Add checks before pointer dereferencing

This change adds checks before dereferencing a pointer returned from a
function.

Differential Revision: https://reviews.llvm.org/D62224

llvm-svn: 362111

diff --git a/openmp/runtime/src/ompt-specific.cpp b/openmp/runtime/src/ompt-specific.cpp
index 99c4b6118cbd9a283c34be58bfa18765b1fbb36c..63153d274efb36c9d4ee209d1d5ebbe7fca632fd 100644 (file)
--- a/openmp/runtime/src/ompt-specific.cpp
+++ b/openmp/runtime/src/ompt-specific.cpp
@@ -210,7 +210,8 @@ ompt_data_t *__ompt_get_thread_data_internal() {
 void __ompt_thread_assign_wait_id(void *variable) {
   kmp_info_t *ti = ompt_get_thread();
 
-  ti->th.ompt_thread_info.wait_id = (ompt_wait_id_t)(uintptr_t)variable;
+  if (ti)
+    ti->th.ompt_thread_info.wait_id = (ompt_wait_id_t)(uintptr_t)variable;
 }
 
 int __ompt_get_state_internal(ompt_wait_id_t *omp_wait_id) {
@@ -432,6 +433,9 @@ int __ompt_get_task_memory_internal(void **addr, size_t *size, int blocknum) {
     return 0; // support only a single block
 
   kmp_info_t *thr = ompt_get_thread();
+  if (!thr)
+    return 0;
+
   kmp_taskdata_t *taskdata = thr->th.th_current_task;
   kmp_task_t *task = KMP_TASKDATA_TO_TASK(taskdata);