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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4. //#include <unistd.h>
  5.  
  6. int open() {
  7. 	return 42;
  8. }
  9.  
  10. void close(int handle) {}
  11.  
  12. struct Context {
  13. 	int handle;
  14. 	std::vector<std::string> errors;
  15. };
  16.  
  17. class File {
  18. 	Context &ctx_;
  19. public:
  20. 	File(Context &ctx) : ctx_(ctx)
  21. 	{
  22. 		try {
  23. 			ctx.handle = open();
  24. 		} catch(...) {
  25. 			ctx_.errors.push_back("Unable to open file");
  26. 		}		
  27. 	}
  28. 	~File() {
  29. 		try {
  30. 			close(ctx_.handle);
  31. 		} catch(...) {
  32. 			ctx_.errors.push_back("An error occured");
  33. 		}
  34. 	}
  35. };
  36.  
  37. int main() {
  38. 	Context ctx;
  39. 	{
  40. 		File f(ctx);
  41. 	}
  42. 	for (auto e : ctx.errors)
  43. 		std::cout << e << std::endl;
  44. 	return 0;
  45. }
Success #stdin #stdout 0s 3464KB
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https://ideone.com/4BYwQ5
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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