diff --git a/flang/lib/Lower/ConvertExprToHLFIR.cpp b/flang/lib/Lower/ConvertExprToHLFIR.cpp
--- a/flang/lib/Lower/ConvertExprToHLFIR.cpp
+++ b/flang/lib/Lower/ConvertExprToHLFIR.cpp
@@ -1743,10 +1743,40 @@
           attrs &&
           bitEnumContainsAny(attrs.getFlags(),
                              fir::FortranVariableFlagsEnum::allocatable);
-      auto rhs = gen(expr);
-      builder.create<hlfir::AssignOp>(loc, rhs, lhs, allowRealloc,
-                                      /*keep_lhs_length_if_realloc=*/false,
-                                      /*temporary_lhs=*/true);
+      hlfir::Entity rhs = gen(expr);
+      // If the component is allocatable, then we have to check
+      // whether the RHS value is allocatable or not.
+      // If it is not allocatable, then AssignOp can be used directly.
+      // If it is allocatable, then using AssignOp for unallocated RHS
+      // will cause illegal dereference. When an unallocated allocatable
+      // value is used to construct an allocatable component, the component
+      // must just stay unallocated.
+      if (!allowRealloc || !rhs.isMutableBox()) {
+        rhs = hlfir::loadTrivialScalar(loc, builder, rhs);
+        builder.create<hlfir::AssignOp>(loc, rhs, lhs, allowRealloc,
+                                        /*keep_lhs_length_if_realloc=*/false,
+                                        /*temporary_lhs=*/true);
+        continue;
+      }
+
+      auto [rhsExv, cleanup] =
+          hlfir::translateToExtendedValue(loc, builder, rhs);
+      assert(!cleanup && "unexpected cleanup");
+      auto *fromBox = rhsExv.getBoxOf<fir::MutableBoxValue>();
+      if (!fromBox)
+        fir::emitFatalError(loc, "allocatable entity could not be lowered "
+                                 "to mutable box");
+      mlir::Value isAlloc =
+          fir::factory::genIsAllocatedOrAssociatedTest(builder, loc, *fromBox);
+      builder.genIfThen(loc, isAlloc)
+          .genThen([&]() {
+            rhs = hlfir::loadTrivialScalar(loc, builder, rhs);
+            builder.create<hlfir::AssignOp>(
+                loc, rhs, lhs, allowRealloc,
+                /*keep_lhs_length_if_realloc=*/false,
+                /*temporary_lhs=*/true);
+          })
+          .end();
     }
 
     return varOp;
diff --git a/flang/runtime/assign.cpp b/flang/runtime/assign.cpp
--- a/flang/runtime/assign.cpp
+++ b/flang/runtime/assign.cpp
@@ -560,7 +560,18 @@
   // Initialize the "to" if it is of derived type that needs initialization.
   if (const DescriptorAddendum * addendum{to.Addendum()}) {
     if (const auto *derived{addendum->derivedType()}) {
-      if (!derived->noInitializationNeeded()) {
+      // Do not invoke the initialization, if the descriptor is unallocated.
+      // AssignTemporary() is used for component-by-component assignments,
+      // for example, for structure constructors. This means that the LHS
+      // may be an allocatable component with unallocated status.
+      // The initialization will just fail in this case. By skipping
+      // the initialization we let Assign() automatically allocate
+      // and initialize the component according to the RHS.
+      // So we only need to initialize the LHS here if it is allocated.
+      // Note that initializing already initialized entity has no visible
+      // effect, though, it is assumed that the compiler does not initialize
+      // the temporary and leaves the initialization to this runtime code.
