Commit db75a8781b
Changed files (1)
lib
std
lib/std/meta.zig
@@ -1200,6 +1200,8 @@ pub inline fn hasUniqueRepresentation(comptime T: type) bool {
.Array => |info| hasUniqueRepresentation(info.child),
.Struct => |info| {
+ if (info.layout == .@"packed") return @sizeOf(T) * 8 == @bitSizeOf(T);
+
var sum_size = @as(usize, 0);
inline for (info.fields) |field| {
@@ -1245,6 +1247,19 @@ test hasUniqueRepresentation {
try testing.expect(!hasUniqueRepresentation(TestStruct5));
+ const TestStruct6 = packed struct(u8) {
+ @"0": bool,
+ @"1": bool,
+ @"2": bool,
+ @"3": bool,
+ @"4": bool,
+ @"5": bool,
+ @"6": bool,
+ @"7": bool,
+ };
+
+ try testing.expect(hasUniqueRepresentation(TestStruct6));
+
const TestUnion1 = packed union {
a: u32,
b: u16,