diff --git a/example/ck_tile/01_fmha/bias.hpp b/example/ck_tile/01_fmha/bias.hpp
index 33f398cc2a9..b5262043843 100644
--- a/example/ck_tile/01_fmha/bias.hpp
+++ b/example/ck_tile/01_fmha/bias.hpp
@@ -106,7 +106,7 @@ struct bias_info
         return info;
     }
 
-    friend std::ostream& operator<<(std::ostream& os, const bias_info& bi)
+    friend std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os, const bias_info& bi)
     {
         bi.serialize(os);
         return os;
diff --git a/example/ck_tile/01_fmha/mask.hpp b/example/ck_tile/01_fmha/mask.hpp
index f85b811116b..c780bf7b6bd 100644
--- a/example/ck_tile/01_fmha/mask.hpp
+++ b/example/ck_tile/01_fmha/mask.hpp
@@ -191,7 +191,7 @@ struct mask_info
         return area;
     }
 
-    friend std::ostream& operator<<(std::ostream& os, const mask_info& mi)
+    friend std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os, const mask_info& mi)
     {
         mi.serialize(os);
         return os;
diff --git a/include/ck/host_utility/io.hpp b/include/ck/host_utility/io.hpp
index db45199b173..22d744ff159 100644
--- a/include/ck/host_utility/io.hpp
+++ b/include/ck/host_utility/io.hpp
@@ -13,7 +13,7 @@
 namespace ck {
 
 template <typename T>
-std::ostream& operator<<(std::ostream& os, const std::vector<T>& v)
+std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os, const std::vector<T>& v)
 {
     std::copy(std::begin(v), std::end(v), std::ostream_iterator<T>(os, " "));
     return os;
@@ -27,7 +27,8 @@ std::ostream& operator<<(std::ostream& os, const std::array<T, N>& v)
 }
 
 template <typename... Ts>
-std::ostream& operator<<(std::ostream& os, const TensorDescriptor<Ts...>& desc)
+std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                         const TensorDescriptor<Ts...>& desc)
 {
     constexpr index_t nDim = remove_cvref_t<decltype(desc)>::GetNumOfDimension();
 
diff --git a/include/ck/library/utility/convolution_parameter.hpp b/include/ck/library/utility/convolution_parameter.hpp
index 354b1120400..a25002409bd 100644
--- a/include/ck/library/utility/convolution_parameter.hpp
+++ b/include/ck/library/utility/convolution_parameter.hpp
@@ -110,4 +110,5 @@ ConvParam parse_conv_param(int num_dim_spatial, int arg_idx, char* const argv[])
 } // namespace utils
 } // namespace ck
 
-std::ostream& operator<<(std::ostream& os, const ck::utils::conv::ConvParam& p);
+std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                         const ck::utils::conv::ConvParam& p);
diff --git a/include/ck/library/utility/host_tensor.hpp b/include/ck/library/utility/host_tensor.hpp
index 1dda0a48639..b6558ee7f8b 100644
--- a/include/ck/library/utility/host_tensor.hpp
+++ b/include/ck/library/utility/host_tensor.hpp
@@ -26,7 +26,7 @@
 namespace ck {
 
 template <typename Range>
-std::ostream& LogRange(std::ostream& os, Range&& range, std::string delim)
+std::ostream& LogRange([[clang::lifetimebound]] std::ostream& os, Range&& range, std::string delim)
 {
     bool first = true;
     for(auto&& v : range)
@@ -580,8 +580,9 @@ struct HostTensorDescriptor
         return std::inner_product(iss.begin(), iss.end(), mStrides.begin(), std::size_t{0});
     }
 
-    friend std::ostream& operator<<(std::ostream& os, const HostTensorDescriptor& desc);
-    friend std::ostream& operator<<(std::ostream& os, ChosenLayout tag);
+    friend std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                                    const HostTensorDescriptor& desc);
+    friend std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os, ChosenLayout tag);
 
     private:
     std::vector<std::size_t> mLens;
diff --git a/include/ck/tensor_operation/gpu/device/tensor_layout.hpp b/include/ck/tensor_operation/gpu/device/tensor_layout.hpp
index 7018bbd251c..4e05ca50b5e 100644
--- a/include/ck/tensor_operation/gpu/device/tensor_layout.hpp
+++ b/include/ck/tensor_operation/gpu/device/tensor_layout.hpp
@@ -455,7 +455,7 @@ struct G_NDHW : public BaseConvolutionLayout
 template <
     typename Layout,
     typename std::enable_if<std::is_base_of<BaseTensorLayout, Layout>::value, bool>::type = false>
-std::ostream& operator<<(std::ostream& os, const Layout&)
+std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os, const Layout&)
 {
     os << Layout::name;
     return os;
diff --git a/include/ck/utility/amd_wave_read_first_lane.hpp b/include/ck/utility/amd_wave_read_first_lane.hpp
index 44259f0601f..4b64b76cc76 100644
--- a/include/ck/utility/amd_wave_read_first_lane.hpp
+++ b/include/ck/utility/amd_wave_read_first_lane.hpp
@@ -44,7 +44,8 @@ struct get_carrier<3>
 
         // replacement of host std::copy_n()
         template <typename InputIterator, typename Size, typename OutputIterator>
-        __device__ static OutputIterator copy_n(InputIterator from, Size size, OutputIterator to)
+        __device__ static OutputIterator
+        copy_n(InputIterator from, Size size, [[clang::lifetimebound]] OutputIterator to)
         {
             if(0 < size)
             {
diff --git a/include/ck/utility/pipeline_enum.hpp b/include/ck/utility/pipeline_enum.hpp
index 4421386f599..a224011a04f 100644
--- a/include/ck/utility/pipeline_enum.hpp
+++ b/include/ck/utility/pipeline_enum.hpp
@@ -25,7 +25,8 @@ enum struct PipelineVersion
 } // namespace ck
 
