c++: Fix GC with TU_LOCAL_ENTITY [PR119564]

When adding TU_LOCAL_ENTITY in r15-6379 I neglected to add it to
cp_tree_node_structure, so garbage collection was crashing on it.

	PR c++/119564

gcc/cp/ChangeLog:

	* decl.cc (cp_tree_node_structure): Add TU_LOCAL_ENTITY; fix
	formatting.

gcc/testsuite/ChangeLog:

	* g++.dg/modules/gc-3_a.C: New test.
	* g++.dg/modules/gc-3_b.C: New test.

Signed-off-by: Nathaniel Shead <[email protected]>
Reviewed-by: Jason Merrill <[email protected]>

Author: wreien

gcc/cp/decl.cc

@@ -19834,21 +19834,22 @@ cp_tree_node_structure (union lang_tree_node * t)
 {
   switch (TREE_CODE (&t->generic))
     {
-    case ARGUMENT_PACK_SELECT:  return TS_CP_ARGUMENT_PACK_SELECT;
+    case ARGUMENT_PACK_SELECT:	return TS_CP_ARGUMENT_PACK_SELECT;
     case BASELINK:		return TS_CP_BASELINK;
-    case CONSTRAINT_INFO:       return TS_CP_CONSTRAINT_INFO;
+    case CONSTRAINT_INFO:	return TS_CP_CONSTRAINT_INFO;
     case DEFERRED_NOEXCEPT:	return TS_CP_DEFERRED_NOEXCEPT;
     case DEFERRED_PARSE:	return TS_CP_DEFERRED_PARSE;
     case IDENTIFIER_NODE:	return TS_CP_IDENTIFIER;
     case LAMBDA_EXPR:		return TS_CP_LAMBDA_EXPR;
-    case BINDING_VECTOR:		return TS_CP_BINDING_VECTOR;
+    case BINDING_VECTOR:	return TS_CP_BINDING_VECTOR;
     case OVERLOAD:		return TS_CP_OVERLOAD;
     case PTRMEM_CST:		return TS_CP_PTRMEM;
     case STATIC_ASSERT:		return TS_CP_STATIC_ASSERT;
     case TEMPLATE_DECL:		return TS_CP_TEMPLATE_DECL;
     case TEMPLATE_INFO:		return TS_CP_TEMPLATE_INFO;
     case TEMPLATE_PARM_INDEX:	return TS_CP_TPI;
     case TRAIT_EXPR:		return TS_CP_TRAIT_EXPR;
+    case TU_LOCAL_ENTITY:	return TS_CP_TU_LOCAL_ENTITY;
     case USERDEF_LITERAL:	return TS_CP_USERDEF_LITERAL;
     default:			return TS_CP_GENERIC;
     }

gcc/testsuite/g++.dg/modules/gc-3_a.C

@@ -0,0 +1,7 @@
+// PR c++/119564
+// { dg-additional-options "-fmodules -Wtemplate-names-tu-local" }
+// { dg-module-cmi M }
+
+export module M;
+static void foo() {};  // { dg-message "declared" }
+template <typename> void bar() { foo(); }  // { dg-warning "TU-local" }

gcc/testsuite/g++.dg/modules/gc-3_b.C

@@ -0,0 +1,4 @@
+// PR c++/119564
+// { dg-additional-options "-fmodules -fno-module-lazy --param=ggc-min-expand=0 --param=ggc-min-heapsize=0" }
+
+import M;