[COMMITTED 067/101] gccrs: Allow enabling lang_items and no_core features

[arthur . cohen]

From: Owen Avery <powerboat9.ga...@gmail.com>

gcc/rust/ChangeLog:

        * checks/errors/rust-feature.cc
        (Feature::name_hash_map):
        Add entries for Name::LANG_ITEMS and Name::NO_CORE.
        * checks/errors/rust-feature.h
        (Feature::Name::LANG_ITEMS): New.
        (Feature::Name::NO_CORE): New.

gcc/testsuite/ChangeLog:

        * rust/compile/sized-stub.rs: New test.

Signed-off-by: Owen Avery <powerboat9.ga...@gmail.com>
---
 gcc/rust/checks/errors/rust-feature.cc   | 2 ++
 gcc/rust/checks/errors/rust-feature.h    | 2 ++
 gcc/testsuite/rust/compile/sized-stub.rs | 6 ++++++
 3 files changed, 10 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/sized-stub.rs

diff --git a/gcc/rust/checks/errors/rust-feature.cc 
b/gcc/rust/checks/errors/rust-feature.cc
index 88649f14e60..c12710ae2e1 100644
--- a/gcc/rust/checks/errors/rust-feature.cc
+++ b/gcc/rust/checks/errors/rust-feature.cc
@@ -56,6 +56,8 @@ const std::map<std::string, Feature::Name> 
Feature::name_hash_map = {
   // later Rust versions
   {"optin_builtin_traits", Feature::Name::AUTO_TRAITS},
   {"extern_types", Feature::Name::EXTERN_TYPES},
+  {"lang_items", Feature::Name::LANG_ITEMS},
+  {"no_core", Feature::Name::NO_CORE},
 }; // namespace Rust
 
 tl::optional<Feature::Name>
diff --git a/gcc/rust/checks/errors/rust-feature.h 
b/gcc/rust/checks/errors/rust-feature.h
index 4ff059c6167..e6bc2362e39 100644
--- a/gcc/rust/checks/errors/rust-feature.h
+++ b/gcc/rust/checks/errors/rust-feature.h
@@ -43,6 +43,8 @@ public:
     DECL_MACRO,
     AUTO_TRAITS,
     EXTERN_TYPES,
+    LANG_ITEMS,
+    NO_CORE,
   };
 
   const std::string &as_string () { return m_name_str; }
diff --git a/gcc/testsuite/rust/compile/sized-stub.rs 
b/gcc/testsuite/rust/compile/sized-stub.rs
new file mode 100644
index 00000000000..4e89b1fb134
--- /dev/null
+++ b/gcc/testsuite/rust/compile/sized-stub.rs
@@ -0,0 +1,6 @@
+#![feature(lang_items)]
+#![feature(no_core)]
+#![no_core]
+
+#[lang = "sized"]
+trait Sized {}
-- 
2.42.1