| 1 | const S = packed struct(u2) { |
| 2 | a: u2, |
| 3 | }; |
| 4 | export fn entry1(x: u8) void { |
| 5 | const s: S = .{ .a = @intCast(x) }; |
| 6 | switch (s) { |
| 7 | .{ .a = 0b00 }, .{ .a = 0b01 }, .{ .a = 0b10 }, .{ .a = 0b11 } => {}, |
| 8 | else => {}, |
| 9 | } |
| 10 | } |
| 11 | export fn entry2(x: u8) void { |
| 12 | const s: S = .{ .a = @intCast(x) }; |
| 13 | switch (s) { |
| 14 | .{ .a = 0b00 }, .{ .a = 0b01 }, .{ .a = 0b11 } => {}, |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | const U = packed union(u2) { |
| 19 | a: u2, |
| 20 | b: i2, |
| 21 | }; |
| 22 | export fn entry3(x: u8) void { |
| 23 | const u: U = .{ .a = @intCast(x) }; |
| 24 | switch (u) { |
| 25 | .{ .a = 0b00 }, .{ .a = 0b01 }, .{ .a = 0b10 }, .{ .a = 0b11 } => {}, |
| 26 | else => {}, |
| 27 | } |
| 28 | } |
| 29 | export fn entry4(x: u8) void { |
| 30 | const u: U = .{ .a = @intCast(x) }; |
| 31 | switch (u) { |
| 32 | .{ .a = 0b00 }, .{ .a = 0b01 }, .{ .a = 0b11 } => {}, |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | // error |
| 37 | // |
| 38 | // :8:14: error: unreachable else prong; all cases already handled |
| 39 | // :13:5: error: switch must handle all possibilities |
| 40 | // :26:14: error: unreachable else prong; all cases already handled |
| 41 | // :31:5: error: switch must handle all possibilities |