+      if (!derived->noInitializationNeeded() && to.IsAllocated()) {
         if (ReturnError(terminator, Initialize(to, *derived, terminator)) !=
             StatOk) {
           return;
diff --git a/flang/test/Lower/HLFIR/structure-constructor.f90 b/flang/test/Lower/HLFIR/structure-constructor.f90
--- a/flang/test/Lower/HLFIR/structure-constructor.f90
+++ b/flang/test/Lower/HLFIR/structure-constructor.f90
@@ -194,7 +194,15 @@
 ! CHECK:           %[[VAL_16:.*]] = fir.convert %[[VAL_13]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
 ! CHECK:           %[[VAL_17:.*]] = fir.call @_FortranAInitialize(%[[VAL_15]], %[[VAL_16]], %[[VAL_14]]) fastmath<contract> : (!fir.box<none>, !fir.ref<i8>, i32) -> none
 ! CHECK:           %[[VAL_18:.*]] = hlfir.designate %[[VAL_11]]#0{"t5m"}   {fortran_attrs = #fir.var_attrs<allocatable>} : (!fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
-! CHECK:           hlfir.assign %[[VAL_10]]#0 to %[[VAL_18]] realloc temporary_lhs : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           %[[VAL_19:.*]] = fir.load %[[VAL_10]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           %[[VAL_20:.*]] = fir.box_addr %[[VAL_19]] : (!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>) -> !fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>
+! CHECK:           %[[VAL_21:.*]] = fir.convert %[[VAL_20]] : (!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>) -> i64
+! CHECK:           %[[VAL_22:.*]] = arith.constant 0 : i64
+! CHECK:           %[[VAL_23:.*]] = arith.cmpi ne, %[[VAL_21]], %[[VAL_22]] : i64
+! CHECK:           fir.if %[[VAL_23]] {
+! CHECK:             %[[VAL_24:.*]] = fir.load %[[VAL_10]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:             hlfir.assign %[[VAL_24]] to %[[VAL_18]] realloc temporary_lhs : !fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           }
 ! CHECK:           hlfir.assign %[[VAL_11]]#0 to %[[VAL_3]]#0 : !fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>, !fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>
 ! CHECK:           return
 ! CHECK:         }
@@ -243,43 +251,51 @@
 ! CHECK:           %[[VAL_33:.*]] = fir.convert %[[VAL_30]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
 ! CHECK:           %[[VAL_34:.*]] = fir.call @_FortranAInitialize(%[[VAL_32]], %[[VAL_33]], %[[VAL_31]]) fastmath<contract> : (!fir.box<none>, !fir.ref<i8>, i32) -> none
 ! CHECK:           %[[VAL_35:.*]] = hlfir.designate %[[VAL_28]]#0{"t5m"}   {fortran_attrs = #fir.var_attrs<allocatable>} : (!fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
-! CHECK:           hlfir.assign %[[VAL_19]]#0 to %[[VAL_35]] realloc temporary_lhs : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           %[[VAL_36:.*]] = fir.load %[[VAL_19]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           %[[VAL_37:.*]] = fir.box_addr %[[VAL_36]] : (!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>) -> !fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>
+! CHECK:           %[[VAL_38:.*]] = fir.convert %[[VAL_37]] : (!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>) -> i64
+! CHECK:           %[[VAL_39:.*]] = arith.constant 0 : i64
+! CHECK:           %[[VAL_40:.*]] = arith.cmpi ne, %[[VAL_38]], %[[VAL_39]] : i64
+! CHECK:           fir.if %[[VAL_40]] {
+! CHECK:             %[[VAL_41:.*]] = fir.load %[[VAL_19]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:             hlfir.assign %[[VAL_41]] to %[[VAL_35]] realloc temporary_lhs : !fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>>
