libstdc++-v3/testsuite/23_containers/unordered_set/pr115285.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // libstdc++/115285
   4
   5 #include <unordered_set>
   6 #include <string>
   7 #include <vector>
   8
   9 #include <testsuite_hooks.h>
  10
  11 class TrimmedStr : public std::string
  12 {
  13   static std::string trim_str(std::string const &str)
  14   {
  15     auto start = str.find_first_not_of(" \r\n\t");
  16
  17     return start == std::string::npos
  18       ? str
  19       : str.substr(start, str.find_last_not_of(" \r\n\t") - start + 1);
  20   }
  21
  22 public:
  23   TrimmedStr(std::string const &arg)
  24     : std::string{trim_str(arg)} {}
  25   TrimmedStr(char const *arg)
  26     : TrimmedStr{std::string{arg}} {}
  27 };
  28
  29 int main()
  30 {
  31   std::unordered_set<TrimmedStr, std::hash<std::string>, std::equal_to<std::string>>
  32     set_from_initializer_list{ "foo", "bar", " foo ", " bar " };
  33
  34   VERIFY( set_from_initializer_list.size() == 2 );
  35
  36   std::vector<std::string> args{ "foo", "bar", " foo ", " bar " };
  37   std::unordered_set<TrimmedStr, std::hash<std::string>, std::equal_to<std::string>>
  38     set_from_iterators;
  39   set_from_iterators.insert(args.begin(), args.end());
  40   VERIFY( set_from_iterators.size() == 2 );
  41 }