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1 | // 2003-05-03 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org> | |
2 | // | |
3 | // Copyright (C) 2003-2020 Free Software Foundation, Inc. | |
4 | // | |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | // { dg-do run } | |
21 | // { dg-options "-pthread" } | |
22 | // { dg-require-effective-target pthread } | |
23 | ||
24 | #include <ext/rope> | |
25 | #include <cstring> | |
26 | #include <pthread.h> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | const int max_thread_count = 4; | |
30 | const int max_loop_count = 10000; | |
31 | ||
32 | typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type; | |
33 | rope_type foo2; | |
34 | rope_type foo4; | |
35 | ||
36 | void* thread_main(void *) | |
37 | { | |
38 | // To see a problem with gcc 3.3 and before, set a break point here. | |
39 | // Single step through c_str implementation, call sched_yield after | |
40 | // capture of NULL __old_c_string in any thread. Single step | |
41 | // through another thread past that same point. Now, one thread | |
42 | // will receive a bad pointer return. Adding dummy sched_yield | |
43 | // should never change program semantics under POSIX threads. | |
44 | const char* data4 = foo4.c_str(); | |
45 | ||
46 | // Please note that the memory leak in the rope implementation with | |
47 | // this test case, existed before and after fixing this bug... | |
48 | VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") ); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | int | |
53 | main() | |
54 | { | |
55 | pthread_t tid[max_thread_count]; | |
56 | ||
57 | #if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500 | |
58 | pthread_setconcurrency (max_thread_count); | |
59 | #endif | |
60 | ||
61 | rope_type foo; | |
62 | foo += "bar"; | |
63 | foo += "baz"; | |
64 | foo += "bongle"; | |
65 | const char* data = foo.c_str(); | |
66 | VERIFY( !std::strcmp (data, "barbazbongle") ); | |
67 | ||
68 | const char* data2; | |
69 | { | |
70 | foo2 += "bar2"; | |
71 | foo2 += "baz2"; | |
72 | foo2 += "bongle2"; | |
73 | data2 = foo2.c_str(); | |
74 | VERIFY( !std::strcmp (data2, "bar2baz2bongle2") ); | |
75 | } | |
76 | ||
77 | rope_type foo3 ("hello"); | |
78 | const char* data3 = foo3.c_str(); | |
79 | VERIFY( !std::strcmp (data3, "hello") ); | |
80 | ||
81 | for (int j = 0; j < max_loop_count; j++) | |
82 | { | |
83 | foo4 = foo; | |
84 | foo4 += foo3; | |
85 | foo4 += foo3; | |
86 | foo4 += foo3; | |
87 | ||
88 | for (int i = 0; i < max_thread_count; i++) | |
89 | pthread_create (&tid[i], 0, thread_main, 0); | |
90 | ||
91 | for (int i = 0; i < max_thread_count; i++) | |
92 | pthread_join (tid[i], 0); | |
93 | } | |
94 | ||
95 | VERIFY( !std::strcmp (data, "barbazbongle") ); | |
96 | VERIFY( !std::strcmp (data2, "bar2baz2bongle2") ); | |
97 | ||
98 | return 0; | |
99 | } |