gccrs: Add typecheck for path patterns.

gcc/rust/ChangeLog:

	* hir/tree/rust-hir.cc (Item::item_kind_string): New function.
	* hir/tree/rust-hir.h: New function.
	* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
		Modify to check all arms in match expressions even if some of them
		has errors.
	* typecheck/rust-hir-type-check-pattern.cc (TypeCheckPattern::visit):
		Add and fix check for path patterns.

gcc/testsuite/ChangeLog:

	* rust/compile/issue-2324-2.rs: Fix error message.
	* rust/compile/match9.rs: New test.

Signed-off-by: Raiki Tamura <tamaron1203@gmail.com>

2 files changed, 31 insertions, 1 deletions

diff --git a/gcc/testsuite/rust/compile/issue-2324-2.rs b/gcc/testsuite/rust/compile/issue-2324-2.rs
index 5ef4014..1530b00 100644
--- a/gcc/testsuite/rust/compile/issue-2324-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2324-2.rs
@@ -6,7 +6,7 @@ enum State {
 fn print_on_failure(state: &State) {
     match *state {
         State::Succeeded => (),
-        State::Failed => (), // { dg-error "expected unit struct, unit variant or constant, found tuple variant" }
+        State::Failed => (), // { dg-error "expected unit struct, unit variant or constant, found struct variant" }
         _ => ()
     }
 }
diff --git a/gcc/testsuite/rust/compile/match9.rs b/gcc/testsuite/rust/compile/match9.rs
new file mode 100644
index 0000000..115d458
--- /dev/null
+++ b/gcc/testsuite/rust/compile/match9.rs
@@ -0,0 +1,30 @@
+enum E {
+    A(),
+    B,
+}
+
+const CONST_E: E = E::A();
+
+static static_e: E = E::A();
+
+type type_alias = E;
+
+fn f(e: E) {
+    match e {
+        E::A => {}
+        // { dg-error "expected unit struct, unit variant or constant, found tuple variant .E::A." "" { target *-*-* } .-1 }
+        E::B => {}
+        crate::CONST_E => {}
+        crate::type_alias => {}
+        // { dg-error "expected unit struct, unit variant or constant, found type alias .crate::type_alias." "" { target *-*-* } .-1 }
+        crate::E => {}
+        // { dg-error "expected unit struct, unit variant or constant, found enum .crate::E." "" { target *-*-* } .-1 }
+        crate::static_e => {}
+        // { dg-error "expected unit struct, unit variant or constant, found static .crate::static_e." "" { target *-*-* } .-1 }
+        crate::f => {}
+        // { dg-error "expected unit struct, unit variant or constant, found function .crate::f." "" { target *-*-* } .-1 }
+        _ => {}
+    }
+}
+
+fn main() {}