GDB 7.6.50

gdb/contrib/expect-read1.c

-/* Copyright 2011-2012 Free Software Foundation, Inc.
+/* Copyright (C) 2013 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#include <pthread.h>
+/* RTLD_NEXT requires _GNU_SOURCE.  */
+#define _GNU_SOURCE 1
+#include <dlfcn.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include <stdlib.h>
-#include <assert.h>
 
-pthread_t thread0;
-pthread_t thread1;
+ssize_t
+read (int fd, void *buf, size_t count)
+{
+  static ssize_t (*read2) (int fd, void *buf, size_t count) = NULL;
 
-static void *
-start (void *arg)
-{
-  assert (pthread_self () == thread1);
+  if (read2 == NULL)
+    {
+      unsetenv ("LD_PRELOAD");
+      read2 = dlsym (RTLD_NEXT, "read");
+    }
 
-  abort ();
+  if (count > 1 && isatty (fd) == 1)
+    count = 1;
+
+  return read2 (fd, buf, count);
 }
-
-int
-main (void)
-{
-  int i;
-
-  thread0 = pthread_self ();
-
-  i = pthread_create (&thread1, NULL, start, NULL);
-  assert (i == 0);
-
-  i = pthread_join (thread1, NULL);
-  assert (i == 0);
-
-  return 0;
-}