Second take to fix the breaking change in boost 1.86

include/restc-cpp/restc-cpp.h

@@ -57,6 +57,14 @@
  throw; /* required for Boost Coroutine! */ \
  } catch (...)
 
+#if BOOST_VERSION >= 108100
+// They changed the function signature. In boost 1.86 it broke the build.
+#define RESTC_CPP_SPAWN_TRAILER \
+ , boost::asio::detached
+#else
+#define RESTC_CPP_SPAWN_TRAILER
+#endif
+
 namespace restc_cpp {
 
 class RestClient;
@@ -421,7 +429,7 @@ class RestClient {
  prom->set_exception(std::current_exception());
  }
  done_handler.reset();
- }, boost::asio::detached);
+ } RESTC_CPP_SPAWN_TRAILER);
 
  return future;
  }

src/RestClientImpl.cpp

@@ -342,7 +342,7 @@ class RestClientImpl final : public RestClient {
  void Process(const prc_fn_t& fn) override {
  boost::asio::spawn(*io_service_,
  bind(&RestClientImpl::ProcessInWorker, this,
- placeholders::_1, fn, nullptr), boost::asio::detached);
+ placeholders::_1, fn, nullptr) RESTC_CPP_SPAWN_TRAILER);
  }
 
  future< void > ProcessWithPromise(const prc_fn_t& fn) override {
@@ -351,7 +351,7 @@ class RestClientImpl final : public RestClient {
 
  boost::asio::spawn(*io_service_,
  bind(&RestClientImpl::ProcessInWorker, this,
- placeholders::_1, fn, promise), boost::asio::detached);
+ placeholders::_1, fn, promise) RESTC_CPP_SPAWN_TRAILER);
 
  return future;
  }