From: Philip Herron <herron.phi...@googlemail.com>
We need to resolve the never type which is its own special AST node so it
doesnt magically get handled like the regular builtin type paths such as
i32.
Fixes #3035
gcc/rust/ChangeLog:
* resolve/rust-ast-resolve-type.cc (ResolveType::visit):
handle never type
(ResolveTypeToCanonicalPath::visit): likewise
* resolve/rust-ast-resolve-type.h: missing never type
* resolve/rust-name-resolver.cc (Resolver::generate_builtins):
track never type node_id
(Resolver::setup_builtin): likewise
* resolve/rust-name-resolver.h: new never type getter
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: nr2 cant handle this
* rust/compile/issue-3035.rs: New test.
Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
gcc/rust/resolve/rust-ast-resolve-type.cc | 8 +++++++-
gcc/rust/resolve/rust-ast-resolve-type.h | 2 ++
gcc/rust/resolve/rust-name-resolver.cc | 9 ++++++--
gcc/rust/resolve/rust-name-resolver.h | 7 ++++++-
gcc/testsuite/rust/compile/issue-3035.rs | 25 +++++++++++++++++++++++
gcc/testsuite/rust/compile/nr2/exclude | 3 ++-
6 files changed, 49 insertions(+), 5 deletions(-)
create mode 100644 gcc/testsuite/rust/compile/issue-3035.rs
diff --git a/gcc/rust/resolve/rust-ast-resolve-type.cc
b/gcc/rust/resolve/rust-ast-resolve-type.cc
index 934d6ea3fbd..cee259cceb4 100644
--- a/gcc/rust/resolve/rust-ast-resolve-type.cc
+++ b/gcc/rust/resolve/rust-ast-resolve-type.cc
@@ -69,7 +69,7 @@ ResolveType::visit (AST::InferredType &)
void
ResolveType::visit (AST::NeverType &)
{
- // FIXME
+ resolved_node = resolver->get_never_type_node_id ();
}
void
@@ -501,6 +501,12 @@ ResolveTypeToCanonicalPath::visit (AST::TraitObjectType &)
rust_unreachable ();
}
+void
+ResolveTypeToCanonicalPath::visit (AST::NeverType &type)
+{
+ result = CanonicalPath::new_seg (type.get_node_id (), "!");
+}
+
ResolveTypeToCanonicalPath::ResolveTypeToCanonicalPath ()
: ResolverBase (), result (CanonicalPath::create_empty ())
{}
diff --git a/gcc/rust/resolve/rust-ast-resolve-type.h
b/gcc/rust/resolve/rust-ast-resolve-type.h
index 0076424ef51..5e382445a14 100644
--- a/gcc/rust/resolve/rust-ast-resolve-type.h
+++ b/gcc/rust/resolve/rust-ast-resolve-type.h
@@ -246,6 +246,8 @@ public:
void visit (AST::TraitObjectType &type) override;
+ void visit (AST::NeverType &type) override;
+
private:
ResolveTypeToCanonicalPath ();
diff --git a/gcc/rust/resolve/rust-name-resolver.cc
b/gcc/rust/resolve/rust-name-resolver.cc
index ee52e5cc3d1..21147bd86fa 100644
--- a/gcc/rust/resolve/rust-name-resolver.cc
+++ b/gcc/rust/resolve/rust-name-resolver.cc
@@ -429,7 +429,10 @@ Resolver::generate_builtins ()
setup_builtin ("isize", isize);
setup_builtin ("char", char_tyty);
setup_builtin ("str", str);
- setup_builtin ("!", never);
+
+ // never type
+ NodeId never_node_id = setup_builtin ("!", never);
+ set_never_type_node_id (never_node_id);
// unit type ()
TyTy::TupleType *unit_tyty
@@ -443,7 +446,7 @@ Resolver::generate_builtins ()
set_unit_type_node_id (unit_type->get_node_id ());
}
-void
+NodeId
Resolver::setup_builtin (const std::string &name, TyTy::BaseType *tyty)
{
AST::PathIdentSegment seg (name, BUILTINS_LOCATION);
@@ -459,6 +462,8 @@ Resolver::setup_builtin (const std::string &name,
TyTy::BaseType *tyty)
mappings.insert_canonical_path (
builtin_type->get_node_id (),
CanonicalPath::new_seg (builtin_type->get_node_id (), name));
+
+ return builtin_type->get_node_id ();
}
void
diff --git a/gcc/rust/resolve/rust-name-resolver.h
b/gcc/rust/resolve/rust-name-resolver.h
index c34002eb18e..43b79e51005 100644
--- a/gcc/rust/resolve/rust-name-resolver.h
+++ b/gcc/rust/resolve/rust-name-resolver.h
@@ -163,9 +163,13 @@ public:
Scope &get_macro_scope () { return macro_scope; }
NodeId get_global_type_node_id () { return global_type_node_id; }
+
void set_unit_type_node_id (NodeId id) { unit_ty_node_id = id; }
NodeId get_unit_type_node_id () { return unit_ty_node_id; }
+ void set_never_type_node_id (NodeId id) { never_ty_node_id = id; }
+ NodeId get_never_type_node_id () { return never_ty_node_id; }
+
void push_new_module_scope (NodeId module_id)
{
current_module_stack.push_back (module_id);
@@ -208,7 +212,7 @@ private:
Resolver ();
void generate_builtins ();
- void setup_builtin (const std::string &name, TyTy::BaseType *tyty);
+ NodeId setup_builtin (const std::string &name, TyTy::BaseType *tyty);
Analysis::Mappings &mappings;
TypeCheckContext *tyctx;
@@ -222,6 +226,7 @@ private:
NodeId global_type_node_id;
NodeId unit_ty_node_id;
+ NodeId never_ty_node_id;
// map a AST Node to a Rib
std::map<NodeId, Rib *> name_ribs;
diff --git a/gcc/testsuite/rust/compile/issue-3035.rs
b/gcc/testsuite/rust/compile/issue-3035.rs
new file mode 100644
index 00000000000..3266d841dea
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3035.rs
@@ -0,0 +1,25 @@
+#[lang = "sized"]
+trait Sized {}
+
+// ---- gccrs additions
+
+#[lang = "clone"]
+pub trait Clone: Sized {
+ #[stable(feature = "rust1", since = "1.0.0")]
+ #[must_use = "cloning is often expensive and is not expected to have side
effects"]
+ fn clone(&self) -> Self;
+
+ #[inline]
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn clone_from(&mut self, source: &Self) {
+ *self = source.clone()
+ }
+}
+
+#[unstable(feature = "never_type", issue = "35121")]
+impl Clone for ! {
+ #[inline]
+ fn clone(&self) -> Self {
+ *self
+ }
+}
diff --git a/gcc/testsuite/rust/compile/nr2/exclude
b/gcc/testsuite/rust/compile/nr2/exclude
index 8993c6d5750..5f5863bde87 100644
--- a/gcc/testsuite/rust/compile/nr2/exclude
+++ b/gcc/testsuite/rust/compile/nr2/exclude
@@ -275,4 +275,5 @@ unknown-associated-item.rs
box_syntax_feature_gate.rs
dropck_eyepatch_feature_gate.rs
inline_asm_parse_output_operand.rs
-issue-3030.rs
\ No newline at end of file
+issue-3030.rs
+issue-3035.rs
--
2.45.2
