Use assembly instead of C array literals to link the core snapshot into the VM.

runtime/bin/run_vm_tests.cc

Index: runtime/bin/run_vm_tests.cc
diff --git a/runtime/bin/run_vm_tests.cc b/runtime/bin/run_vm_tests.cc
index ddb8a4e37bb1846b32cc68cb8dade34fbce15b64..103fede8f86396548ea326c36eeb45e9000d7873 100644
--- a/runtime/bin/run_vm_tests.cc
+++ b/runtime/bin/run_vm_tests.cc
@@ -14,6 +14,12 @@
 #include "vm/dart.h"
 #include "vm/unit_test.h"
 
+extern "C" {
+extern const uint8_t kDartVmSnapshotData[];
+extern const uint8_t kDartVmSnapshotInstructions[];
+extern const uint8_t kDartCoreIsolateSnapshotData[];
+extern const uint8_t kDartCoreIsolateSnapshotInstructions[];
+}
 
 // TODO(iposva, asiva): This is a placeholder for the real unittest framework.
 namespace dart {
@@ -21,10 +27,16 @@ namespace dart {
 // Defined in vm/os_thread_win.cc
 extern bool private_flag_windows_run_tls_destructors;
 
-// vm_snapshot_data_buffer points to a snapshot for the vm isolate if we
-// link in a snapshot otherwise it is initialized to NULL.
-extern const uint8_t* bin::vm_snapshot_data;
-extern const uint8_t* bin::vm_snapshot_instructions;
+// Snapshot pieces when we link in a snapshot.
+#if defined(DART_NO_SNAPSHOT)
+#error "run_vm_tests must be built with a snapshot"
+#else
+const uint8_t* bin::vm_snapshot_data = kDartVmSnapshotData;
+const uint8_t* bin::vm_snapshot_instructions = kDartVmSnapshotInstructions;
+const uint8_t* bin::core_isolate_snapshot_data = kDartCoreIsolateSnapshotData;
+const uint8_t* bin::core_isolate_snapshot_instructions =
+    kDartCoreIsolateSnapshotInstructions;
+#endif
 
 // Only run tests that match the filter string. The default does not match any
 // tests.