1 files changed, 149 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-exec3.c b/sysdeps/pthread/tst-exec3.c
new file mode 100644
index 0000000000..b849d3aef7
--- /dev/null
+++ b/sysdeps/pthread/tst-exec3.c
@@ -0,0 +1,149 @@
+/* Thread calls exec.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <paths.h>
+#include <pthread.h>
+#include <signal.h>
+#include <spawn.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <support/xsignal.h>
+
+
+static void *
+tf (void *arg)
+{
+  execl (_PATH_BSHELL, _PATH_BSHELL, "-c", "echo $$", NULL);
+
+  puts ("execl failed");
+  exit (1);
+}
+
+
+static int
+do_test (void)
+{
+  int fd[2];
+  if (pipe (fd) != 0)
+    {
+      puts ("pipe failed");
+      exit (1);
+    }
+
+  /* Not interested in knowing when the pipe is closed.  */
+  xsignal (SIGPIPE, SIG_IGN);
+
+  pid_t pid = fork ();
+  if (pid == -1)
+    {
+      puts ("fork failed");
+      exit (1);
+    }
+
+  if (pid == 0)
+    {
+      /* Use the fd for stdout.  This is kind of ugly because it
+	 substitutes the fd of stdout but we know what we are doing
+	 here...  */
+      if (dup2 (fd[1], STDOUT_FILENO) != STDOUT_FILENO)
+	{
+	  puts ("dup2 failed");
+	  exit (1);
+	}
+
+      close (fd[0]);
+
+      pthread_t th;
+      if (pthread_create (&th, NULL, tf, NULL) != 0)
+	{
+	  puts ("create failed");
+	  exit (1);
+	}
+
+      if (pthread_join (th, NULL) == 0)
+	{
+	  puts ("join succeeded!?");
+	  exit (1);
+	}
+
+      puts ("join returned!?");
+      exit (1);
+    }
+
+  close (fd[1]);
+
+  char buf[200];
+  ssize_t n;
+  bool seen_pid = false;
+  while (TEMP_FAILURE_RETRY ((n = read (fd[0], buf, sizeof (buf)))) > 0)
+    {
+      /* We only expect to read the PID.  */
+      char *endp;
+      long int rpid = strtol (buf, &endp, 10);
+
+      if (*endp != '\n')
+	{
+	  printf ("didn't parse whole line: \"%s\"\n", buf);
+	  exit (1);
+	}
+      if (endp == buf)
+	{
+	  puts ("read empty line");
+	  exit (1);
+	}
+
+      if (rpid != pid)
+	{
+	  printf ("found \"%s\", expected PID %ld\n", buf, (long int) pid);
+	  exit (1);
+	}
+
+      if (seen_pid)
+	{
+	  puts ("found more than one PID line");
+	  exit (1);
+	}
+      seen_pid = true;
+    }
+
+  close (fd[0]);
+
+  int status;
+  int err = waitpid (pid, &status, 0);
+  if (err != pid)
+    {
+      puts ("waitpid failed");
+      exit (1);
+    }
+
+  if (!seen_pid)
+    {
+      puts ("didn't get PID");
+      exit (1);
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"