1 /* Test that throwing C++ exceptions works with the minimum stack size.
2 Copyright (C) 2018-2022 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
do_throw_exception()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))
class_with_destructor()42 class_with_destructor::class_with_destructor ()
43 {
44 }
45
46 __attribute__ ((noinline, noclone, weak))
~class_with_destructor()47 class_with_destructor::~class_with_destructor ()
48 {
49 }
50
51 __attribute__ ((noinline, noclone, weak))
52 void
function_with_destructed_object()53 function_with_destructed_object ()
54 {
55 class_with_destructor obj;
56 do_throw_exception ();
57 }
58
59 static void *
threadfunc(void * closure)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
do_test(void)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>
88