Index: test/asan/CMakeLists.txt
===================================================================
--- test/asan/CMakeLists.txt
+++ test/asan/CMakeLists.txt
@@ -18,10 +18,10 @@
 endif()
 
 macro(get_bits_for_arch arch bits)
-  if (${arch} MATCHES "i386|arm|mips|mipsel")
-    set(${bits} 32)
-  elseif (${arch} MATCHES "x86_64|powerpc64|powerpc64le|aarch64|mips64|mips64el|s390x")
+  if (${arch} MATCHES "x86_64|powerpc64|powerpc64le|aarch64|arm64|mips64|mips64el|s390x")
     set(${bits} 64)
+  elseif (${arch} MATCHES "i386|arm|mips|mipsel")
+    set(${bits} 32)
   else()
     message(FATAL_ERROR "Unknown target architecture: ${arch}")
   endif()