Merging upstream version 1.72.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/tools/clippy/tests/ui/ptr_cast_constness.rs b/src/tools/clippy/tests/ui/ptr_cast_constness.rs
new file mode 100644
index 000000000..2c15cd429
--- /dev/null
+++ b/src/tools/clippy/tests/ui/ptr_cast_constness.rs
@@ -0,0 +1,62 @@
+//@run-rustfix
+//@aux-build:proc_macros.rs:proc-macro
+
+#![warn(clippy::ptr_cast_constness)]
+#![allow(clippy::transmute_ptr_to_ref, clippy::unnecessary_cast, unused)]
+
+extern crate proc_macros;
+use proc_macros::{external, inline_macros};
+
+unsafe fn ptr_to_ref<T, U>(p: *const T, om: *mut U) {
+    let _: &mut T = std::mem::transmute(p as *mut T);
+    let _ = &mut *(p as *mut T);
+    let _: &T = &*(om as *const T);
+}
+
+#[inline_macros]
+fn main() {
+    let ptr: *const u32 = &42_u32;
+    let mut_ptr: *mut u32 = &mut 42_u32;
+
+    let _ = ptr as *const u32;
+    let _ = mut_ptr as *mut u32;
+
+    // Make sure the lint can handle the difference in their operator precedences.
+    unsafe {
+        let ptr_ptr: *const *const u32 = &ptr;
+        let _ = *ptr_ptr as *mut u32;
+    }
+
+    let _ = ptr as *mut u32;
+    let _ = mut_ptr as *const u32;
+
+    // Lint this, since pointer::cast_mut and pointer::cast_const have ?Sized
+    let ptr_of_array: *const [u32; 4] = &[1, 2, 3, 4];
+    let _ = ptr_of_array as *const [u32];
+    let _ = ptr_of_array as *const dyn std::fmt::Debug;
+
+    // Make sure the lint is triggered inside a macro
+    let _ = inline!($ptr as *const u32);
+
+    // Do not lint inside macros from external crates
+    let _ = external!($ptr as *const u32);
+}
+
+#[clippy::msrv = "1.64"]
+fn _msrv_1_64() {
+    let ptr: *const u32 = &42_u32;
+    let mut_ptr: *mut u32 = &mut 42_u32;
+
+    // `pointer::cast_const` and `pointer::cast_mut` were stabilized in 1.65. Do not lint this
+    let _ = ptr as *mut u32;
+    let _ = mut_ptr as *const u32;
+}
+
+#[clippy::msrv = "1.65"]
+fn _msrv_1_65() {
+    let ptr: *const u32 = &42_u32;
+    let mut_ptr: *mut u32 = &mut 42_u32;
+
+    let _ = ptr as *mut u32;
+    let _ = mut_ptr as *const u32;
+}