diff --git a/clang/lib/DPCT/AnalysisInfo.cpp b/clang/lib/DPCT/AnalysisInfo.cpp
index e13d7925bb54..cd456943f3a2 100644
--- a/clang/lib/DPCT/AnalysisInfo.cpp
+++ b/clang/lib/DPCT/AnalysisInfo.cpp
@@ -2844,14 +2844,17 @@ MemVarInfo::MemVarInfo(unsigned Offset,
         if (DS1 && DS2 && DS1 == DS2) {
           IsAnonymousType = true;
           DeclStmtOfVarType = DS2;
-          auto Iter = AnonymousTypeDeclStmtMap.find(DS2);
+          const auto LocInfo = DpctGlobalInfo::getLocInfo(DS2->getBeginLoc());
+          const auto LocStr = LocInfo.first.getCanonicalPath().str() +
+                              std::to_string(LocInfo.second);
+          auto Iter = AnonymousTypeDeclStmtMap.find(LocStr);
           if (Iter != AnonymousTypeDeclStmtMap.end()) {
             LocalTypeName = "type_ct" + std::to_string(Iter->second);
           } else {
             LocalTypeName =
                 "type_ct" + std::to_string(AnonymousTypeDeclStmtMap.size() + 1);
             AnonymousTypeDeclStmtMap.insert(
-                std::make_pair(DS2, AnonymousTypeDeclStmtMap.size() + 1));
+                std::make_pair(LocStr, AnonymousTypeDeclStmtMap.size() + 1));
           }
         } else if (DS2) {
           DeclStmtOfVarType = DS2;
@@ -3298,7 +3301,7 @@ std::string MemVarInfo::getArgName() {
   return getName();
 }
 const std::string MemVarInfo::ExternVariableName = "dpct_local";
-std::unordered_map<const DeclStmt *, int> MemVarInfo::AnonymousTypeDeclStmtMap;
+std::unordered_map<std::string, int> MemVarInfo::AnonymousTypeDeclStmtMap;
 ///// class TextureTypeInfo /////
 TextureTypeInfo::TextureTypeInfo(std::string &&DataType, int TexType) {
   setDataTypeAndTexType(std::move(DataType), TexType);
diff --git a/clang/lib/DPCT/AnalysisInfo.h b/clang/lib/DPCT/AnalysisInfo.h
index b2712ab89942..920a33fe8714 100644
--- a/clang/lib/DPCT/AnalysisInfo.h
+++ b/clang/lib/DPCT/AnalysisInfo.h
@@ -1919,7 +1919,7 @@ class MemVarInfo : public VarInfo {
   const DeclStmt *DeclStmtOfVarType = nullptr;
   std::string LocalTypeName = "";
 
-  static std::unordered_map<const DeclStmt *, int> AnonymousTypeDeclStmtMap;
+  static std::unordered_map<std::string, int> AnonymousTypeDeclStmtMap;
   bool UsedBySymbolAPIFlag = false;
   bool UseHelperFuncFlag = true;
   bool UseDeviceGlobalFlag = false;
diff --git a/clang/test/dpct/shared_union_in_kernel/common.cuh b/clang/test/dpct/shared_union_in_kernel/common.cuh
new file mode 100644
index 000000000000..76ad4ee164fc
--- /dev/null
+++ b/clang/test/dpct/shared_union_in_kernel/common.cuh
@@ -0,0 +1,7 @@
+// CHECK: void f(uint8_t *shared_storage_ct1) {
+// CHECK-NEXT:   union type_ct1{ int x; };
+// CHECK-NEXT:   type_ct1 &shared_storage = *(type_ct1 *)shared_storage_ct1;
+// CHECK-NEXT: }
+__global__ void f() {
+  __shared__ union { int x; } shared_storage;
+}
diff --git a/clang/test/dpct/shared_union_in_kernel/compile_commands.json b/clang/test/dpct/shared_union_in_kernel/compile_commands.json
new file mode 100644
index 000000000000..f0acbfee9141
--- /dev/null
+++ b/clang/test/dpct/shared_union_in_kernel/compile_commands.json
@@ -0,0 +1,12 @@
+[
+  {
+    "command": "nvcc -c main.cu",
+    "directory": ".",
+    "file": "main.cu"
+  },
+  {
+    "command": "nvcc -c test.cu",
+    "directory": ".",
+    "file": "test.cu"
+  }
+]
diff --git a/clang/test/dpct/shared_union_in_kernel/main.cu b/clang/test/dpct/shared_union_in_kernel/main.cu
new file mode 100644
index 000000000000..e374c27aa98a
--- /dev/null
+++ b/clang/test/dpct/shared_union_in_kernel/main.cu
@@ -0,0 +1,8 @@
+// RUN: cp %S/* .
+// RUN: dpct --format-range=none -p=. -out-root=%T --cuda-include-path="%cuda-path/include" -- -x -std=c++14
+// RUN: FileCheck --input-file %T/common.dp.hpp --match-full-lines %S/common.cuh
+// RUN: %if build_lit %{icpx -c -fsycl %T/main.dp.cpp %T/test.dp.cpp %}
+
+#include "common.cuh"
+
+int main() { return 0; }
diff --git a/clang/test/dpct/shared_union_in_kernel/test.cu b/clang/test/dpct/shared_union_in_kernel/test.cu
new file mode 100644
index 000000000000..df1e6332a0af
--- /dev/null
+++ b/clang/test/dpct/shared_union_in_kernel/test.cu
@@ -0,0 +1,3 @@
+// RUN: echo "empty command"
+
+#include "common.cuh"