gccrs: Recognize unstable as a builtin attribute

gcc/rust/ChangeLog:

	* util/rust-attribute-values.h
	(Attributes::UNSTABLE): New.
	* util/rust-attributes.cc
	(__definitions): Add Attributes::UNSTABLE.

gcc/testsuite/ChangeLog:

	* rust/compile/unstable-fn.rs: New test.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

diff --git a/gcc/rust/util/rust-attribute-values.h b/gcc/rust/util/rust-attribute-values.h
index 04aef99be68f32e18ef057799b5cbf1f02b41f7a..a8551c07dba6349dde0c240fa9d61a35763ee3d1 100644 (file)
--- a/gcc/rust/util/rust-attribute-values.h
+++ b/gcc/rust/util/rust-attribute-values.h
@@ -52,6 +52,7 @@ public:
   static constexpr auto &RUSTC_INHERIT_OVERFLOW_CHECKS
     = "rustc_inherit_overflow_checks";
   static constexpr auto &STABLE = "stable";
+  static constexpr auto &UNSTABLE = "unstable";
 };
 } // namespace Values
 } // namespace Rust

diff --git a/gcc/rust/util/rust-attributes.cc b/gcc/rust/util/rust-attributes.cc
index e10918b2f8d0ba3e2107f6574aa4fb32bcd22e1b..84d1781d0b360c4e7c4c70d0368f5283100ade0c 100644 (file)
--- a/gcc/rust/util/rust-attributes.cc
+++ b/gcc/rust/util/rust-attributes.cc
@@ -60,7 +60,8 @@ static const BuiltinAttrDefinition __definitions[]
      // #![feature(rustc_attrs)]
      {Attrs::RUSTC_DEPRECATED, STATIC_ANALYSIS},
      {Attrs::RUSTC_INHERIT_OVERFLOW_CHECKS, CODE_GENERATION},
-     {Attrs::STABLE, STATIC_ANALYSIS}};
+     {Attrs::STABLE, STATIC_ANALYSIS},
+     {Attrs::UNSTABLE, STATIC_ANALYSIS}};
 
 BuiltinAttributeMappings *
 BuiltinAttributeMappings::get ()

diff --git a/gcc/testsuite/rust/compile/unstable-fn.rs b/gcc/testsuite/rust/compile/unstable-fn.rs
new file mode 100644 (file)
index 0000000..4cbbebd
--- /dev/null
+++ b/gcc/testsuite/rust/compile/unstable-fn.rs
@@ -0,0 +1,2 @@
+#[unstable(feature = "some_feature", issue = "12345")]
+pub fn foo() {}