diff --git a/compiler-rt/test/hwasan/TestCases/malloc-test.c b/compiler-rt/test/hwasan/TestCases/malloc-test.c
--- a/compiler-rt/test/hwasan/TestCases/malloc-test.c
+++ b/compiler-rt/test/hwasan/TestCases/malloc-test.c
@@ -11,6 +11,6 @@
   __hwasan_enable_allocator_tagging();
   char *a1 = (char*)malloc(0);
   assert(a1 != 0);
-  assert(__sanitizer_get_allocated_size(a1) == 0);
+  assert(__sanitizer_get_allocated_size(a1) == 1);
   free(a1);
 }
diff --git a/compiler-rt/test/hwasan/TestCases/new-test.cpp b/compiler-rt/test/hwasan/TestCases/new-test.cpp
--- a/compiler-rt/test/hwasan/TestCases/new-test.cpp
+++ b/compiler-rt/test/hwasan/TestCases/new-test.cpp
@@ -15,7 +15,7 @@
   size_t volatile n = 0;
   char *a1 = new char[n];
   assert(a1 != nullptr);
-  assert(__sanitizer_get_allocated_size(a1) == 0);
+  assert(__sanitizer_get_allocated_size(a1) == 1);
   delete[] a1;
 
 #if defined(__cpp_aligned_new) &&                                              \