[Bug tree-optimization/65774] [6.0 regression] FAIL: gcc.dg/builtin-arith-overflow-1.c (internal compiler error)

[sch...@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65774

--- Comment #3 from Andreas Schwab <sch...@linux-m68k.org> ---
wi::sext has undefined behaviour with offset == 0.