nptl/tst-minstack-throw.cc

   1 /* Test that throwing C++ exceptions works with the minimum stack size.
   2    Copyright (C) 2018-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <stdexcept>
  20
  21 #include <limits.h>
  22 #include <string.h>
  23 #include <support/check.h>
  24 #include <support/xthread.h>
  25
  26 /* Throw a std::runtime_exception.  */
  27 __attribute__ ((noinline, noclone, weak))
  28 void
  29 do_throw_exception ()
  30 {
  31   throw std::runtime_error ("test exception");
  32 }
  33
  34 /* Class with a destructor, to trigger unwind handling.  */
  35 struct class_with_destructor
  36 {
  37   class_with_destructor ();
  38   ~class_with_destructor ();
  39 };
  40
  41 __attribute__ ((noinline, noclone, weak))
  42 class_with_destructor::class_with_destructor ()
  43 {
  44 }
  45
  46 __attribute__ ((noinline, noclone, weak))
  47 class_with_destructor::~class_with_destructor ()
  48 {
  49 }
  50
  51 __attribute__ ((noinline, noclone, weak))
  52 void
  53 function_with_destructed_object ()
  54 {
  55   class_with_destructor obj;
  56   do_throw_exception ();
  57 }
  58
  59 static void *
  60 threadfunc (void *closure)
  61 {
  62   try
  63     {
  64       function_with_destructed_object ();
  65       FAIL_EXIT1 ("no exception thrown");
  66     }
  67   catch (std::exception &e)
  68     {
  69       TEST_COMPARE (strcmp (e.what (), "test exception"), 0);
  70       return reinterpret_cast<void *> (threadfunc);
  71     }
  72   FAIL_EXIT1 ("no exception caught");
  73 }
  74
  75 static int
  76 do_test (void)
  77 {
  78   pthread_attr_t attr;
  79   xpthread_attr_init (&attr);
  80   xpthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
  81   pthread_t thr = xpthread_create (&attr, threadfunc, NULL);
  82   TEST_VERIFY (xpthread_join (thr) == threadfunc);
  83   xpthread_attr_destroy (&attr);
  84   return 0;
  85 }
  86
  87 #include <support/test-driver.c>