diff --git a/flang/include/flang/Semantics/symbol.h b/flang/include/flang/Semantics/symbol.h
--- a/flang/include/flang/Semantics/symbol.h
+++ b/flang/include/flang/Semantics/symbol.h
@@ -351,6 +351,10 @@
   MutableSymbolVector &objects() { return objects_; }
   const MutableSymbolVector &objects() const { return objects_; }
   void add_object(Symbol &object) { objects_.emplace_back(object); }
+  void replace_object(Symbol &object, unsigned index) {
+    CHECK(index < (unsigned)objects_.size());
+    objects_[index] = object;
+  }
   std::size_t alignment() const { return alignment_; }
   void set_alignment(std::size_t alignment) { alignment_ = alignment; }
 
diff --git a/flang/lib/Semantics/compute-offsets.cpp b/flang/lib/Semantics/compute-offsets.cpp
--- a/flang/lib/Semantics/compute-offsets.cpp
+++ b/flang/lib/Semantics/compute-offsets.cpp
@@ -156,7 +156,7 @@
     Symbol &symbol{*object};
     auto errorSite{
         commonBlock.name().empty() ? symbol.name() : commonBlock.name()};
-    if (std::size_t padding{DoSymbol(symbol)}) {
+    if (std::size_t padding{DoSymbol(symbol.GetUltimate())}) {
       context_.Say(errorSite,
           "COMMON block /%s/ requires %zd bytes of padding before '%s' for alignment"_port_en_US,
           commonBlock.name(), padding, symbol.name());
diff --git a/flang/lib/Semantics/resolve-directives.cpp b/flang/lib/Semantics/resolve-directives.cpp
--- a/flang/lib/Semantics/resolve-directives.cpp
+++ b/flang/lib/Semantics/resolve-directives.cpp
@@ -1677,7 +1677,9 @@
               // 2.15.3 When a named common block appears in a list, it has the
               // same meaning as if every explicit member of the common block
               // appeared in the list
-              for (auto &object : symbol->get<CommonBlockDetails>().objects()) {
+              auto &details{symbol->get<CommonBlockDetails>()};
+              unsigned index{0};
+              for (auto &object : details.objects()) {
                 if (auto *resolvedObject{
                         ResolveOmp(*object, ompFlag, currScope())}) {
                   if (dataCopyingAttributeFlags.test(ompFlag)) {
@@ -1685,7 +1687,9 @@
                   } else {
                     AddToContextObjectWithDSA(*resolvedObject, ompFlag);
                   }
+                  details.replace_object(*resolvedObject, index);
                 }
+                index++;
               }
             } else {
               context_.Say(name.source, // 2.15.3
diff --git a/flang/test/Semantics/OpenMP/omp-common-block.f90 b/flang/test/Semantics/OpenMP/omp-common-block.f90
new file mode 100644
--- /dev/null
+++ b/flang/test/Semantics/OpenMP/omp-common-block.f90
@@ -0,0 +1,18 @@
+! RUN: %flang_fc1 -fopenmp -fdebug-dump-symbols %s | FileCheck %s
+
+program main
+  !CHECK: a size=4 offset=0: ObjectEntity type: REAL(4)
+  !CHECK: b size=8 offset=4: ObjectEntity type: INTEGER(4) shape: 1_8:2_8
+  !CHECK: c size=4 offset=12: ObjectEntity type: REAL(4)
+  !CHECK: blk size=16 offset=0: CommonBlockDetails alignment=4: a b c
+  real :: a, c
+  integer :: b(2)
+  common /blk/ a, b, c
+  !$omp parallel private(/blk/)
+    !CHECK: OtherConstruct scope: size=0 alignment=1
+    !CHECK:   a (OmpPrivate): HostAssoc
+    !CHECK:   b (OmpPrivate): HostAssoc
+    !CHECK:   c (OmpPrivate): HostAssoc
+    call sub(a, b, c)
+  !$omp end parallel
+end program
diff --git a/flang/test/Semantics/OpenMP/omp-threadprivate04.f90 b/flang/test/Semantics/OpenMP/omp-threadprivate04.f90
--- a/flang/test/Semantics/OpenMP/omp-threadprivate04.f90
+++ b/flang/test/Semantics/OpenMP/omp-threadprivate04.f90
@@ -5,44 +5,45 @@
 
 program main
   integer :: i, N = 10
-  integer, save :: x
-  common /blk/ y
+  integer, save :: x1, x2, x3, x4, x5, x6, x7, x8, x9
+  common /blk1/ y1, /blk2/ y2, /blk3/ y3, /blk4/ y4, /blk5/ y5
 
-  !$omp threadprivate(x, /blk/)
+  !$omp threadprivate(x1, x2, x3, x4, x5, x6, x7, x8, x9)
+  !$omp threadprivate(/blk1/, /blk2/, /blk3/, /blk4/, /blk5/)
 
-  !$omp parallel num_threads(x)
+  !$omp parallel num_threads(x1)
   !$omp end parallel
 
-  !$omp single copyprivate(x, /blk/)
+  !$omp single copyprivate(x2, /blk1/)
   !$omp end single
 
-  !$omp do schedule(static, x)
+  !$omp do schedule(static, x3)
   do i = 1, N
-    y = x
+    y1 = x3
   end do
   !$omp end do
 
-  !$omp parallel copyin(x, /blk/)
+  !$omp parallel copyin(x4, /blk2/)
   !$omp end parallel
 
-  !$omp parallel if(x > 1)
+  !$omp parallel if(x5 > 1)
   !$omp end parallel
 
-  !$omp teams thread_limit(x)
+  !$omp teams thread_limit(x6)
   !$omp end teams
 
   !ERROR: A THREADPRIVATE variable cannot be in PRIVATE clause
   !ERROR: A THREADPRIVATE variable cannot be in PRIVATE clause
-  !$omp parallel private(x, /blk/)
+  !$omp parallel private(x7, /blk3/)
   !$omp end parallel
 
   !ERROR: A THREADPRIVATE variable cannot be in FIRSTPRIVATE clause
   !ERROR: A THREADPRIVATE variable cannot be in FIRSTPRIVATE clause
-  !$omp parallel firstprivate(x, /blk/)
+  !$omp parallel firstprivate(x8, /blk4/)
   !$omp end parallel
 
   !ERROR: A THREADPRIVATE variable cannot be in SHARED clause
   !ERROR: A THREADPRIVATE variable cannot be in SHARED clause
-  !$omp parallel shared(x, /blk/)
+  !$omp parallel shared(x9, /blk5/)
   !$omp end parallel
 end