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() gives the wrong answer in versions of
  12 // the dylib that don't contain 3a92ecc. Previously, it only returned
  13 // 0 or 1.
  14 // XFAIL: using-built-library-before-llvm-9
  15
  16 // test uncaught_exceptions
  17
  18 #include <exception>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22
  23 struct Uncaught {
  24     Uncaught(int depth) : d_(depth) {}
  25     ~Uncaught() { assert(std::uncaught_exceptions() == d_); }
  26     int d_;
  27     };
  28
  29 struct Outer {
  30     Outer(int depth) : d_(depth) {}
  31     ~Outer() {
  32     try {
  33         assert(std::uncaught_exceptions() == d_);
  34         Uncaught u(d_+1);
  35         throw 2;
  36     }
  37     catch (int) {}
  38     }
  39     int d_;
  40 };
  41
  42 int main(int, char**) {
  43     assert(std::uncaught_exceptions() == 0);
  44     {
  45     Outer o(0);
  46     }
  47
  48     assert(std::uncaught_exceptions() == 0);
  49     {
  50     try {
  51         Outer o(1);
  52         throw 1;
  53         }
  54     catch (int) {
  55         assert(std::uncaught_exceptions() == 0);
  56         }
  57     }
  58     assert(std::uncaught_exceptions() == 0);
  59
  60   return 0;
  61 }