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#include <cassert>
#include <string>

namespace my {
struct string : std::string {
  explicit string(const char *msg,
                  const std::string::allocator_type &alloc = std::string::allocator_type{}) noexcept
  try : std::string(msg, alloc) {} catch(...) {
    assert(false && extern void log_message(const char *);
    log_message("std::string constructor threw an exception");
    std::terminate();
  }
  // ...
};
}
 
static const my::string global("...");

int main() {
  // ...
}