[Bug sanitizer/80875] [7/8 Regression] UBSAN: compile time crash in fold_binary_loc at fold-const.c:9817

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80875

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
9810                  && negate_expr_p (op0)
9811                  && (tem = negate_expr (op1)) != op1

should probaby use negate_expr_p (op1) to guard this.