Merge #1007

1007: Add missing canonicalization of slices and raw pointer types r=philberty a=philberty

This is part of my patch series for slices. This adds the missing visitors
for name canonicalization. More information in the patch, once we get
slice support in we need to start taking advantage of `@dkm's` HIR
visitor refactoring to avoid these issues with missing visitors making
simple bugs hard to track down.

Fixes #1005


Co-authored-by: Philip Herron <philip.herron@embecosm.com>

gcc/rust/resolve/rust-ast-resolve-type.cc

@@ -167,6 +167,45 @@ ResolveTypeToCanonicalPath::visit (AST::ReferenceType &ref)
   result = result.append (ident_seg);
 }
 
+void
+ResolveTypeToCanonicalPath::visit (AST::RawPointerType &ref)
+{
+  auto inner_type
+    = ResolveTypeToCanonicalPath::resolve (*ref.get_type_pointed_to ().get (),
+					   include_generic_args_flag,
+					   type_resolve_generic_args_flag);
+
+  std::string segment_string ("*");
+  switch (ref.get_pointer_type ())
+    {
+    case AST::RawPointerType::PointerType::MUT:
+      segment_string += "mut ";
+      break;
+
+    case AST::RawPointerType::PointerType::CONST:
+      segment_string += "const ";
+      break;
+    }
+
+  segment_string += inner_type.get ();
+
+  auto ident_seg = CanonicalPath::new_seg (ref.get_node_id (), segment_string);
+  result = result.append (ident_seg);
+}
+
+void
+ResolveTypeToCanonicalPath::visit (AST::SliceType &slice)
+{
+  auto inner_type
+    = ResolveTypeToCanonicalPath::resolve (*slice.get_elem_type ().get (),
+					   include_generic_args_flag,
+					   type_resolve_generic_args_flag);
+  std::string segment_string = "[" + inner_type.get () + "]";
+  auto ident_seg
+    = CanonicalPath::new_seg (slice.get_node_id (), segment_string);
+  result = result.append (ident_seg);
+}
+
 void
 ResolveType::visit (AST::ReferenceType &type)
 {

gcc/rust/resolve/rust-ast-resolve-type.h

@@ -122,6 +122,10 @@ class ResolveTypeToCanonicalPath : public ResolverBase
       }
   }
 
+  void visit (AST::SliceType &slice) override;
+
+  void visit (AST::RawPointerType &ptr) override;
+
   void visit (AST::ReferenceType &ref) override;
 
   void visit (AST::TypePathSegmentGeneric &seg) override;

gcc/testsuite/rust/compile/issue-1005.rs

@@ -0,0 +1,4 @@
+// { dg-additional-options "-w" }
+impl<T> *const T {
+    fn test(self) {}
+}