Index: flang/lib/Semantics/expression.cpp
===================================================================
--- flang/lib/Semantics/expression.cpp
+++ flang/lib/Semantics/expression.cpp
@@ -1510,8 +1510,8 @@
     return std::nullopt;
   }
   bool NeedLength() const {
-    return !explicitType_ && type_ &&
-        type_->category() == TypeCategory::Character && !LengthIfGood();
+    return type_ && type_->category() == TypeCategory::Character &&
+        !LengthIfGood();
   }
   void Push(MaybeExpr &&);
   void Add(const parser::AcValue::Triplet &);
Index: flang/test/Semantics/array-constr-len.f90
===================================================================
--- flang/test/Semantics/array-constr-len.f90
+++ flang/test/Semantics/array-constr-len.f90
@@ -10,5 +10,6 @@
   print *, [(s(1:j),j=1,0)]
   print *, [(s(1:1),j=1,0)] ! ok
   print *, [character(2)::(s(1:n),j=1,0)] ! ok
-  print *, [character(n)::(s(1:n),j=1,0)] ! ok
+  !ERROR: Array constructor implied DO loop has no iterations and indeterminate character length
+  print *, [character(n)::(s(1:n),j=1,0)]
 end