+! CHECK:           }
 ! CHECK:           hlfir.assign %[[VAL_28]]#0 to %[[VAL_27]] temporary_lhs : !fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>, !fir.ref<!fir.type<_QMtypesTt5{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>}>>
-! CHECK:           %[[VAL_36:.*]] = arith.constant 1 : index
-! CHECK:           %[[VAL_37:.*]] = fir.shape %[[VAL_36]] : (index) -> !fir.shape<1>
-! CHECK:           %[[VAL_38:.*]] = hlfir.designate %[[VAL_20]]#0{"t6m"} <%[[VAL_37]]>   shape %[[VAL_37]] : (!fir.ref<!fir.type<_QMtypesTt6{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>,t6m:!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>}>>, !fir.shape<1>, !fir.shape<1>) -> !fir.ref<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>
-! CHECK:           %[[VAL_39:.*]] = arith.constant 1 : index
-! CHECK:           %[[VAL_40:.*]] = fir.allocmem !fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>> {bindc_name = ".tmp.arrayctor", uniq_name = ""}
-! CHECK:           %[[VAL_41:.*]] = fir.shape %[[VAL_39]] : (index) -> !fir.shape<1>
-! CHECK:           %[[VAL_42:.*]]:2 = hlfir.declare %[[VAL_40]](%[[VAL_41]]) {uniq_name = ".tmp.arrayctor"} : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.shape<1>) -> (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>)
-! CHECK:           %[[VAL_43:.*]] = fir.embox %[[VAL_42]]#1(%[[VAL_41]]) : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.shape<1>) -> !fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>
-! CHECK:           fir.store %[[VAL_43]] to %[[VAL_4]] : !fir.ref<!fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>>
-! CHECK:           %[[VAL_44:.*]] = arith.constant false
-! CHECK:           %[[VAL_45:.*]] = fir.convert %[[VAL_3]] : (!fir.ref<!fir.array<10xi64>>) -> !fir.llvm_ptr<i8>
-! CHECK:           %[[VAL_46:.*]] = arith.constant 80 : i32
-! CHECK:           %[[VAL_47:.*]] = fir.address_of(@_QQcl.{{.*}}) : !fir.ref<!fir.char<1,{{[0-9]*}}>>
-! CHECK:           %[[VAL_48:.*]] = arith.constant {{[0-9]*}} : i32
-! CHECK:           %[[VAL_49:.*]] = fir.convert %[[VAL_4]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>>) -> !fir.ref<!fir.box<none>>
-! CHECK:           %[[VAL_50:.*]] = fir.convert %[[VAL_47]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
-! CHECK:           %[[VAL_51:.*]] = fir.call @_FortranAInitArrayConstructorVector(%[[VAL_45]], %[[VAL_49]], %[[VAL_44]], %[[VAL_46]], %[[VAL_50]], %[[VAL_48]]) fastmath<contract> : (!fir.llvm_ptr<i8>, !fir.ref<!fir.box<none>>, i1, i32, !fir.ref<i8>, i32) -> none
-! CHECK:           %[[VAL_52:.*]]:2 = hlfir.declare %[[VAL_2]] {uniq_name = "ctor.temp"} : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, !fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>)
-! CHECK:           %[[VAL_53:.*]] = fir.embox %[[VAL_52]]#0 : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.box<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
-! CHECK:           %[[VAL_54:.*]] = fir.address_of(@_QQcl.{{.*}}) : !fir.ref<!fir.char<1,{{[0-9]*}}>>
-! CHECK:           %[[VAL_55:.*]] = arith.constant {{[0-9]*}} : i32
-! CHECK:           %[[VAL_56:.*]] = fir.convert %[[VAL_53]] : (!fir.box<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.box<none>
-! CHECK:           %[[VAL_57:.*]] = fir.convert %[[VAL_54]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