 #if !defined(__HIPCC_RTC__) || !defined(CK_CODE_GEN_RTC)
-inline std::ostream& operator<<(std::ostream& os, const ck::PipelineVersion& p)
+inline std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                                const ck::PipelineVersion& p)
 {
     switch(p)
     {
diff --git a/include/ck/utility/scheduler_enum.hpp b/include/ck/utility/scheduler_enum.hpp
index 0c4bfabaf3d..67c5c3b50a0 100644
--- a/include/ck/utility/scheduler_enum.hpp
+++ b/include/ck/utility/scheduler_enum.hpp
@@ -70,7 +70,8 @@ enum struct TailNumber
 } // namespace ck
 
 #if !defined(__HIPCC_RTC__) || !defined(CK_CODE_GEN_RTC)
-inline std::ostream& operator<<(std::ostream& os, const ck::LoopScheduler& s)
+inline std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                                const ck::LoopScheduler& s)
 {
     switch(s)
     {
diff --git a/include/ck/utility/tuple.hpp b/include/ck/utility/tuple.hpp
index 16575950307..94585459433 100644
--- a/include/ck/utility/tuple.hpp
+++ b/include/ck/utility/tuple.hpp
@@ -51,7 +51,7 @@ get_tuple_element_data_reference(const TupleElementKeyData<Key, Data>& x)
 // for write access of tuple element
 template <typename Key, typename Data>
 __host__ __device__ constexpr Data&
-get_tuple_element_data_reference(TupleElementKeyData<Key, Data>& x)
+get_tuple_element_data_reference([[clang::lifetimebound]] TupleElementKeyData<Key, Data>& x)
 {
     return x.mData;
 }
diff --git a/include/ck_tile/core/container/tuple.hpp b/include/ck_tile/core/container/tuple.hpp
index 7f8176d5ec3..79a063a7cf0 100644
--- a/include/ck_tile/core/container/tuple.hpp
+++ b/include/ck_tile/core/container/tuple.hpp
@@ -98,13 +98,14 @@ CK_TILE_HOST_DEVICE constexpr T getv(const tuple_object<I, T, true>&)
 }
 
 template <index_t I, class T>
-CK_TILE_HOST_DEVICE constexpr const T& getv(const tuple_object<I, T, false>& x)
+CK_TILE_HOST_DEVICE constexpr const T&
+getv([[clang::lifetimebound]] const tuple_object<I, T, false>& x)
 {
     return x.element;
 }
 
 template <index_t I, class T>
-CK_TILE_HOST_DEVICE constexpr T& getv(tuple_object<I, T, false>& x)
+CK_TILE_HOST_DEVICE constexpr T& getv([[clang::lifetimebound]] tuple_object<I, T, false>& x)
 {
     return x.element;
 }
@@ -292,7 +293,7 @@ struct tuple : impl::tuple_base<make_index_sequence<sizeof...(T)>, T...>
     //template <typename Tx> CK_TILE_HOST_DEVICE constexpr decltype(auto) get_as(index_t i) const             { TP_COM_(); return reinterpret_cast<const tuple_array<Tx, size()>&>(*this).at(i); }
     template <typename Tx, index_t I> CK_TILE_HOST_DEVICE constexpr decltype(auto) get_as(number<I>)        { TP_COM_(); return reinterpret_cast<tuple_array<Tx, size()>&>(*this).at(number<I>{}); }
     template <typename Tx, index_t I> CK_TILE_HOST_DEVICE constexpr decltype(auto) get_as(number<I>) const  { TP_COM_(); return reinterpret_cast<const tuple_array<Tx, size()>&>(*this).at(number<I>{}); }
-    
+
     // template <typename Tx> CK_TILE_HOST_DEVICE constexpr void set_as(index_t i, const Tx & x)               { TP_COM_(); reinterpret_cast<tuple_array<Tx, size()>&>(*this).at(i) = x; }
     template <typename Tx, index_t I> CK_TILE_HOST_DEVICE constexpr void set_as(number<I>, const Tx & x)    { TP_COM_(); reinterpret_cast<tuple_array<Tx, size()>&>(*this).at(number<I>{}) = x; }
 
diff --git a/include/ck_tile/ops/gemm/pipeline/gemm_pipeline_ag_bg_cr_scheduler.hpp b/include/ck_tile/ops/gemm/pipeline/gemm_pipeline_ag_bg_cr_scheduler.hpp
index 957cf7ab8f3..987704e4336 100644
--- a/include/ck_tile/ops/gemm/pipeline/gemm_pipeline_ag_bg_cr_scheduler.hpp
+++ b/include/ck_tile/ops/gemm/pipeline/gemm_pipeline_ag_bg_cr_scheduler.hpp
@@ -41,7 +41,8 @@ enum struct TailNumber
 
 } // namespace ck_tile
 
-inline std::ostream& operator<<(std::ostream& os, const ck_tile::GemmPipelineScheduler& s)
+inline std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                                const ck_tile::GemmPipelineScheduler& s)
 {
     switch(s)
     {
@@ -53,7 +54,8 @@ inline std::ostream& operator<<(std::ostream& os, const ck_tile::GemmPipelineSch
     return os;
 }
 
-inline std::ostream& operator<<(std::ostream& os, const ck_tile::TailNumber& s)
+inline std::ostream& operator<<([[clang::lifetimebound]] std::ostream& os,
+                                const ck_tile::TailNumber& s)
 {
     switch(s)
     {