From 878c5c3cdc7513418662d6ff77c61b63a1b2538a Mon Sep 17 00:00:00 2001
From: Isuru Fernando <isuruf@gmail.com>
Date: Mon, 13 Oct 2025 16:10:25 -0500
Subject: [PATCH 09/10] Workaround nvcc bug in message_lite.h

See https://github.com/protocolbuffers/protobuf/issues/21542

Patch by Samuel Benzaquen (sbenzaquen)
---
 src/google/protobuf/message_lite.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/google/protobuf/message_lite.h b/src/google/protobuf/message_lite.h
index c416114aa9..3994762f06 100644
--- a/src/google/protobuf/message_lite.h
+++ b/src/google/protobuf/message_lite.h
@@ -273,6 +273,12 @@ struct MessageTraitsImpl {
 template <typename T>
 using MessageTraits = decltype(MessageTraitsImpl::value<T>);
 
+#ifdef __CUDACC__
+struct EnumTraitsImpl {
+  template <typename T>
+  static std::enable_if_t<sizeof(T) != 0> value;
+};
+#else
 struct EnumTraitsImpl {
   struct Undefined;
   // We use an incomplete type to cause a compiler error if something tries to
@@ -282,6 +288,7 @@ struct EnumTraitsImpl {
   template <typename T>
   static std::enable_if_t<sizeof(T) != 0, Undefined> value;
 };
+#endif
 template <typename T>
 using EnumTraits = decltype(EnumTraitsImpl::value<T>);