Coerce const FnDefs to implement const Fn traits

2021-09-15 11:28:10 +00:00
parent d3f981b144
commit f8aa73d3dd
7 changed files with 55 additions and 13 deletions
--- a/compiler/rustc_middle/src/traits/select.rs
+++ b/compiler/rustc_middle/src/traits/select.rs
@@ -120,7 +120,9 @@ pub enum SelectionCandidate<'tcx> {

    /// Implementation of a `Fn`-family trait by one of the anonymous
    /// types generated for a fn pointer type (e.g., `fn(int) -> int`)
-    FnPointerCandidate,
+    FnPointerCandidate {
+        is_const: bool,
+    },

    /// Builtin implementation of `DiscriminantKind`.
    DiscriminantKindCandidate,