From 434c9fe4d79d3513bd36aeaf2f8a90dd28f7cb37 Mon Sep 17 00:00:00 2001
From: Ben Burkert <ben@benburkert.com>
Date: Sat, 8 Aug 2026 20:43:16 -0400
Subject: [PATCH] asn1: replace use of deprecated lang.Type.Enum API

The API for std.lang.Type changed in PR #35234, but the ASN.1 tag
encoder is using the old API. Update the check for an exhaustive enum
for the new API, and add a test that exercises this prong of the
encoder.
---
 lib/std/crypto/codecs/asn1.zig             |  2 +-
 lib/std/crypto/codecs/asn1/der/Encoder.zig | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/lib/std/crypto/codecs/asn1.zig b/lib/std/crypto/codecs/asn1.zig
index 68110155122c38418078aea1ebe433c106aafa3a..cd5e1195833bd12064969b362ce2f7bbaf517217 100644
--- a/lib/std/crypto/codecs/asn1.zig
+++ b/lib/std/crypto/codecs/asn1.zig
@@ -162,7 +162,7 @@ pub const Tag = struct {
             .int => return universal(.integer, false),
             .@"enum" => |e| {
                 if (@hasDecl(T, "oids")) return Oid.asn1_tag;
-                return universal(if (e.is_exhaustive) .enumerated else .integer, false);
+                return universal(if (e.mode == .exhaustive) .enumerated else .integer, false);
             },
             .optional => |o| return fromZig(o.child),
             .null => return universal(.null, false),
diff --git a/lib/std/crypto/codecs/asn1/der/Encoder.zig b/lib/std/crypto/codecs/asn1/der/Encoder.zig
index f3e58ea7a5e9cf7665335f95150c5ce17a60c059..16aa189f8f09332a27676bfe3fbca25c49327533 100644
--- a/lib/std/crypto/codecs/asn1/der/Encoder.zig
+++ b/lib/std/crypto/codecs/asn1/der/Encoder.zig
@@ -21,6 +21,26 @@ pub fn any(self: *Encoder, val: anytype) !void {
     try self.anyTag(Tag.fromZig(T), val);
 }
 
+test any {
+    const Enum = enum(u8) {
+        x = 0,
+    };
+
+    try checkAnyEncoding(u16, 0, &.{ 0x02, 0x01, 0x00 });
+    try checkAnyEncoding(Enum, .x, &.{ 0x0a, 0x01, 0x00 });
+}
+
+fn checkAnyEncoding(T: type, value: T, expected: []const u8) !void {
+    var encoder: @This() = .init(std.testing.allocator);
+    defer encoder.deinit();
+
+    try encoder.any(value);
+    const encoded = try encoder.buffer.toOwnedSlice();
+    defer std.testing.allocator.free(encoded);
+
+    try std.testing.expectEqualSlices(u8, expected, encoded);
+}
+
 fn anyTag(self: *Encoder, tag_: Tag, val: anytype) !void {
     const T = @TypeOf(val);
     if (std.meta.hasFn(T, "encodeDer")) return try val.encodeDer(self);
-- 
2.54.0