Rollup merge of #59580 - taiki-e:coerce-closure, r=oli-obk

Allow closure to unsafe fn coercion

Closes #57883

2 files changed, 12 insertions, 0 deletions

diff --git a/src/test/compile-fail/coerce-unsafe-closure-to-unsafe-fn-ptr.rs b/src/test/compile-fail/coerce-unsafe-closure-to-unsafe-fn-ptr.rs
new file mode 100644
index 00000000000..36777693fab
--- /dev/null
+++ b/src/test/compile-fail/coerce-unsafe-closure-to-unsafe-fn-ptr.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let _: unsafe fn() = || { ::std::pin::Pin::new_unchecked(&0_u8); };
+    //~^ ERROR E0133
+    let _: unsafe fn() = || unsafe { ::std::pin::Pin::new_unchecked(&0_u8); }; // OK
+}
diff --git a/src/test/run-pass/typeck-closure-to-unsafe-fn-ptr.rs b/src/test/run-pass/typeck-closure-to-unsafe-fn-ptr.rs
new file mode 100644
index 00000000000..fe15b912d60
--- /dev/null
+++ b/src/test/run-pass/typeck-closure-to-unsafe-fn-ptr.rs
@@ -0,0 +1,7 @@
+unsafe fn call_unsafe(func: unsafe fn() -> ()) -> () {
+    func()
+}
+
+pub fn main() {
+    unsafe { call_unsafe(|| {}); }
+}