-! CHECK:           %[[VAL_58:.*]] = fir.call @_FortranAInitialize(%[[VAL_56]], %[[VAL_57]], %[[VAL_55]]) fastmath<contract> : (!fir.box<none>, !fir.ref<i8>, i32) -> none
-! CHECK:           %[[VAL_59:.*]] = arith.constant 4 : index
-! CHECK:           %[[VAL_60:.*]] = hlfir.designate %[[VAL_52]]#0{"c"}   typeparams %[[VAL_59]] : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, index) -> !fir.ref<!fir.char<1,4>>
-! CHECK:           %[[VAL_61:.*]] = arith.constant 4 : i64
-! CHECK:           %[[VAL_62:.*]] = hlfir.set_length %[[VAL_10]]#0 len %[[VAL_61]] : (!fir.ref<!fir.char<1,4>>, i64) -> !hlfir.expr<!fir.char<1,4>>
-! CHECK:           hlfir.assign %[[VAL_62]] to %[[VAL_60]] temporary_lhs : !hlfir.expr<!fir.char<1,4>>, !fir.ref<!fir.char<1,4>>
-! CHECK:           %[[VAL_63:.*]] = fir.convert %[[VAL_52]]#1 : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.llvm_ptr<i8>
-! CHECK:           %[[VAL_64:.*]] = fir.call @_FortranAPushArrayConstructorSimpleScalar(%[[VAL_45]], %[[VAL_63]]) fastmath<contract> : (!fir.llvm_ptr<i8>, !fir.llvm_ptr<i8>) -> none
-! CHECK:           %[[VAL_65:.*]] = arith.constant true
-! CHECK:           %[[VAL_66:.*]] = hlfir.as_expr %[[VAL_42]]#0 move %[[VAL_65]] : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, i1) -> !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
-! CHECK:           hlfir.assign %[[VAL_66]] to %[[VAL_38]] temporary_lhs : !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, !fir.ref<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>
+! CHECK:           %[[VAL_42:.*]] = arith.constant 1 : index
+! CHECK:           %[[VAL_43:.*]] = fir.shape %[[VAL_42]] : (index) -> !fir.shape<1>
+! CHECK:           %[[VAL_44:.*]] = hlfir.designate %[[VAL_20]]#0{"t6m"} <%[[VAL_43]]>   shape %[[VAL_43]] : (!fir.ref<!fir.type<_QMtypesTt6{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>,t6m:!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>}>>, !fir.shape<1>, !fir.shape<1>) -> !fir.ref<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>
+! CHECK:           %[[VAL_45:.*]] = arith.constant 1 : index
+! CHECK:           %[[VAL_46:.*]] = fir.allocmem !fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>> {bindc_name = ".tmp.arrayctor", uniq_name = ""}
+! CHECK:           %[[VAL_47:.*]] = fir.shape %[[VAL_45]] : (index) -> !fir.shape<1>
+! CHECK:           %[[VAL_48:.*]]:2 = hlfir.declare %[[VAL_46]](%[[VAL_47]]) {uniq_name = ".tmp.arrayctor"} : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.shape<1>) -> (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>)
+! CHECK:           %[[VAL_49:.*]] = fir.embox %[[VAL_48]]#1(%[[VAL_47]]) : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, !fir.shape<1>) -> !fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>
+! CHECK:           fir.store %[[VAL_49]] to %[[VAL_4]] : !fir.ref<!fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>>
+! CHECK:           %[[VAL_50:.*]] = arith.constant false
+! CHECK:           %[[VAL_51:.*]] = fir.convert %[[VAL_3]] : (!fir.ref<!fir.array<10xi64>>) -> !fir.llvm_ptr<i8>
+! CHECK:           %[[VAL_52:.*]] = arith.constant 80 : i32
+! CHECK:           %[[VAL_53:.*]] = fir.address_of(@_QQcl.{{.*}}) : !fir.ref<!fir.char<1,{{[0-9]*}}>>
+! CHECK:           %[[VAL_54:.*]] = arith.constant {{[0-9]*}} : i32
+! CHECK:           %[[VAL_55:.*]] = fir.convert %[[VAL_4]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>>>) -> !fir.ref<!fir.box<none>>
