#zig build-obj {
--name test -fno-emit-bin
-Mroot=test.zig
#}

#write test.zig {
extern fn ext() usize;
var bytes: [ext()]u8 = undefined;
export fn f() void {
    for (&bytes, 0..) |*b, i| {
        b.* = @as(u8, i);
    }
}
#}
#update
#check errors {
test.zig:2:16: error: comptime call of extern function
test.zig:2:12: note: types must be comptime-known
#}
