Commit 9c6d728b0c

Fri3dNstuff <102751849+Fri3dNstuff@users.noreply.github.com>
2025-01-26 19:23:34
std.meta: handle `comptime` fields in `hasUniqueRepresentation` (#22132)
1 parent 3179961
Changed files (1)
lib
lib/std/meta.zig
@@ -1208,6 +1208,7 @@ pub inline fn hasUniqueRepresentation(comptime T: type) bool {
             var sum_size = @as(usize, 0);
 
             inline for (info.fields) |field| {
+                if (field.is_comptime) continue;
                 if (!hasUniqueRepresentation(field.type)) return false;
                 sum_size += @sizeOf(field.type);
             }
@@ -1310,4 +1311,12 @@ test hasUniqueRepresentation {
 
     try testing.expect(hasUniqueRepresentation(@Vector(std.simd.suggestVectorLength(u8) orelse 1, u8)));
     try testing.expect(@sizeOf(@Vector(3, u8)) == 3 or !hasUniqueRepresentation(@Vector(3, u8)));
+
+    const StructWithComptimeFields = struct {
+        comptime should_be_ignored: u64 = 42,
+        comptime should_also_be_ignored: [*:0]const u8 = "hope you're having a good day :)",
+        field: u32,
+    };
+
+    try testing.expect(hasUniqueRepresentation(StructWithComptimeFields));
 }