modernize-use-uncaught-exceptions¶
This check will warn on calls to std::uncaught_exception and replace them
with calls to std::uncaught_exceptions, since std::uncaught_exception
was deprecated in C++17.
Below are a few examples of what kind of occurrences will be found and what they will be replaced with.
#define MACRO1 std::uncaught_exception
#define MACRO2 std::uncaught_exception
int uncaught_exception() {
  return 0;
}
int main() {
  int res;
  res = uncaught_exception();
  // No warning, since it is not the deprecated function from namespace std
  res = MACRO2();
  // Warning, but will not be replaced
  res = std::uncaught_exception();
  // Warning and replaced
  using std::uncaught_exception;
  // Warning and replaced
  res = uncaught_exception();
  // Warning and replaced
}
After applying the fixes the code will look like the following:
#define MACRO1 std::uncaught_exception
#define MACRO2 std::uncaught_exception
int uncaught_exception() {
  return 0;
}
int main() {
  int res;
  res = uncaught_exception();
  res = MACRO2();
  res = std::uncaught_exceptions();
  using std::uncaught_exceptions;
  res = uncaught_exceptions();
}