title: Undefined symbols for architecture x86_64: "std::terminate()", referenced from
body: <p>I got the error when i run <code>react-native run-ios</code> after upgraded RN to 0.26.0-rc. </p>
  
  <pre><code>Undefined symbols for architecture x86_64:
        "std::terminate()", referenced from:
        ___clang_call_terminate in libReact.a(RCTJSCExecutor.o)
    "___cxa_begin_catch", referenced from:
        ___clang_call_terminate in libReact.a(RCTJSCExecutor.o)
    "___gxx_personality_v0", referenced from:
        -[RCTJavaScriptContext initWithJSContext:onThread:] in libReact.a(RCTJSCExecutor.o)
        -[RCTJavaScriptContext init] in libReact.a(RCTJSCExecutor.o)
        -[RCTJavaScriptContext invalidate] in libReact.a(RCTJSCExecutor.o)
        _RCTNSErrorFromJSError in libReact.a(RCTJSCExecutor.o)
        +[RCTJSCExecutor runRunLoopThread] in libReact.a(RCTJSCExecutor.o)
        -[RCTJSCExecutor init] in libReact.a(RCTJSCExecutor.o)
        -[RCTJSCExecutor context] in libReact.a(RCTJSCExecutor.o)
        ...
  ld: symbol(s) not found for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>How can i fix it?</p>