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  1. #include <iostream>
  2.  
  3. using std::cout;
  4.  
  5. struct Test {
  6.     operator bool() const {
  7.         return true;
  8.     }
  9. };
  10.  
  11. int main(int argc, char** argv) {
  12.     Test test;
  13.  
  14.     if (test["wut"])
  15.         cout << "Success (test[\"wut\"])\n";
  16.  
  17.     if (test["a"])
  18.         cout << "unreachable\n";
  19.  
  20.     if (test[""])
  21.         cout << "UB\n";
  22.  
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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Success (test["wut"])
https://ideone.com/ZktvkR
language:
C++14 (clang 8.0)
created:
10 days ago
visibility:
public

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