diff --git a/openmp/runtime/src/kmp_barrier.cpp b/openmp/runtime/src/kmp_barrier.cpp
--- a/openmp/runtime/src/kmp_barrier.cpp
+++ b/openmp/runtime/src/kmp_barrier.cpp
@@ -300,7 +300,7 @@
   kmp_uint32 branch_factor = 1 << branch_bits;
   kmp_uint32 child;
   kmp_uint32 child_tid;
-  kmp_uint64 new_state;
+  kmp_uint64 new_state = 0;
 
   KA_TRACE(
       20, ("__kmp_tree_barrier_gather: T#%d(%d:%d) enter for barrier type %d\n",
@@ -873,7 +873,7 @@
   kmp_bstate_t *thr_bar = &this_thr->th.th_bar[bt].bb;
   kmp_uint32 nproc = this_thr->th.th_team_nproc;
   kmp_info_t **other_threads = team->t.t_threads;
-  kmp_uint64 new_state;
+  kmp_uint64 new_state = 0;
 
   int level = team->t.t_level;
   if (other_threads[0]
@@ -1629,6 +1629,7 @@
 void __kmp_end_split_barrier(enum barrier_type bt, int gtid) {
   KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(KMP_end_split_barrier);
   KMP_SET_THREAD_STATE_BLOCK(PLAIN_BARRIER);
+  KMP_DEBUG_ASSERT(bt < bs_last_barrier);
   int tid = __kmp_tid_from_gtid(gtid);
   kmp_info_t *this_thr = __kmp_threads[gtid];
   kmp_team_t *team = this_thr->th.th_team;
@@ -1670,6 +1671,9 @@
 void __kmp_join_barrier(int gtid) {
   KMP_TIME_PARTITIONED_BLOCK(OMP_join_barrier);
   KMP_SET_THREAD_STATE_BLOCK(FORK_JOIN_BARRIER);
+
+  KMP_DEBUG_ASSERT(__kmp_threads && __kmp_threads[gtid]);
+
   kmp_info_t *this_thr = __kmp_threads[gtid];
   kmp_team_t *team;
   kmp_uint nproc;
@@ -1706,7 +1710,6 @@
   KMP_MB();
 
   // Verify state
-  KMP_DEBUG_ASSERT(__kmp_threads && __kmp_threads[gtid]);
   KMP_DEBUG_ASSERT(TCR_PTR(this_thr->th.th_team));
   KMP_DEBUG_ASSERT(TCR_PTR(this_thr->th.th_root));
   KMP_DEBUG_ASSERT(this_thr == team->t.t_threads[tid]);
@@ -1931,6 +1934,7 @@
 #endif /* USE_ITT_BUILD && USE_ITT_NOTIFY */
 
 #ifdef KMP_DEBUG
+    KMP_DEBUG_ASSERT(team);
     kmp_info_t **other_threads = team->t.t_threads;
     int i;
 
@@ -2011,7 +2015,7 @@
     if (KMP_MASTER_TID(ds_tid) &&
         (ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait) ||
          ompt_callbacks.ompt_callback(ompt_callback_sync_region)))
-      codeptr = team->t.ompt_team_info.master_return_address;
+      codeptr = team ? team->t.ompt_team_info.master_return_address : NULL;
     if (ompt_enabled.ompt_callback_sync_region_wait) {
       ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)(
           ompt_sync_region_barrier_implicit, ompt_scope_end, NULL, task_data,
diff --git a/openmp/runtime/src/kmp_dispatch.cpp b/openmp/runtime/src/kmp_dispatch.cpp
--- a/openmp/runtime/src/kmp_dispatch.cpp
+++ b/openmp/runtime/src/kmp_dispatch.cpp
@@ -1847,6 +1847,8 @@
         "__kmp_dispatch_next_algorithm: T#%%d exit status:%%d p_last:%%d "
         "p_lb:%%%s p_ub:%%%s p_st:%%%s\n",
         traits_t<T>::spec, traits_t<T>::spec, traits_t<ST>::spec);
+    KMP_DEBUG_ASSERT(p_last);
+    KMP_DEBUG_ASSERT(p_st);
     KD_TRACE(10, (buff, gtid, status, *p_last, *p_lb, *p_ub, *p_st));
     __kmp_str_free(&buff);
   }
diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp
--- a/openmp/runtime/src/kmp_runtime.cpp
+++ b/openmp/runtime/src/kmp_runtime.cpp
@@ -4055,12 +4055,12 @@
   /* this_thr->th.th_info.ds.ds_gtid is setup in
      kmp_allocate_thread/create_worker.
      this_thr->th.th_serial_team is setup in __kmp_allocate_thread */
-  kmp_info_t *master = team->t.t_threads[0];
   KMP_DEBUG_ASSERT(this_thr != NULL);
   KMP_DEBUG_ASSERT(this_thr->th.th_serial_team);
   KMP_DEBUG_ASSERT(team);
   KMP_DEBUG_ASSERT(team->t.t_threads);
   KMP_DEBUG_ASSERT(team->t.t_dispatch);
+  kmp_info_t *master = team->t.t_threads[0];
   KMP_DEBUG_ASSERT(master);
   KMP_DEBUG_ASSERT(master->th.th_root);
 
