The Care and Feeding of C++’s Dragons

The Discussion

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  No video block=(

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  Thank you Chandler for this amazing talk, and thanks to everyone who works on Clang. LLVM is my favorite toolchain, and the sanitizers saved my butt countless times!

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  int sum(const std::vector<int> &numbers) {
  int result = 0;
  for (std::vector<int>::const_iterator it = numbers.begin();
  it != numbers.end(); ++it) {
  result += *it;
  }
  return result;
  }
  
  Instead of the range-based for fix to help the compiler optimizer with 'numbers.end()'
  for (const auto &number : numbers) {
  result += number;
  }
  
  As an alternative could this also fix the problem?
  int sum(const std::vector<int> &numbers) {
  int result = 0;
  std::vector<int>::const_iterator it_end = numbers.end();
  for (std::vector<int>::const_iterator it = numbers.begin();
  it != it_end; ++it) {
  result += *it;
  }
  return result;
  }
  

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  @Steve: Yes, but the point was lots of people don't bother to do that.

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  I would love to know Chandler's recommendation for a 'Clang based' experimental sandpit. Even if it is Linux based. Any chance of getting a brief coding environment description from Chandler?

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  Really amazing talk Chandler. I'm going to using Clang and these utilities after this talk. Thank you :)

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  clang on Windows!
  
  Whole lot of awesome.

  C

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  This might be an off-topic question, but how is he able to travel the output of his programs with his cursor like he is in an editor?

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  He is using a program call tmux

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  Would be useful if you could run dynamic analysis alongside a debugger: break into debugger on invalid memory access. Just easier to understand the conditions under which the problem happens. Visual C++ has something like that and it's super useful.