Fix -Wshorten-64-to-32 in test-assembler-arm64.cc

test/cctest/test-assembler-arm64.cc

Index: test/cctest/test-assembler-arm64.cc
diff --git a/test/cctest/test-assembler-arm64.cc b/test/cctest/test-assembler-arm64.cc
index 1728a9c7e71cdf2f949c1e94de5d5921f53e79d7..41b1d7cbbb758ca57f642a647be843ff9db13e41 100644
--- a/test/cctest/test-assembler-arm64.cc
+++ b/test/cctest/test-assembler-arm64.cc
@@ -173,15 +173,15 @@ static void InitializeVM() {
 
 #else  // ifdef USE_SIMULATOR.
 // Run the test on real hardware or models.
-#define SETUP_SIZE(buf_size)                                   \
-  Isolate* isolate = CcTest::i_isolate();                      \
-  HandleScope scope(isolate);                                  \
-  CHECK(isolate != NULL);                                      \
-  size_t actual_size;                                          \
-  byte* buf = static_cast<byte*>(                              \
-      v8::base::OS::Allocate(buf_size, &actual_size, true));   \
-  MacroAssembler masm(isolate, buf, actual_size,               \
-                      v8::internal::CodeObjectRequired::kYes); \
+#define SETUP_SIZE(buf_size)                                            \
+  Isolate* isolate = CcTest::i_isolate();                               \
+  HandleScope scope(isolate);                                           \
+  CHECK(isolate != NULL);                                               \
+  size_t actual_size;                                                   \
+  byte* buf = static_cast<byte*>(                                       \
+      v8::base::OS::Allocate(buf_size, &actual_size, true));            \
+  MacroAssembler masm(isolate, buf, static_cast<unsigned>(actual_size), \
+                      v8::internal::CodeObjectRequired::kYes);          \
   RegisterDump core;
 
 #define RESET()                                                                \