@@ -5751,7 +5751,7 @@
   }
 
 #if OMPT_SUPPORT
-  ompt_data_t *thread_data;
+  ompt_data_t *thread_data = nullptr;
   if (ompt_enabled.enabled) {
     thread_data = &(this_thr->th.ompt_thread_info.thread_data);
     *thread_data = ompt_data_none;
diff --git a/openmp/runtime/src/kmp_sched.cpp b/openmp/runtime/src/kmp_sched.cpp
--- a/openmp/runtime/src/kmp_sched.cpp
+++ b/openmp/runtime/src/kmp_sched.cpp
@@ -167,6 +167,7 @@
                               "signed?<%s>, loc = %%s\n",
                               traits_t<T>::spec, traits_t<T>::spec,
                               traits_t<ST>::spec, traits_t<T>::spec);
+      check_loc(loc);
       KD_TRACE(100,
                (buff, *plastiter, *plower, *pupper, *pstride, loc->psource));
       __kmp_str_free(&buff);
diff --git a/openmp/runtime/src/kmp_settings.cpp b/openmp/runtime/src/kmp_settings.cpp
--- a/openmp/runtime/src/kmp_settings.cpp
+++ b/openmp/runtime/src/kmp_settings.cpp
@@ -1714,6 +1714,7 @@
         __kmp_str_buf_print(buffer, "   %s='",
                             __kmp_barrier_pattern_env_name[i]);
       }
+      KMP_DEBUG_ASSERT(j < bs_last_barrier && k < bs_last_barrier);
       __kmp_str_buf_print(buffer, "%s,%s'\n", __kmp_barrier_pattern_name[j],
                           __kmp_barrier_pattern_name[k]);
     }
diff --git a/openmp/runtime/src/kmp_tasking.cpp b/openmp/runtime/src/kmp_tasking.cpp
--- a/openmp/runtime/src/kmp_tasking.cpp
+++ b/openmp/runtime/src/kmp_tasking.cpp
@@ -1221,6 +1221,7 @@
                 gtid, loc_ref, *((kmp_int32 *)flags), sizeof_kmp_task_t,
                 sizeof_shareds, task_entry));
 
