[Bug middle-end/85074] FAIL: g++.dg/torture/pr81812.C (test for excess errors)

["danglin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85074

--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
We have default TARGET_USE_LOCAL_THUNK_ALIAS_P and
TARGET_ASM_CAN_OUTPUT_MI_THUNK is default_can_output_mi_thunk_no_vcall().

  if (!this_adjusting
      || !targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset,
                                               virtual_value, alias))
    {
      /* If this is a covariant thunk, or we don't have the necessary
         code for efficient thunks, generate a thunk function that
         just makes a call to the real function.  Unfortunately, this
         doesn't work for varargs.  */

      if (varargs_function_p (function))
        error ("generic thunk code fails for method %q#D which uses %<...%>",
               function);
    }