From 1eab2a4a80f2e7f0cb660300f6d3eb9994cf9b2f Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Tue, 4 Apr 2023 09:35:10 +0200
Subject: [PATCH] meta: fix constness detection for static functions in
 meta_type::invoke

---
 src/entt/meta/meta.hpp       | 2 +-
 test/entt/meta/meta_type.cpp | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/entt/meta/meta.hpp b/src/entt/meta/meta.hpp
index ac36ff3f2..c78249208 100644
--- a/src/entt/meta/meta.hpp
+++ b/src/entt/meta/meta.hpp
@@ -1389,7 +1389,7 @@ public:
     meta_any invoke(const id_type id, meta_handle instance, meta_any *const args, const size_type sz) const {
         if(node.details) {
             if(auto it = node.details->func.find(id); it != node.details->func.cend()) {
-                if(const auto *candidate = lookup(args, sz, (instance->data() == nullptr), [curr = &it->second]() mutable { return curr ? std::exchange(curr, curr->next.get()) : nullptr; }); candidate) {
+                if(const auto *candidate = lookup(args, sz, instance && (instance->data() == nullptr), [curr = &it->second]() mutable { return curr ? std::exchange(curr, curr->next.get()) : nullptr; }); candidate) {
                     return candidate->invoke(*ctx, meta_handle{*ctx, std::move(instance)}, args);
                 }
             }
diff --git a/test/entt/meta/meta_type.cpp b/test/entt/meta/meta_type.cpp
index adb6e7669..0fc7c376f 100644
--- a/test/entt/meta/meta_type.cpp
+++ b/test/entt/meta/meta_type.cpp
@@ -378,7 +378,10 @@ TEST_F(MetaType, Invoke) {
     clazz_t instance{};
 
     ASSERT_TRUE(type.invoke("member"_hs, instance));
-    ASSERT_FALSE(type.invoke("rebmem"_hs, {}));
+    ASSERT_FALSE(type.invoke("rebmem"_hs, instance));
+
+    ASSERT_TRUE(type.invoke("func"_hs, {}));
+    ASSERT_FALSE(type.invoke("cnuf"_hs, {}));
 }
 
 TEST_F(MetaType, InvokeFromBase) {