+  KMP_DEBUG_ASSERT(parent_task);
   if (parent_task->td_flags.final) {
     if (flags->merged_if0) {
     }
@@ -1682,10 +1683,8 @@
   if (UNLIKELY(ompt_enabled.enabled)) {
     parent = new_taskdata->td_parent;
     if (ompt_enabled.ompt_callback_task_create) {
-      ompt_data_t task_data = ompt_data_none;
       ompt_callbacks.ompt_callback(ompt_callback_task_create)(
-          parent ? &(parent->ompt_task_info.task_data) : &task_data,
-          parent ? &(parent->ompt_task_info.frame) : NULL,
+          &(parent->ompt_task_info.task_data), &(parent->ompt_task_info.frame),
           &(new_taskdata->ompt_task_info.task_data), ompt_task_explicit, 0,
           OMPT_GET_RETURN_ADDRESS(0));
     }
@@ -1782,10 +1781,9 @@
             OMPT_GET_FRAME_ADDRESS(0);
       }
       if (ompt_enabled.ompt_callback_task_create) {
-        ompt_data_t task_data = ompt_data_none;
         ompt_callbacks.ompt_callback(ompt_callback_task_create)(
-            parent ? &(parent->ompt_task_info.task_data) : &task_data,
-            parent ? &(parent->ompt_task_info.frame) : NULL,
+            &(parent->ompt_task_info.task_data),
+            &(parent->ompt_task_info.frame),
             &(new_taskdata->ompt_task_info.task_data),
             ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata), 0,
             OMPT_LOAD_RETURN_ADDRESS(gtid));
@@ -1845,10 +1843,8 @@
     if (!parent->ompt_task_info.frame.enter_frame.ptr)
       parent->ompt_task_info.frame.enter_frame.ptr = OMPT_GET_FRAME_ADDRESS(0);
     if (ompt_enabled.ompt_callback_task_create) {
-      ompt_data_t task_data = ompt_data_none;
       ompt_callbacks.ompt_callback(ompt_callback_task_create)(
-          parent ? &(parent->ompt_task_info.task_data) : &task_data,
-          parent ? &(parent->ompt_task_info.frame) : NULL,
+          &(parent->ompt_task_info.task_data), &(parent->ompt_task_info.frame),
           &(new_taskdata->ompt_task_info.task_data),
           ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata), 0,
           codeptr_ra);
@@ -1873,7 +1869,7 @@
 static kmp_int32 __kmpc_omp_taskwait_template(ident_t *loc_ref, kmp_int32 gtid,
                                               void *frame_address,
                                               void *return_address) {
-  kmp_taskdata_t *taskdata;
+  kmp_taskdata_t *taskdata = nullptr;
   kmp_info_t *thread;
   int thread_finished = FALSE;
   KMP_SET_THREAD_STATE_BLOCK(TASKWAIT);
@@ -2007,7 +2003,7 @@
 
 // __kmpc_omp_taskyield: switch to a different task
 kmp_int32 __kmpc_omp_taskyield(ident_t *loc_ref, kmp_int32 gtid, int end_part) {
-  kmp_taskdata_t *taskdata;
+  kmp_taskdata_t *taskdata = NULL;
   kmp_info_t *thread;
   int thread_finished = FALSE;
 
@@ -2533,7 +2529,7 @@
   kmp_team_t *team;
   ompt_data_t my_task_data;
   ompt_data_t my_parallel_data;
-  void *codeptr;
+  void *codeptr = nullptr;
   if (UNLIKELY(ompt_enabled.enabled)) {
     team = thread->th.th_team;
     my_task_data = taskdata->ompt_task_info.task_data;
@@ -3593,8 +3589,7 @@
     KA_TRACE(20, ("__kmp_task_team_setup: Primary T#%d created new task_team %p"
                   " for team %d at parity=%d\n",
                   __kmp_gtid_from_thread(this_thr),
-                  team->t.t_task_team[this_thr->th.th_task_state],
-                  ((team != NULL) ? team->t.t_id : -1),
+                  team->t.t_task_team[this_thr->th.th_task_state], team->t.t_id,
                   this_thr->th.th_task_state));
   }
 
@@ -3607,14 +3602,14 @@
   // for serialized teams.
   if (team->t.t_nproc > 1) {
     int other_team = 1 - this_thr->th.th_task_state;
+    KMP_DEBUG_ASSERT(other_team >= 0 && other_team < 2);
     if (team->t.t_task_team[other_team] == NULL) { // setup other team as well
       team->t.t_task_team[other_team] =
           __kmp_allocate_task_team(this_thr, team);
       KA_TRACE(20, ("__kmp_task_team_setup: Primary T#%d created second new "
                     "task_team %p for team %d at parity=%d\n",
                     __kmp_gtid_from_thread(this_thr),
-                    team->t.t_task_team[other_team],
-                    ((team != NULL) ? team->t.t_id : -1), other_team));
+                    team->t.t_task_team[other_team], team->t.t_id, other_team));
     } else { // Leave the old task team struct in place for the upcoming region;
       // adjust as needed
       kmp_task_team_t *task_team = team->t.t_task_team[other_team];
@@ -3632,8 +3627,7 @@
       KA_TRACE(20, ("__kmp_task_team_setup: Primary T#%d reset next task_team "
                     "%p for team %d at parity=%d\n",
                     __kmp_gtid_from_thread(this_thr),
-                    team->t.t_task_team[other_team],
-                    ((team != NULL) ? team->t.t_id : -1), other_team));
+                    team->t.t_task_team[other_team], team->t.t_id, other_team));
     }
   }
 
