[Bug c++/122658] [14/15/16 Regression] ICE in tsubst_expr since r14-4796

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122658

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GXX_TESTSUITE_STDS=98,11,14,17,20,23,26 make -j32 -k check-g++
doesn't regress anything with
--- gcc/cp/call.cc      2025-11-10 22:58:34.766352278 +0100
+++ gcc/cp/call.cc      2025-11-17 16:11:36.711665711 +0100
@@ -10328,18 +10328,11 @@ build_over_call (struct z_candidate *can
        TREE_NO_WARNING (expr) = true;
       if (immediate_invocation_p (fn))
        {
-         tree obj_arg = NULL_TREE, exprimm = expr;
+         tree obj_arg = NULL_TREE;
          if (DECL_CONSTRUCTOR_P (fn))
            obj_arg = first_arg;
-         if (obj_arg
-             && is_dummy_object (obj_arg)
-             && !type_dependent_expression_p (obj_arg))
-           {
-             exprimm = build_cplus_new (DECL_CONTEXT (fn), expr, complain);
-             obj_arg = NULL_TREE;
-           }
          /* Look through *(const T *)&obj.  */
-         else if (obj_arg && INDIRECT_REF_P (obj_arg))
+         if (obj_arg && INDIRECT_REF_P (obj_arg))
            {
              tree addr = TREE_OPERAND (obj_arg, 0);
              STRIP_NOPS (addr);
@@ -10351,7 +10344,7 @@ build_over_call (struct z_candidate *can
                    obj_arg = TREE_OPERAND (addr, 0);
                }
            }
-         fold_non_dependent_expr (exprimm, complain,
+         fold_non_dependent_expr (expr, complain,
                                   /*manifestly_const_eval=*/true,
                                   obj_arg);
        }