[Bug c/84298] Shared TYPE_SIZE_UNIT ends up with freed SSA names

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84298

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
The fix is to place a DECL_EXPR somewhere by the FE.  We have some duplicates
with similar issues.