title: Why clang's llvm version is 10.0.0, but the latest llvm version is 7.0.0？
body: <p>My clang version is <code>Apple LLVM version 10.0.0 (clang-1000.11.45.5)</code>, but the latest llvm version is 7.0.0, why?</p>
  
  <pre class="lang-sh prettyprint-override"><code>l:tmp apple$ clang++ --version
  Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  Target: x86_64-apple-darwin18.2.0
  Thread model: posix
  InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/N4R6I.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/N4R6I.png" alt="enter image description here"></a></p>