Raise C++ version to 14 and fix ill-formed code that is considered by this new standard.

CMakeLists.txt

@@ -370,7 +370,7 @@ macro(ADD_C_COMPILER_FLAG_IF_AVAILABLE flag have)
 endmacro(ADD_C_COMPILER_FLAG_IF_AVAILABLE)
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-comment -Wno-reorder -Wno-unused-variable -Wtype-limits -std=c++11 -fno-strict-aliasing")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-comment -Wno-reorder -Wno-unused-variable -Wtype-limits -std=c++14 -fno-strict-aliasing")
 
   ADD_CXX_COMPILER_FLAG_IF_AVAILABLE("-Wno-unused-but-set-variable" HAVE_WNO_UNUSED_BUT_SET_VARIABLE)
 

lib/include/srsran/asn1/asn1_utils.h

@@ -286,7 +286,8 @@ public:
   using iterator       = T*;
   using const_iterator = const T*;
 
-  explicit bounded_array(uint32_t size_ = 0) : data_(), current_size(size_) {}
+  bounded_array() : data_(), current_size(0) {}
+  explicit bounded_array(uint32_t size_) : data_(), current_size(size_) {}
   static uint32_t capacity() { return MAX_N; }
   uint32_t        size() const { return current_size; }
   T&              operator[](uint32_t idx) { return data_[idx]; }
@@ -858,7 +859,8 @@ public:
   static const uint32_t lb = LB, ub = UB;
   static const bool     has_ext = ext, is_aligned = aligned;
 
-  explicit bitstring(uint32_t siz_ = lb) { resize(siz_); }
+  bitstring() { resize(lb); }
+  explicit bitstring(uint32_t siz_) { resize(siz_); }
   explicit bitstring(const std::string& s)
   {
     resize(s.size());

srsenb/src/phy/lte/cc_worker.cc

@@ -634,7 +634,7 @@ void cc_worker::ue::metrics_read(phy_metrics_t* metrics_)
   if (metrics_) {
     *metrics_ = metrics;
   }
-  bzero(&metrics, sizeof(phy_metrics_t));
+  metrics = {};
 }
 
 void cc_worker::ue::metrics_dl(uint32_t mcs)

srsenb/src/stack/rrc/rrc_mobility.cc

@@ -316,8 +316,7 @@ bool rrc::ue::rrc_mobility::start_ho_preparation(uint32_t target_eci,
     capitem.ue_category                                       = 4;
     capitem.pdcp_params.max_num_rohc_context_sessions_present = true;
     capitem.pdcp_params.max_num_rohc_context_sessions = asn1::rrc::pdcp_params_s::max_num_rohc_context_sessions_e_::cs2;
-    bzero(&capitem.pdcp_params.supported_rohc_profiles,
-          sizeof(asn1::rrc::rohc_profile_support_list_r15_s)); // TODO: why is it r15?
+    capitem.pdcp_params.supported_rohc_profiles       = {};
     capitem.phy_layer_params.ue_specific_ref_sigs_supported = false;
     capitem.phy_layer_params.ue_tx_ant_sel_supported        = false;
     capitem.rf_params.supported_band_list_eutra.resize(1);

srsue/src/ue.cc

@@ -331,7 +331,7 @@ void ue::start_plot()
 
 bool ue::get_metrics(ue_metrics_t* m)
 {
-  bzero(m, sizeof(ue_metrics_t));
+  *m = {};
   phy->get_metrics(srsran::srsran_rat_t::lte, &m->phy);
   phy->get_metrics(srsran::srsran_rat_t::nr, &m->phy_nr);
   radio->get_metrics(&m->rf);