diff --git a/flang/include/flang/Runtime/iostat.h b/flang/include/flang/Runtime/iostat.h
--- a/flang/include/flang/Runtime/iostat.h
+++ b/flang/include/flang/Runtime/iostat.h
@@ -74,6 +74,7 @@
   IostatBadWaitUnit,
   IostatBOZInputOverflow,
   IostatIntegerInputOverflow,
+  IostatRealInputOverflow,
 };
 
 const char *IostatErrorString(int);
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
@@ -428,6 +428,9 @@
   io.HandleRelativePosition(p - str);
   // Set FP exception flags
   if (converted.flags != decimal::ConversionResultFlags::Exact) {
+    if (converted.flags & decimal::ConversionResultFlags::Overflow) {
+      return false; // let slow path deal with it
+    }
     RaiseFPExceptions(converted.flags);
   }
   return true;
@@ -505,6 +508,10 @@
       converted.binary;
   // Set FP exception flags
   if (converted.flags != decimal::ConversionResultFlags::Exact) {
+    if (converted.flags & decimal::ConversionResultFlags::Overflow) {
+      io.GetIoErrorHandler().SignalError(IostatRealInputOverflow);
+      return false;
+    }
     RaiseFPExceptions(converted.flags);
   }
   return true;
diff --git a/flang/runtime/iostat.cpp b/flang/runtime/iostat.cpp
--- a/flang/runtime/iostat.cpp
+++ b/flang/runtime/iostat.cpp
@@ -92,6 +92,8 @@
     return "B/O/Z input value overflows variable";
   case IostatIntegerInputOverflow:
     return "Integer input value overflows variable";
+  case IostatRealInputOverflow:
+    return "Real or complex input value overflows type";
   default:
     return nullptr;
   }