Change comment as per code review
diff --git a/tensorflow/compiler/xla/service/hlo_parser.cc b/tensorflow/compiler/xla/service/hlo_parser.cc
index 140e22e..8d58ea1 100644
--- a/tensorflow/compiler/xla/service/hlo_parser.cc
+++ b/tensorflow/compiler/xla/service/hlo_parser.cc
@@ -636,7 +636,7 @@
     // the pool, which should not happen.
     if (root_node == nullptr) {
       LOG(FATAL) << "instruction " << root_name
-                 << " was marked as ROOT but the parser has not seen it before"; // abort()
+                 << " was marked as ROOT but the parser has not seen it before"; // LOG(FATAL) crashes the program by calling abort()
     }
     root = root_node->first;
   }