1comptime {
 2    _ = 0e.0;
 3}
 4comptime {
 5    _ = 0E.0;
 6}
 7comptime {
 8    _ = 12e.0;
 9}
10comptime {
11    _ = 12E.0;
12}
13comptime {
14    _ = 0xp0;
15}
16comptime {
17    _ = 0xP0;
18}
19
20// error
21//
22// :2:11: error: unexpected period after exponent
23// :5:11: error: unexpected period after exponent
24// :8:12: error: unexpected period after exponent
25// :11:12: error: unexpected period after exponent
26// :14:9: error: expected a digit after base prefix
27// :17:9: error: expected a digit after base prefix