nvcc-protobuf-fix.patch

   1 From 878c5c3cdc7513418662d6ff77c61b63a1b2538a Mon Sep 17 00:00:00 2001
   2 From: Isuru Fernando <isuruf@gmail.com>
   3 Date: Mon, 13 Oct 2025 16:10:25 -0500
   4 Subject: [PATCH 09/10] Workaround nvcc bug in message_lite.h
   5
   6 See https://github.com/protocolbuffers/protobuf/issues/21542
   7
   8 Patch by Samuel Benzaquen (sbenzaquen)
   9 ---
  10  src/google/protobuf/message_lite.h | 7 +++++++
  11  1 file changed, 7 insertions(+)
  12
  13 diff --git a/src/google/protobuf/message_lite.h b/src/google/protobuf/message_lite.h
  14 index c416114aa9..3994762f06 100644
  15 --- a/src/google/protobuf/message_lite.h
  16 +++ b/src/google/protobuf/message_lite.h
  17 @@ -273,6 +273,12 @@ struct MessageTraitsImpl {
  18  template <typename T>
  19  using MessageTraits = decltype(MessageTraitsImpl::value<T>);
  20
  21 +#ifdef __CUDACC__
  22 +struct EnumTraitsImpl {
  23 +  template <typename T>
  24 +  static std::enable_if_t<sizeof(T) != 0> value;
  25 +};
  26 +#else
  27  struct EnumTraitsImpl {
  28    struct Undefined;
  29    // We use an incomplete type to cause a compiler error if something tries to
  30 @@ -282,6 +288,7 @@ struct EnumTraitsImpl {
  31    template <typename T>
  32    static std::enable_if_t<sizeof(T) != 0, Undefined> value;
  33  };
  34 +#endif
  35  template <typename T>
  36  using EnumTraits = decltype(EnumTraitsImpl::value<T>);
  37