[wasm] Fix CFI failures due to Wasm threads.

test/cctest/wasm/wasm-run-utils.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WASM_RUN_UTILS_H
 #define WASM_RUN_UTILS_H
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 688 matching lines @@
       int32_t result = runner.Call<void*, void*, void*, void*, void*>(
           &p0, &p1, &p2, &p3, &return_value);
       CHECK_EQ(WASM_WRAPPER_RETURN_VALUE, result);
       return return_value;
     }
   }
 
   ReturnType CallInterpreter(Vector<WasmVal> args) {
     CHECK_EQ(args.length(),
              static_cast<int>(compiler_.function_->sig->parameter_count()));
-    WasmInterpreter::Thread& thread = interpreter()->GetThread(0);
-    thread.Reset();
-    thread.PushFrame(compiler_.function_, args.start());
-    if (thread.Run() == WasmInterpreter::FINISHED) {
-      WasmVal val = thread.GetReturnValue();
+    WasmInterpreter::Thread* thread = interpreter()->GetThread(0);
+    thread->Reset();
+    thread->PushFrame(compiler_.function_, args.start());
+    if (thread->Run() == WasmInterpreter::FINISHED) {
+      WasmVal val = thread->GetReturnValue();
       return val.to<ReturnType>();
-    } else if (thread.state() == WasmInterpreter::TRAPPED) {
+    } else if (thread->state() == WasmInterpreter::TRAPPED) {
       // TODO(titzer): return the correct trap code
       int64_t result = 0xdeadbeefdeadbeef;
       return static_cast<ReturnType>(result);
     } else {
       // TODO(titzer): falling off end
       ReturnType val = 0;
       return val;
     }
   }
 
@@ skipping 29 matching lines @@
 // interpreter.
 #define WASM_EXEC_TEST(name)                                               \
   void RunWasm_##name(WasmExecutionMode execution_mode);                   \
   TEST(RunWasmCompiled_##name) { RunWasm_##name(kExecuteCompiled); }       \
   TEST(RunWasmInterpreted_##name) { RunWasm_##name(kExecuteInterpreted); } \
   void RunWasm_##name(WasmExecutionMode execution_mode)
 
 }  // namespace
 
 #endif