https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66554
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Indeed:
> ./cc1plus -quiet t.ii -O3 -I include
t.ii: In function ‘void fn1()’:
t.ii:3:6: error: invalid types in conversion to integer
void fn1() {
^
vector(4) signed int
vector(4) unsigned int
vect__13.24_98 = (vector(4) signed int) vect_c.21_94;
Jakub, isn't this just PR66233?
