ad8f2e5edf2 100644 (file)
--- a/tests/ui/transmute.rs
+++ b/tests/ui/transmute.rs
@@ -1,6 +1,3 @@
-
-
-
 #![allow(dead_code)]
 
 extern crate core;
@@ -16,8 +13,8 @@ fn my_vec() -> MyVec<i32> {
     vec![]
 }
 
-#[allow(needless_lifetimes, transmute_ptr_to_ptr)]
-#[warn(useless_transmute)]
+#[allow(clippy::needless_lifetimes, clippy::transmute_ptr_to_ptr)]
+#[warn(clippy::useless_transmute)]
 unsafe fn _generic<'a, T, U: 'a>(t: &'a T) {
     let _: &'a T = core::intrinsics::transmute(t);
 
@@ -30,47 +27,7 @@ unsafe fn _generic<'a, T, U: 'a>(t: &'a T) {
     let _: *const U = core::intrinsics::transmute(t);
 }
 
-#[warn(transmute_ptr_to_ref)]
-unsafe fn _ptr_to_ref<T, U>(p: *const T, m: *mut T, o: *const U, om: *mut U) {
-    let _: &T = std::mem::transmute(p);
-    let _: &T = &*p;
-
-    let _: &mut T = std::mem::transmute(m);
-    let _: &mut T = &mut *m;
-
-    let _: &T = std::mem::transmute(m);
-    let _: &T = &*m;
-
-    let _: &mut T = std::mem::transmute(p as *mut T);
-    let _ = &mut *(p as *mut T);
-
-    let _: &T = std::mem::transmute(o);
-    let _: &T = &*(o as *const T);
-
-    let _: &mut T = std::mem::transmute(om);
-    let _: &mut T = &mut *(om as *mut T);
-
-    let _: &T = std::mem::transmute(om);
-    let _: &T = &*(om as *const T);
-}
-
-#[warn(transmute_ptr_to_ref)]
-fn issue1231() {
-    struct Foo<'a, T: 'a> {
-        bar: &'a T,
-    }
-
-    let raw = 42 as *const i32;
-    let _: &Foo<u8> = unsafe { std::mem::transmute::<_, &Foo<_>>(raw) };
-
-    let _: &Foo<&u8> = unsafe { std::mem::transmute::<_, &Foo<&_>>(raw) };
-
-    type Bar<'a> = &'a u8;
-    let raw = 42 as *const i32;
-    unsafe { std::mem::transmute::<_, Bar>(raw) };
-}
-
-#[warn(useless_transmute)]
+#[warn(clippy::useless_transmute)]
 fn useless() {
     unsafe {
         let _: Vec<i32> = core::intrinsics::transmute(my_vec());
@@ -83,25 +40,19 @@ fn useless() {
 
         let _: Vec<i32> = my_transmute(my_vec());
 
-        let _: Vec<u32> = core::intrinsics::transmute(my_vec());
-        let _: Vec<u32> = core::mem::transmute(my_vec());
-        let _: Vec<u32> = std::intrinsics::transmute(my_vec());
-        let _: Vec<u32> = std::mem::transmute(my_vec());
-        let _: Vec<u32> = my_transmute(my_vec());
-
         let _: *const usize = std::mem::transmute(5_isize);
 
-        let _  = 5_isize as *const usize;
+        let _ = 5_isize as *const usize;
 
-        let _: *const usize = std::mem::transmute(1+1usize);
+        let _: *const usize = std::mem::transmute(1 + 1usize);
 
-        let _  = (1+1_usize) as *const usize;
+        let _ = (1 + 1_usize) as *const usize;
     }
 }
 
 struct Usize(usize);
 
-#[warn(crosspointer_transmute)]
+#[warn(clippy::crosspointer_transmute)]
 fn crosspointer() {
     let mut int: Usize = Usize(0);
     let int_const_ptr: *const Usize = &int as *const Usize;
@@ -118,18 +69,18 @@ fn crosspointer() {
     }
 }
 
-#[warn(transmute_int_to_char)]
+#[warn(clippy::transmute_int_to_char)]
 fn int_to_char() {
     let _: char = unsafe { std::mem::transmute(0_u32) };
     let _: char = unsafe { std::mem::transmute(0_i32) };
 }
 
-#[warn(transmute_int_to_bool)]
+#[warn(clippy::transmute_int_to_bool)]
 fn int_to_bool() {
     let _: bool = unsafe { std::mem::transmute(0_u8) };
 }
 
-#[warn(transmute_int_to_float)]
+#[warn(clippy::transmute_int_to_float)]
 fn int_to_float() {
     let _: f32 = unsafe { std::mem::transmute(0_u32) };
     let _: f32 = unsafe { std::mem::transmute(0_i32) };
@@ -140,30 +91,4 @@ fn bytes_to_str(b: &[u8], mb: &mut [u8]) {
     let _: &mut str = unsafe { std::mem::transmute(mb) };
 }
 
-#[warn(misaligned_transmute)]
-fn misaligned_transmute() {
-    let _: u32 = unsafe { std::mem::transmute([0u8; 4]) }; // err
-    let _: u32 = unsafe { std::mem::transmute(0f32) }; // ok (alignment-wise)
-    let _: [u8; 4] = unsafe { std::mem::transmute(0u32) }; // ok (alignment-wise)
-}
-
-#[warn(transmute_ptr_to_ptr)]
-fn transmute_ptr_to_ptr() {
-    let ptr = &1u32 as *const u32;
-    let mut_ptr = &mut 1u32 as *mut u32;
-    unsafe {
-        // pointer-to-pointer transmutes; bad
-        let _: *const f32 = std::mem::transmute(ptr);
-        let _: *mut f32 = std::mem::transmute(mut_ptr);
-        // ref-ref transmutes; bad
-        let _: &f32 = std::mem::transmute(&1u32);
-        let _: &mut f32 = std::mem::transmute(&mut 1u32);
-    }
-    // These should be fine
-    let _ = ptr as *const f32;
-    let _ = mut_ptr as *mut f32;
-    let _ = unsafe { &*(&1u32 as *const u32 as *const f32) };
-    let _ = unsafe { &mut *(&mut 1u32 as *mut u32 as *mut f32) };
-}
-
-fn main() { }
+fn main() {}