+! CHECK:           %[[VAL_56:.*]] = fir.convert %[[VAL_53]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
+! CHECK:           %[[VAL_57:.*]] = fir.call @_FortranAInitArrayConstructorVector(%[[VAL_51]], %[[VAL_55]], %[[VAL_50]], %[[VAL_52]], %[[VAL_56]], %[[VAL_54]]) fastmath<contract> : (!fir.llvm_ptr<i8>, !fir.ref<!fir.box<none>>, i1, i32, !fir.ref<i8>, i32) -> none
+! CHECK:           %[[VAL_58:.*]]:2 = hlfir.declare %[[VAL_2]] {uniq_name = "ctor.temp"} : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, !fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>)
+! CHECK:           %[[VAL_59:.*]] = fir.embox %[[VAL_58]]#0 : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.box<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
+! CHECK:           %[[VAL_60:.*]] = fir.address_of(@_QQcl.{{.*}}) : !fir.ref<!fir.char<1,{{[0-9]*}}>>
+! CHECK:           %[[VAL_61:.*]] = arith.constant {{[0-9]*}} : i32
+! CHECK:           %[[VAL_62:.*]] = fir.convert %[[VAL_59]] : (!fir.box<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.box<none>
+! CHECK:           %[[VAL_63:.*]] = fir.convert %[[VAL_60]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
+! CHECK:           %[[VAL_64:.*]] = fir.call @_FortranAInitialize(%[[VAL_62]], %[[VAL_63]], %[[VAL_61]]) fastmath<contract> : (!fir.box<none>, !fir.ref<i8>, i32) -> none
+! CHECK:           %[[VAL_65:.*]] = arith.constant 4 : index
+! CHECK:           %[[VAL_66:.*]] = hlfir.designate %[[VAL_58]]#0{"c"}   typeparams %[[VAL_65]] : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, index) -> !fir.ref<!fir.char<1,4>>
+! CHECK:           %[[VAL_67:.*]] = arith.constant 4 : i64
+! CHECK:           %[[VAL_68:.*]] = hlfir.set_length %[[VAL_10]]#0 len %[[VAL_67]] : (!fir.ref<!fir.char<1,4>>, i64) -> !hlfir.expr<!fir.char<1,4>>
+! CHECK:           hlfir.assign %[[VAL_68]] to %[[VAL_66]] temporary_lhs : !hlfir.expr<!fir.char<1,4>>, !fir.ref<!fir.char<1,4>>
+! CHECK:           %[[VAL_69:.*]] = fir.convert %[[VAL_58]]#1 : (!fir.ref<!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>) -> !fir.llvm_ptr<i8>
+! CHECK:           %[[VAL_70:.*]] = fir.call @_FortranAPushArrayConstructorSimpleScalar(%[[VAL_51]], %[[VAL_69]]) fastmath<contract> : (!fir.llvm_ptr<i8>, !fir.llvm_ptr<i8>) -> none
+! CHECK:           %[[VAL_71:.*]] = arith.constant true
+! CHECK:           %[[VAL_72:.*]] = hlfir.as_expr %[[VAL_48]]#0 move %[[VAL_71]] : (!fir.heap<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>, i1) -> !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
+! CHECK:           hlfir.assign %[[VAL_72]] to %[[VAL_44]] temporary_lhs : !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>, !fir.ref<!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>>
 ! CHECK:           hlfir.assign %[[VAL_20]]#0 to %[[VAL_12]]#0 : !fir.ref<!fir.type<_QMtypesTt6{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>,t6m:!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>}>>, !fir.ref<!fir.type<_QMtypesTt6{t5m:!fir.box<!fir.heap<!fir.array<?x!fir.type<_QMtypesTt4{c:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,2>>>>}>>>>,t6m:!fir.array<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>}>>
-! CHECK:           hlfir.destroy %[[VAL_66]] : !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
+! CHECK:           hlfir.destroy %[[VAL_72]] : !hlfir.expr<1x!fir.type<_QMtypesTt1{c:!fir.char<1,4>}>>
 ! CHECK:           return
 ! CHECK:         }