| /* Test that loading libpthread does not break ld.so exceptions (bug 16628). |
| Copyright (C) 2016-2018 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/>. */ |
| |
| #include <dlfcn.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| |
| static int |
| do_test (void) |
| { |
| void *handle = dlopen ("tst-latepthreadmod.so", RTLD_LOCAL | RTLD_LAZY); |
| if (handle == NULL) |
| { |
| printf ("error: dlopen failed: %s\n", dlerror ()); |
| return 1; |
| } |
| void *ptr = dlsym (handle, "trigger_dynlink_failure"); |
| if (ptr == NULL) |
| { |
| printf ("error: dlsym failed: %s\n", dlerror ()); |
| return 1; |
| } |
| int (*func) (void) = ptr; |
| |
| /* Run the actual test in a subprocess, to capture the error. */ |
| int fds[2]; |
| if (pipe (fds) < 0) |
| { |
| printf ("error: pipe: %m\n"); |
| return 1; |
| } |
| pid_t pid = fork (); |
| if (pid < 0) |
| { |
| printf ("error: fork: %m\n"); |
| return 1; |
| } |
| else if (pid == 0) |
| { |
| if (dup2 (fds[1], STDERR_FILENO) < 0) |
| _exit (2); |
| /* Trigger an abort. */ |
| func (); |
| _exit (3); |
| } |
| /* NB: This assumes that the abort message is so short that the pipe |
| does not block. */ |
| int status; |
| if (waitpid (pid, &status, 0) < 0) |
| { |
| printf ("error: waitpid: %m\n"); |
| return 1; |
| } |
| |
| /* Check the printed error message. */ |
| if (close (fds[1]) < 0) |
| { |
| printf ("error: close: %m\n"); |
| return 1; |
| } |
| char buf[512]; |
| /* Leave room for the NUL terminator. */ |
| ssize_t ret = read (fds[0], buf, sizeof (buf) - 1); |
| if (ret < 0) |
| { |
| printf ("error: read: %m\n"); |
| return 1; |
| } |
| if (ret > 0 && buf[ret - 1] == '\n') |
| --ret; |
| buf[ret] = '\0'; |
| printf ("info: exit status: %d, message: %s\n", status, buf); |
| if (strstr (buf, "undefined symbol: this_function_is_not_defined") == NULL) |
| { |
| printf ("error: message does not contain expected string\n"); |
| return 1; |
| } |
| if (!WIFEXITED (status) || WEXITSTATUS (status) != 127) |
| { |
| printf ("error: unexpected process exit status\n"); |
| return 1; |
| } |
| return 0; |
| } |
| |
| #include <support/test-driver.c> |