libcxx/test/std/language.support/support.exception/uncaught/uncaught_exceptions.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: no-exceptions
  10
  11 // std::uncaught_exceptions() was introduced in the dylib on Mac OS 10.12
  12 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11}}
  13
  14 // However, std::uncaught_exceptions() gives the wrong answer in Mac OS 10.12
  15 // and 10.13, where it only gives 0 or 1. This was fixed later.
  16 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{12|13}}
  17
  18 // test uncaught_exceptions
  19
  20 #include <exception>
  21 #include <cassert>
  22
  23 #include "test_macros.h"
  24
  25 struct Uncaught {
  26     Uncaught(int depth) : d_(depth) {}
  27     ~Uncaught() { assert(std::uncaught_exceptions() == d_); }
  28     int d_;
  29     };
  30
  31 struct Outer {
  32     Outer(int depth) : d_(depth) {}
  33     ~Outer() {
  34     try {
  35         assert(std::uncaught_exceptions() == d_);
  36         Uncaught u(d_+1);
  37         throw 2;
  38     }
  39     catch (int) {}
  40     }
  41     int d_;
  42 };
  43
  44 int main(int, char**) {
  45     assert(std::uncaught_exceptions() == 0);
  46     {
  47     Outer o(0);
  48     }
  49
  50     assert(std::uncaught_exceptions() == 0);
  51     {
  52     try {
  53         Outer o(1);
  54         throw 1;
  55         }
  56     catch (int) {
  57         assert(std::uncaught_exceptions() == 0);
  58         }
  59     }
  60     assert(std::uncaught_exceptions() == 0);
  61
  62   return 0;
  63 }