[Bug sanitizer/66190] [5/6 Regression] ICE: tree code ‘call_expr’ is not supported in LTO streams with -fsanitize=null

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66190

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So
static int & b = (int &) (UBSAN_NULL (&a, 2B, 0);, &a;);
survives it to the expansion.  It appears that we shouldn't instrument statics
like that.