From 54abf68f1ec5193cd8985656c299f387a19545c8 Mon Sep 17 00:00:00 2001
From: Rye <rye@alchemyviewer.org>
Date: Sun, 30 Nov 2025 12:15:22 -0500
Subject: #5078 Replace boost::hof::invocable with c++17 std::is_invocable

Signed-off-by: Rye <rye@alchemyviewer.org>
---
 indra/llcommon/lleventdispatcher.h | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/indra/llcommon/lleventdispatcher.h b/indra/llcommon/lleventdispatcher.h
index 4c3c0f3414..27cf4c1974 100644
--- a/indra/llcommon/lleventdispatcher.h
+++ b/indra/llcommon/lleventdispatcher.h
@@ -35,7 +35,6 @@
 #include <boost/fiber/fss.hpp>
 #include <boost/function_types/is_member_function_pointer.hpp>
 #include <boost/function_types/is_nonmember_callable_builtin.hpp>
-#include <boost/hof/is_invocable.hpp> // until C++17, when we get std::is_invocable
 #include <boost/iterator/transform_iterator.hpp>
 #include <functional>               // std::function
 #include <memory>                   // std::unique_ptr
@@ -99,7 +98,7 @@ public:
 
     template <typename CALLABLE,
               typename=typename std::enable_if<
-                  boost::hof::is_invocable<CALLABLE, LLSD>::value
+                  std::is_invocable<CALLABLE, LLSD>::value
              >::type>
     void add(const std::string& name,
              const std::string& desc,
@@ -295,9 +294,8 @@ public:
      * converted to the corresponding parameter type using LLSDParam.
      */
     template <typename CALLABLE,
-              typename=typename std::enable_if<
-                  ! boost::hof::is_invocable<CALLABLE, LLSD>()
-             >::type>
+              typename=typename std::enable_if_t<
+                  ! std::is_invocable<CALLABLE, LLSD>()>>
     void add(const std::string& name,
              const std::string& desc,
              CALLABLE&& f)
@@ -338,7 +336,7 @@ public:
     template<typename Function,
              typename = typename std::enable_if<
                  boost::function_types::is_nonmember_callable_builtin<Function>::value &&
-                 ! boost::hof::is_invocable<Function, LLSD>::value
+                 ! std::is_invocable<Function, LLSD>::value
              >::type>
     void add(const std::string& name, const std::string& desc, Function f,
              const LLSD& params, const LLSD& defaults=LLSD());
-- 
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