[Bug tree-optimization/84526] [8 Regression] ICE in generic_overlap at gcc/gimple-ssa-warn-restrict.c:927 since r257860

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84526

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Thanks.  Doesn't need -m32, actually.

 923       /* There's no way to distinguish an access to the same member
 924          of a structure from one to two distinct members of the same
 925          structure.  Give up to avoid excessive false positives.  */
 926       tree basetype = TREE_TYPE (TREE_TYPE (dstref->base));
 927       if (RECORD_OR_UNION_TYPE_P (basetype))
 928         return false;

basetype is null here.