1 files changed, 34 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/from_raw_with_void_ptr.rs b/src/tools/clippy/tests/ui/from_raw_with_void_ptr.rs
new file mode 100644
index 000000000..8484da241
--- /dev/null
+++ b/src/tools/clippy/tests/ui/from_raw_with_void_ptr.rs
@@ -0,0 +1,34 @@
+#![warn(clippy::from_raw_with_void_ptr)]
+
+use std::ffi::c_void;
+use std::rc::Rc;
+use std::sync::Arc;
+
+fn main() {
+    // must lint
+    let ptr = Box::into_raw(Box::new(42usize)) as *mut c_void;
+    let _ = unsafe { Box::from_raw(ptr) };
+
+    // shouldn't be linted
+    let _ = unsafe { Box::from_raw(ptr as *mut usize) };
+
+    // shouldn't be linted
+    let should_not_lint_ptr = Box::into_raw(Box::new(12u8)) as *mut u8;
+    let _ = unsafe { Box::from_raw(should_not_lint_ptr as *mut u8) };
+
+    // must lint
+    let ptr = Rc::into_raw(Rc::new(42usize)) as *mut c_void;
+    let _ = unsafe { Rc::from_raw(ptr) };
+
+    // must lint
+    let ptr = Arc::into_raw(Arc::new(42usize)) as *mut c_void;
+    let _ = unsafe { Arc::from_raw(ptr) };
+
+    // must lint
+    let ptr = std::rc::Weak::into_raw(Rc::downgrade(&Rc::new(42usize))) as *mut c_void;
+    let _ = unsafe { std::rc::Weak::from_raw(ptr) };
+
+    // must lint
+    let ptr = std::sync::Weak::into_raw(Arc::downgrade(&Arc::new(42usize))) as *mut c_void;
+    let _ = unsafe { std::sync::Weak::from_raw(ptr) };
+}