rustc_allow_const_fn_unstable

Author: powerboat9

gcc/rust/util/rust-attribute-values.h

@@ -60,6 +60,7 @@ class Attributes
   static constexpr auto &RUSTC_PROMOTABLE = "rustc_promotable";
   static constexpr auto &RUSTC_CONST_STABLE = "rustc_const_stable";
   static constexpr auto &RUSTC_CONST_UNSTABLE = "rustc_const_unstable";
+  static constexpr auto &RUSTC_ALLOW_CONST_FN_UNSTABLE = "rustc_allow_const_fn_unstable";
 
   static constexpr auto &RUSTC_SPECIALIZATION_TRAIT
     = "rustc_specialization_trait";

gcc/rust/util/rust-attributes.cc

@@ -103,6 +103,7 @@ static const BuiltinAttrDefinition __definitions[]
      {Attrs::RUSTC_PROMOTABLE, CODE_GENERATION},
      {Attrs::RUSTC_CONST_STABLE, STATIC_ANALYSIS},
      {Attrs::RUSTC_CONST_UNSTABLE, STATIC_ANALYSIS},
+     {Attrs::RUSTC_ALLOW_CONST_FN_UNSTABLE, STATIC_ANALYSIS},
      {Attrs::PRELUDE_IMPORT, NAME_RESOLUTION},
      {Attrs::TRACK_CALLER, CODE_GENERATION},
      {Attrs::RUSTC_SPECIALIZATION_TRAIT, TYPE_CHECK},