Make *const (), *mut () okay for FFI

2021-04-16 11:50:51 -07:00 · 2021-04-16 11:50:51 -07:00 · abfad74ec6
commit abfad74ec6
parent c17e3e2c09
3 changed files with 11 additions and 11 deletions
--- a/compiler/rustc_lint/src/types.rs
+++ b/compiler/rustc_lint/src/types.rs
@ -1060,6 +1060,15 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
                FfiSafe
            }

+            ty::RawPtr(ty::TypeAndMut { ty, .. })
+                if match ty.kind() {
+                    ty::Tuple(tuple) => tuple.is_empty(),
+                    _ => false,
+                } =>
+            {
+                FfiSafe
+            }
+
            ty::RawPtr(ty::TypeAndMut { ty, .. }) | ty::Ref(_, ty, _) => {
                self.check_type_for_ffi(cache, ty)
            }