@@ -3676,7 +3670,7 @@
            ("__kmp_task_team_sync: Thread T#%d task team switched to task_team "
             "%p from Team #%d (parity=%d)\n",
             __kmp_gtid_from_thread(this_thr), this_thr->th.th_task_team,
-            ((team != NULL) ? team->t.t_id : -1), this_thr->th.th_task_state));
+            team->t.t_id, this_thr->th.th_task_state));
 }
 
 // __kmp_task_team_wait: Primary thread waits for outstanding tasks after the
diff --git a/openmp/runtime/src/kmp_version.cpp b/openmp/runtime/src/kmp_version.cpp
--- a/openmp/runtime/src/kmp_version.cpp
+++ b/openmp/runtime/src/kmp_version.cpp
@@ -51,6 +51,8 @@
 #define KMP_COMPILER "Intel(R) C++ Compiler 18.0"
 #elif __INTEL_COMPILER == 1900
 #define KMP_COMPILER "Intel(R) C++ Compiler 19.0"
+#elif __INTEL_COMPILER == 1910
+#define KMP_COMPILER "Intel(R) C++ Compiler 19.1"
 #elif __INTEL_COMPILER >= 9900
 #define KMP_COMPILER "Intel(R) C++ Compiler mainline"
 #endif
diff --git a/openmp/runtime/src/ompt-general.cpp b/openmp/runtime/src/ompt-general.cpp
--- a/openmp/runtime/src/ompt-general.cpp
+++ b/openmp/runtime/src/ompt-general.cpp
@@ -102,6 +102,14 @@
 
 static ompt_start_tool_result_t *ompt_start_tool_result = NULL;
 
+#if KMP_OS_WINDOWS
+static HMODULE ompt_tool_module = NULL;
+#define OMPT_DLCLOSE(Lib) FreeLibrary(Lib)
+#else
+static void *ompt_tool_module = NULL;
+#define OMPT_DLCLOSE(Lib) dlclose(Lib)
+#endif
+
 /*****************************************************************************
  * forward declarations
  ****************************************************************************/
@@ -314,12 +322,14 @@
             OMPT_VERBOSE_INIT_CONTINUED_PRINT("Success.\n");
             OMPT_VERBOSE_INIT_PRINT(
                 "Tool was started and is using the OMPT interface.\n");
+            ompt_tool_module = h;
             break;
           }
           OMPT_VERBOSE_INIT_CONTINUED_PRINT(
               "Found but not using the OMPT interface.\n");
           OMPT_VERBOSE_INIT_PRINT("Continuing search...\n");
         }
+        OMPT_DLCLOSE(h);
       }
       fname = __kmp_str_token(NULL, sep, &buf);
     }
@@ -495,6 +505,8 @@
     ompt_start_tool_result->finalize(&(ompt_start_tool_result->tool_data));
   }
 
+  if (ompt_tool_module)
+    OMPT_DLCLOSE(ompt_tool_module);
   memset(&ompt_enabled, 0, sizeof(ompt_enabled));
 }
 
@@ -675,6 +687,8 @@
 #else
   int i, count;
   int tmp_ids[ids_size];
+  for (int j = 0; j < ids_size; j++)
+    tmp_ids[j] = 0;
   if (!KMP_AFFINITY_CAPABLE())
     return 0;
   if (place_num < 0 || place_num >= (int)__kmp_affinity_num_masks)
diff --git a/openmp/runtime/src/ompt-specific.h b/openmp/runtime/src/ompt-specific.h
--- a/openmp/runtime/src/ompt-specific.h
+++ b/openmp/runtime/src/ompt-specific.h
@@ -103,7 +103,8 @@
 }
 
 inline void ompt_set_thread_state(kmp_info_t *thread, ompt_state_t state) {
-  thread->th.ompt_thread_info.state = state;
+  if (thread)
+    thread->th.ompt_thread_info.state = state;
 }
 
 inline const char *ompt_get_runtime_version() {