1 files changed, 3 insertions, 3 deletions
diff --git a/flang-rt/lib/runtime/external-unit.cpp b/flang-rt/lib/runtime/external-unit.cpp
index 42441e59d9bb..63a93c12eec5 100644
--- a/flang-rt/lib/runtime/external-unit.cpp
+++ b/flang-rt/lib/runtime/external-unit.cpp
@@ -122,7 +122,7 @@ bool ExternalFileUnit::OpenUnit(common::optional<OpenStatus> status,
   bool impliedClose{false};
   if (IsConnected()) {
     bool isSamePath{newPath.get() && path() && pathLength() == newPathLength &&
-        std::memcmp(path(), newPath.get(), newPathLength) == 0};
+        runtime::memcmp(path(), newPath.get(), newPathLength) == 0};
     if (status && *status != OpenStatus::Old && isSamePath) {
       handler.SignalError("OPEN statement for connected unit may not have "
                           "explicit STATUS= other than 'OLD'");
@@ -202,8 +202,8 @@ bool ExternalFileUnit::OpenAnonymousUnit(common::optional<OpenStatus> status,
   std::size_t pathMaxLen{32};
   auto path{SizedNew<char>{handler}(pathMaxLen)};
   std::snprintf(path.get(), pathMaxLen, "fort.%d", unitNumber_);
-  OpenUnit(status, action, position, std::move(path), std::strlen(path.get()),
-      convert, handler);
+  OpenUnit(status, action, position, std::move(path),
+      runtime::strlen(path.get()), convert, handler);
   return IsConnected();
 }