libcxxabi/test/test_aux_runtime_op_array_new.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 // ___cxa_throw_bad_array_new_length is re-exported from libc++ only starting
  12 // in macosx 10.15
  13 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
  14
  15 #include <cxxabi.h>
  16 #include <new>
  17
  18 //  If the expression passed to operator new[] would result in an overflow, the
  19 //  allocation function is not called, and a std::bad_array_new_length exception
  20 //  is thrown instead (5.3.4p7).
  21 bool bad_array_new_length_test() {
  22     try {
  23       // We test this directly because Clang does not currently codegen the
  24       // correct call to __cxa_bad_array_new_length, so this test would result
  25       // in passing -1 to ::operator new[], which would then throw a
  26       // std::bad_alloc, causing the test to fail.
  27       __cxxabiv1::__cxa_throw_bad_array_new_length();
  28     } catch ( const std::bad_array_new_length &banl ) {
  29       return true;
  30     }
  31     return false;
  32 }
  33
  34 int main(int, char**) {
  35     int ret_val = 0;
  36
  37     if ( !bad_array_new_length_test ()) {
  38         ret_val = 1;
  39     }
  40
  41     return ret_val;
  42 }