[gcc r14-7300] gccrs: Fix ICE in ADTType::is_concrete

[Arthur Cohen]

https://gcc.gnu.org/g:4306bf12227d62ebcb8b2d9c3d570be8e4b767ff

commit r14-7300-g4306bf12227d62ebcb8b2d9c3d570be8e4b767ff
Author: Philip Herron <herron.philip@googlemail.com>
Date:   Sun Feb 26 22:36:20 2023 +0000

    gccrs: Fix ICE in ADTType::is_concrete
    
    Signed-off-by: Philip Herron <herron.philip@googlemail.com>
    
    gcc/rust/ChangeLog:
    
            * typecheck/rust-tyty.cc (ADTType::is_concrete):  need to consider if is a num_variant
            * typecheck/rust-tyty.h: refactor to cc file

Diff:
---
 gcc/rust/typecheck/rust-tyty.cc | 24 ++++++++++++++++++++++++
 gcc/rust/typecheck/rust-tyty.h  | 18 +-----------------
 2 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/gcc/rust/typecheck/rust-tyty.cc b/gcc/rust/typecheck/rust-tyty.cc
index a1f4911511a..dc7a08f4792 100644
--- a/gcc/rust/typecheck/rust-tyty.cc
+++ b/gcc/rust/typecheck/rust-tyty.cc
@@ -1110,6 +1110,30 @@ ADTType::as_string () const
   return identifier + subst_as_string () + "{" + variants_buffer + "}";
 }
 
+bool
+ADTType::is_concrete () const
+{
+  if (is_unit ())
+    {
+      return !needs_substitution ();
+    }
+
+  for (auto &variant : variants)
+    {
+      bool is_num_variant
+	= variant->get_variant_type () == VariantDef::VariantType::NUM;
+      if (is_num_variant)
+	continue;
+
+      for (auto &field : variant->get_fields ())
+	{
+	  if (!field->is_concrete ())
+	    return false;
+	}
+    }
+  return true;
+}
+
 bool
 ADTType::can_eq (const BaseType *other, bool emit_errors) const
 {
diff --git a/gcc/rust/typecheck/rust-tyty.h b/gcc/rust/typecheck/rust-tyty.h
index ddc34636ae7..5516cd70385 100644
--- a/gcc/rust/typecheck/rust-tyty.h
+++ b/gcc/rust/typecheck/rust-tyty.h
@@ -604,23 +604,7 @@ public:
     return identifier + subst_as_string ();
   }
 
-  bool is_concrete () const override final
-  {
-    if (is_unit ())
-      {
-	return !needs_substitution ();
-      }
-
-    for (auto &variant : variants)
-      {
-	for (auto &field : variant->get_fields ())
-	  {
-	    if (!field->is_concrete ())
-	      return false;
-	  }
-      }
-    return true;
-  }
+  bool is_concrete () const override final;
 
   BaseType *clone () const final override;
   BaseType *monomorphized_clone () const final override;