diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
@@ -690,6 +690,123 @@
   TestCombinedAllocator<Allocator64Dynamic>();
 }
 
+static bool use1 = false;
+
+template <class A1, class A2>
+class DoubleAllocator {
+  A1 a1;
+  A2 a2;
+
+ public:
+  class DoubleAllocatorCache {
+    typename A1::AllocatorCache a1;
+    typename A2::AllocatorCache a2;
+
+   public:
+    void Init(AllocatorGlobalStats *s) {
+      if (use1)
+        return a1.Init(s);
+      else
+        return a2.Init(s);
+    }
+    void *Allocate(DoubleAllocator *allocator, uptr class_id) {
+      if (use1)
+        return a1.Allocate(&allocator->a1, class_id);
+      else
+        return a2.Allocate(&allocator->a2, class_id);
+    }
+
+    void Deallocate(DoubleAllocator *allocator, uptr class_id, void *p) {
+      if (use1)
+        return a1.Deallocate(&allocator->a1, class_id, p);
+      else
+        return a2.Deallocate(&allocator->a2, class_id, p);
+    }
+
+    void Drain(DoubleAllocator *allocator) {
+      if (use1)
+        return a1.Drain(&allocator->a1);
+      else
+        return a2.Drain(&allocator->a2);
+    }
+
+    void Destroy(DoubleAllocator *allocator, AllocatorGlobalStats *s) {
+      if (use1)
+        return a1.Destroy(&allocator->a1, s);
+      else
+        return a2.Destroy(&allocator->a2, s);
+    }
+  };
+
+  using MapUnmapCallback = Allocator32Compact::MapUnmapCallback;
+  using AddressSpaceView = Allocator32Compact::AddressSpaceView;
+  using AllocatorCache = DoubleAllocatorCache;
+
+  void Init(s32 release_to_os_interval_ms) {
+    if (use1)
+      return a1.Init(release_to_os_interval_ms);
+    else
+      return a2.Init(release_to_os_interval_ms);
+  }
+
+  static bool CanAllocate(uptr size, uptr alignment) {
+    if (use1)
+      return A1::CanAllocate(size, alignment);
+    else
+      return A2::CanAllocate(size, alignment);
+  }
+
+  static uptr ClassID(uptr size) {
+    if (use1)
+      return A1::ClassID(size);
+    else
+      return A2::ClassID(size);
+  }
+
+  bool PointerIsMine(const void *p) {
+    if (use1)
+      return a1.PointerIsMine(p);
+    else
+      return a2.PointerIsMine(p);
+  }
+
+  void *GetMetaData(const void *p) {
+    if (use1)
+      return a1.GetMetaData(p);
+    else
+      return a2.GetMetaData(p);
+  }
+
+  uptr GetSizeClass(const void *p) {
+    if (use1)
+      return a1.GetSizeClass(p);
+    else
+      return a2.GetSizeClass(p);
+  }
+
+  void ForEachChunk(ForEachChunkCallback callback, void *arg) {
+    if (use1)
+      return a1.ForEachChunk(callback, arg);
+    else
+      return a2.ForEachChunk(callback, arg);
+  }
+
+  void TestOnlyUnmap() {
+    if (use1)
+      return a1.TestOnlyUnmap();
+    else
+      return a2.TestOnlyUnmap();
+  }
+};
+
+TEST(SanitizerCommon, CombinedDoubleAllocator) {
+  TestCombinedAllocator<
+      DoubleAllocator<Allocator32Compact, Allocator64Compact>>();
+  use1 = true;
+  TestCombinedAllocator<
+      DoubleAllocator<Allocator32Compact, Allocator64Compact>>();
+}
+
 #if !SANITIZER_ANDROID
 TEST(SanitizerCommon, CombinedAllocator64Compact) {
   TestCombinedAllocator<Allocator64Compact>();