| /* Copyright (C) 2013 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* Dynamic module with TLS to be accessed by a signal handler to check safety |
| of that mode. */ |
| |
| #include <semaphore.h> |
| #include <signal.h> |
| #include <unistd.h> |
| |
| /* This is an unlikely value to see in incorrectly initialized TLS |
| block -- make sure we're initialized properly. */ |
| static __thread intptr_t tls_data = 0xdeadbeef; |
| |
| void |
| action (int signo, siginfo_t *info, void *ignored) |
| { |
| if (tls_data != 0xdeadbeef) |
| { |
| write (STDOUT_FILENO, "wrong TLS value\n", 17); |
| _exit (1); |
| } |
| |
| /* arbitrary choice, just write something unique-ish. */ |
| tls_data = (intptr_t) info; |
| } |
