[Bug c++/91002] ICE in make_ssa_name_fn, at tree-ssanames.c:271 with VLA type in reinterpret_cast

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91002

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-06-27
            Version|unknown                     |10.0
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) up
#1  0x00000000017c0d03 in make_ssa_name_fn (fn=0x7ffff69e6210, var=
    <error_mark 0x7ffff687ae40>, stmt=<gimple 0x0>, version=0)
    at /space/rguenther/src/svn/trunk2/gcc/tree-ssanames.c:268
268       gcc_assert (VAR_P (var)
(gdb) p var
$1 = <error_mark 0x7ffff687ae40>
#3  0x000000000153c00b in remap_ssa_name (name=<ssa_name 0x7ffff69eb1b0>, 
    id=0x7fffffffd5f0) at /space/rguenther/src/svn/trunk2/gcc/tree-inline.c:246
246           new_tree = make_ssa_name (remap_type (TREE_TYPE (name), id));

so we have a released SSA name here.  One of the many duplicates with VLAs
missing DECL_EXPRs.