[Bug middle-end/96194] [10/11 Regression] ICE in assign_temp, at function.c:984 during RTL pass: expand

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96194

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- gcc/expr.c.jj       2020-07-13 19:09:33.173872178 +0200
+++ gcc/expr.c  2020-07-14 13:07:26.228801996 +0200
@@ -8382,7 +8382,9 @@ expand_constructor (tree exp, rtx target
       || GET_CODE (target) == PARALLEL || modifier == EXPAND_STACK_PARM
       /* Also make a temporary if the store is to volatile memory, to
         avoid individual accesses to aggregate members.  */
-      || (GET_CODE (target) == MEM && MEM_VOLATILE_P (target)))
+      || (GET_CODE (target) == MEM
+         && MEM_VOLATILE_P (target)
+         && !TREE_ADDRESSABLE (TREE_TYPE (exp))))
     {
       if (avoid_temp_mem)
        return NULL_RTX;
fixes this - even when volatile, for non-POD types the middle-end may not
create temporaries period.