[gcc r12-9511] Revert "c++: DMI in template with virtual base [PR106890]"

[gcc r12-9511] Revert "c++: DMI in template with virtual base [PR106890]"

[Jason Merrill]

https://gcc.gnu.org/g:13a269a015f888a0001af7b9ab564fadbee4a808

commit r12-9511-g13a269a015f888a0001af7b9ab564fadbee4a808
Author: Jason Merrill <jason@redhat.com>
Date:   Thu May 4 10:26:25 2023 -0400

    Revert "c++: DMI in template with virtual base [PR106890]"
    
    The PR106890 patch caused PR109666; for 12.3 let's just revert it.
    
            PR c++/109666
    
    This reverts commit 94569d91bd4c604da755b4aae84256e7fe21196a.

Diff:
---
 gcc/cp/init.cc                                | 14 --------------
 gcc/testsuite/g++.dg/cpp0x/nsdmi-template25.C | 18 ------------------
 2 files changed, 32 deletions(-)

diff --git a/gcc/cp/init.cc b/gcc/cp/init.cc
index 92969857ea8..75dbfe112b5 100644
--- a/gcc/cp/init.cc
+++ b/gcc/cp/init.cc
@@ -613,18 +613,6 @@ maybe_instantiate_nsdmi_init (tree member, tsubst_flags_t complain)
 	      pushed = true;
 	    }
 
-	  /* If we didn't push_to_top_level, still step out of constructor
-	     scope so build_base_path doesn't try to use its __in_chrg.  */
-	  tree cfd = current_function_decl;
-	  auto cbl = current_binding_level;
-	  if (at_function_scope_p ())
-	    {
-	      current_function_decl
-		= decl_function_context (current_function_decl);
-	      while (current_binding_level->kind != sk_class)
-		current_binding_level = current_binding_level->level_chain;
-	    }
-
 	  inject_this_parameter (ctx, TYPE_UNQUALIFIED);
 
 	  start_lambda_scope (member);
@@ -643,8 +631,6 @@ maybe_instantiate_nsdmi_init (tree member, tsubst_flags_t complain)
 	  if (init != error_mark_node)
 	    hash_map_safe_put<hm_ggc> (nsdmi_inst, member, init);
 
-	  current_function_decl = cfd;
-	  current_binding_level = cbl;
 	  if (pushed)
 	    {
 	      pop_deferring_access_checks ();
diff --git a/gcc/testsuite/g++.dg/cpp0x/nsdmi-template25.C b/gcc/testsuite/g++.dg/cpp0x/nsdmi-template25.C
deleted file mode 100644
index 368e745540e..00000000000
--- a/gcc/testsuite/g++.dg/cpp0x/nsdmi-template25.C
+++ /dev/null
@@ -1,18 +0,0 @@
-// PR c++/106890
-// { dg-do compile { target c++11 } }
-
-struct A
-{
-  int p;
-};
-
-template<typename T>
-struct B : virtual public A
-{
-  B() { }
-  B(int) { }
-
-  int k = this->p;
-};
-
-template struct B<int>;