Update.

* locale/programs/locale.c (write_locales): Disable implicit
	locking for the stream.  Use feof_unlocked instead of feof.

ChangeLog

@@ -1,5 +1,8 @@
 2001-07-23  Ulrich Drepper  <drepper@redhat.com>
 
+	* locale/programs/locale.c (write_locales): Disable implicit
+	locking for the stream.  Use feof_unlocked instead of feof.
+
 	* sysdeps/unix/sysv/linux/i386/makecontext.S: Initialize %fs, %gs,
 	and floating-point status as well.
 

linuxthreads/ChangeLog

@@ -1,5 +1,8 @@
 2001-07-23  Ulrich Drepper  <drepper@redhat.com>
 
+	* Makefile (tests): Add tst-context.
+	* tst-context.c: New file.
+
 	* sysdeps/pthread/bits/stdio-lock.h: Define
 	_IO_cleanup_region_start_noarg.
 

linuxthreads/tst-context.c

@@ -0,0 +1,98 @@
+#include <errno.h>
+#include <error.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ucontext.h>
+
+#include "pt-machine.h"
+
+
+#define N	4
+
+#ifdef FLOATING_STACKS
+static char stacks[N][8192];
+static ucontext_t ctx[N][2];
+static volatile int failures;
+
+static void
+fct (long int n)
+{
+  /* Just to use the thread local descriptor.  */
+  printf ("%ld: in %s now\n", n, __FUNCTION__);
+  errno = 0;
+}
+
+static void *
+threadfct (void *arg)
+{
+  int n = (int) (long int) arg;
+
+  printf ("%d: %s: before makecontext\n", n, __FUNCTION__);
+
+  ctx[n][1].uc_stack.ss_sp = stacks[n];
+  ctx[n][1].uc_stack.ss_size = 8192;
+  ctx[n][1].uc_link = &ctx[n][0];
+  makecontext (&ctx[n][1], (void (*) (void)) fct, 1, (long int) n);
+
+  printf ("%d: %s: before swapcontext\n", n, __FUNCTION__);
+
+  if (swapcontext (&ctx[n][0], &ctx[n][1]) != 0)
+    {
+      ++failures;
+      printf ("%d: %s: swapcontext failed\n", n, __FUNCTION__);
+    }
+  else
+    printf ("%d: back in %s\n", n, __FUNCTION__);
+
+  return NULL;
+}
+#endif
+
+
+static volatile int global;
+
+int
+main (void)
+{
+#ifndef FLOATING_STACKS
+  puts ("not supported");
+  return 0;
+#else
+  int n;
+  pthread_t th[N];
+  ucontext_t mctx;
+
+  puts ("making contexts");
+  if (getcontext (&mctx) != 0)
+    {
+      if (errno == ENOSYS)
+	exit (0);
+
+      printf ("%s: getcontext: %m\n", __FUNCTION__);
+      exit (1);
+    }
+
+  /* Play some tricks with this context.  */
+  if (++global == 1)
+    if (setcontext (&mctx) != 0)
+      {
+	printf ("%s: setcontext: %m\n", __FUNCTION__);
+	exit (1);
+      }
+  if (global != 2)
+    {
+      printf ("%s: 'global' not incremented twice\n", __FUNCTION__);
+      exit (1);
+    }
+
+  for (n = 0; n < N; ++n)
+    if (pthread_create (&th[n], NULL, threadfct, (void *) n) != 0)
+      error (EXIT_FAILURE, errno, "cannot create all threads");
+
+  for (n = 0; n < N; ++n)
+    pthread_join (th[n], NULL);
+
+  return failures;
+#endif
+}

locale/programs/locale.c

@@ -34,6 +34,7 @@
 #include <locale.h>
 #include <search.h>
 #include <stdio.h>
+#include <stdio_ext.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -364,7 +365,10 @@ write_locales (void)
 	/* Ignore non-existing files.  */
 	continue;
 
-      while (! feof (fp))
+      /* No threads present.  */
+      __fsetlocking (fp, FSETLOCKING_BYCALLER);
+
+      while (! feof_unlocked (fp))
 	{
 	  /* It is a reasonable approach to use a fix buffer here
 	     because