Index: openmp/runtime/test/tasking/hidden_helper_task/capacity_nthreads.cpp
===================================================================
--- openmp/runtime/test/tasking/hidden_helper_task/capacity_nthreads.cpp
+++ openmp/runtime/test/tasking/hidden_helper_task/capacity_nthreads.cpp
@@ -4,6 +4,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <limits>
 #include <vector>
 
 int main(int argc, char *argv[]) {