diff --git a/develop/singles/headers/meta.hpp/meta_all.hpp b/develop/singles/headers/meta.hpp/meta_all.hpp
index 6c9d38c..a0faeac 100644
--- a/develop/singles/headers/meta.hpp/meta_all.hpp
+++ b/develop/singles/headers/meta.hpp/meta_all.hpp
@@ -161,6 +161,17 @@
 
 #define META_HPP_DETAIL_IGNORE_OVERRIDE_WARNINGS_POP() META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_POP()
 
+//
+//
+//
+
+#define META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_PUSH() \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_PUSH() \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNING("-Wunknown-warning-option") \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNING("-Wsign-conversion")
+
+#define META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_POP() META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_POP()
+
 namespace meta_hpp::detail
 {
     template < typename Enum >
@@ -9014,7 +9025,10 @@ namespace meta_hpp::detail
 namespace meta_hpp::detail
 {
     template < typename T >
-        requires requires(const T& v) { uvalue{*v}; }
+        requires requires(const T& v) {
+            sizeof(*v);
+            uvalue{*v};
+        }
     struct deref_traits<T> {
         uvalue operator()(const T& v) const {
             return uvalue{*v};
@@ -9036,13 +9050,20 @@ namespace meta_hpp::detail
 
 namespace meta_hpp::detail
 {
+    META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_PUSH()
+
     template < typename T >
-        requires requires(const T& v, std::size_t i) { uvalue{v[i]}; }
+        requires requires(const T& v, std::size_t i) {
+            sizeof(v[i]);
+            uvalue{v[i]};
+        }
     struct index_traits<T> {
         uvalue operator()(const T& v, std::size_t i) const {
             return uvalue{v[i]};
         }
     };
+
+    META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_POP()
 }
 
 namespace meta_hpp::detail
diff --git a/develop/untests/meta_issues/random_issue_3.cpp b/develop/untests/meta_issues/random_issue_3.cpp
index 91c2460..d79cbf0 100644
--- a/develop/untests/meta_issues/random_issue_3.cpp
+++ b/develop/untests/meta_issues/random_issue_3.cpp
@@ -34,7 +34,7 @@ TEST_CASE("meta/meta_issues/random/3") {
 
     {
         meta::uvalue v{&int_func};
-        CHECK(v.has_deref_op());
+        CHECK_FALSE(v.has_deref_op());
         CHECK(v.get_type() == meta::resolve_type<int(*)()>());
         CHECK((v.as<decltype(&int_func)>() == &int_func));
     }
diff --git a/headers/meta.hpp/meta_base/base.hpp b/headers/meta.hpp/meta_base/base.hpp
index b70fe05..034472b 100644
--- a/headers/meta.hpp/meta_base/base.hpp
+++ b/headers/meta.hpp/meta_base/base.hpp
@@ -161,3 +161,14 @@
     META_HPP_DETAIL_CLANG_IGNORE_WARNING("-Wsuggest-override")
 
 #define META_HPP_DETAIL_IGNORE_OVERRIDE_WARNINGS_POP() META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_POP()
+
+//
+//
+//
+
+#define META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_PUSH() \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_PUSH() \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNING("-Wunknown-warning-option") \
+    META_HPP_DETAIL_CLANG_IGNORE_WARNING("-Wsign-conversion")
+
+#define META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_POP() META_HPP_DETAIL_CLANG_IGNORE_WARNINGS_POP()
diff --git a/headers/meta.hpp/meta_detail/value_traits/deref_traits.hpp b/headers/meta.hpp/meta_detail/value_traits/deref_traits.hpp
index 2e626f8..4471ef6 100644
--- a/headers/meta.hpp/meta_detail/value_traits/deref_traits.hpp
+++ b/headers/meta.hpp/meta_detail/value_traits/deref_traits.hpp
@@ -24,7 +24,10 @@ namespace meta_hpp::detail
 namespace meta_hpp::detail
 {
     template < typename T >
-        requires requires(const T& v) { uvalue{*v}; }
+        requires requires(const T& v) {
+            sizeof(*v);
+            uvalue{*v};
+        }
     struct deref_traits<T> {
         uvalue operator()(const T& v) const {
             return uvalue{*v};
diff --git a/headers/meta.hpp/meta_detail/value_traits/index_traits.hpp b/headers/meta.hpp/meta_detail/value_traits/index_traits.hpp
index 52507f6..e59e6bf 100644
--- a/headers/meta.hpp/meta_detail/value_traits/index_traits.hpp
+++ b/headers/meta.hpp/meta_detail/value_traits/index_traits.hpp
@@ -23,11 +23,18 @@ namespace meta_hpp::detail
 
 namespace meta_hpp::detail
 {
+    META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_PUSH()
+
     template < typename T >
-        requires requires(const T& v, std::size_t i) { uvalue{v[i]}; }
+        requires requires(const T& v, std::size_t i) {
+            sizeof(v[i]);
+            uvalue{v[i]};
+        }
     struct index_traits<T> {
         uvalue operator()(const T& v, std::size_t i) const {
             return uvalue{v[i]};
         }
     };
+
+    META_HPP_DETAIL_IGNORE_SIGN_CONVERSION_WARNINGS_POP()
 }