be even more precise about "cast" vs "coercion"

Author: Lukas Markeffsky

clippy_utils/src/qualify_min_const_fn.rs

@@ -123,20 +123,20 @@ fn check_rvalue<'tcx>(
  | CastKind::FloatToFloat
  | CastKind::FnPtrToPtr
  | CastKind::PtrToPtr
- | CastKind::PointerCoercion(PointerCoercion::MutToConstPointer | PointerCoercion::ArrayToPointer),
+ | CastKind::PointerCoercion(PointerCoercion::MutToConstPointer | PointerCoercion::ArrayToPointer, _),
  operand,
  _,
 ) => check_operand(tcx, operand, span, body, msrv),
 Rvalue::Cast(
 CastKind::PointerCoercion(
 PointerCoercion::UnsafeFnPointer
  | PointerCoercion::ClosureFnPointer(_)
- | PointerCoercion::ReifyFnPointer,
+ | PointerCoercion::ReifyFnPointer, _
 ),
  _,
  _,
 ) => Err((span,"function pointer casts are not allowed in const fn".into())),
-Rvalue::Cast(CastKind::PointerCoercion(PointerCoercion::Unsize), op, cast_ty) => {
+Rvalue::Cast(CastKind::PointerCoercion(PointerCoercion::Unsize, _), op, cast_ty) => {
 letSome(pointee_ty) = cast_ty.builtin_deref(true)else{
 // We cannot allow this for now.
 returnErr((span,"unsizing casts are only allowed for references right now".into()));
@@ -154,7 +154,7 @@ fn check_rvalue<'tcx>(
 Rvalue::Cast(CastKind::PointerExposeProvenance, _, _) => {
 Err((span,"casting pointers to ints is unstable in const fn".into()))
 },
-Rvalue::Cast(CastKind::PointerCoercion(PointerCoercion::DynStar), _, _) => {
+Rvalue::Cast(CastKind::PointerCoercion(PointerCoercion::DynStar, _), _, _) => {
 // FIXME(dyn-star)
 unimplemented!()
 },