diff --git a/flang/runtime/edit-input.cpp b/flang/runtime/edit-input.cpp
--- a/flang/runtime/edit-input.cpp
+++ b/flang/runtime/edit-input.cpp
@@ -137,7 +137,8 @@
   if (ScanNumericPrefix(io, edit, next, remaining)) {
     Put('-');
   }
-  if (!next) { // empty field means zero
+  if (next.value_or(' ') == ' ') { // empty/blank field means zero
+    remaining.reset();
     Put('0');
     return got;
   }