Remove tst-sigcontext test.

It's bogus in many places.

3 files changed, 2 insertions, 313 deletions

diff --git a/ChangeLog b/ChangeLog
index 0c1d2dbd36..bdd41da14a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2009-12-15  Maciej W. Rozycki  <macro@codesourcery.com>
 
+	[BZ #11115]
 	* stdlib/tst-makecontext3.c: New file.
 	* stdlib/tst-sigcontext.c: file.
 	* stdlib/Makefile (tests): Add new tests.
diff --git a/stdlib/Makefile b/stdlib/Makefile
index 882302f25c..bb0661af3b 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -71,7 +71,7 @@ tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv   \
 		   tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2 \
 		   tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2	    \
 		   tst-makecontext2 tst-strtod6 tst-unsetenv1		    \
-		   tst-makecontext3 tst-sigcontext
+		   tst-makecontext3
 
 include ../Makeconfig
 
diff --git a/stdlib/tst-sigcontext.c b/stdlib/tst-sigcontext.c
deleted file mode 100644
index 45b1a06a28..0000000000
--- a/stdlib/tst-sigcontext.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/* Copyright (C) 2009 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
-
-   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, write to the Free
-   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
-   02110-1301, USA.  */
-
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <ucontext.h>
-#include <unistd.h>
-
-static volatile ucontext_t ctx[3];
-static volatile int flags[3];
-static volatile int oflag;
-static volatile int flag;
-
-static volatile int sig_errno_set;
-static volatile int sig_errno;
-static volatile int sig_ready;
-
-static int was_in_f1;
-static int was_in_f2;
-
-static char st2[32768];
-
-static long long int max;
-static volatile long long int count;
-
-/* These have to be run with the caller's frame.  */
-static inline int sig_getcontext (int) __attribute__ ((always_inline));
-static inline int sig_swapcontext (int, int) __attribute__ ((always_inline));
-
-static void
-sig_gethandler (int signo, siginfo_t *info, void *context)
-{
-  ucontext_t *ucp = context;
-
-  if (! sig_ready)
-    {
-      alarm (1);
-      return;
-    }
-
-  ctx[flag] = *ucp;
-  flags[flag] = 1;
-
-  sig_errno_set = 1;
-  sig_errno = 0;
-}
-
-static void
-sig_swaphandler (int signo, siginfo_t *info, void *context)
-{
-  ucontext_t *oucp = context;
-  ucontext_t *ucp = (ucontext_t *) (ctx + flag);
-
-  if (! sig_ready)
-    {
-      alarm (1);
-      return;
-    }
-
-  ctx[oflag] = *oucp;
-  flags[oflag] = 1;
-
-  sig_errno_set = 1;
-  sig_errno = setcontext (ucp);
-}
-
-static int
-sig_getcontext (int uci)
-{
-  struct sigaction sa;
-
-  sigemptyset (&sa.sa_mask);
-  sa.sa_flags = SA_SIGINFO;
-  sa.sa_sigaction = sig_gethandler;
-  if (sigaction (SIGALRM, &sa, NULL) < 0)
-    {
-      printf ("%s: sigaction ALRM failed: %m\n", __FUNCTION__);
-      exit (1);
-    }
-
-  flag = uci;
-  sig_errno_set = 0;
-  sig_ready = 0;
-  alarm (1);
-
-  /* Need to get the signal in this frame.  */
-  sig_ready = 1;
-  for (count = max; count > 0; count--)
-    if (sig_errno_set)
-      break;
-
-  if (! sig_errno_set)
-    {
-      printf ("%s: ALRM signal not received\n", __FUNCTION__);
-      exit (1);
-    }
-
-  return 0;
-}
-
-static int
-sig_swapcontext (int ouci, int uci)
-{
-  struct sigaction sa;
-
-  sigemptyset (&sa.sa_mask);
-  sa.sa_flags = SA_SIGINFO;
-  sa.sa_sigaction = sig_swaphandler;
-  if (sigaction (SIGALRM, &sa, NULL) < 0)
-    {
-      printf ("%s: sigaction ALRM failed: %m\n", __FUNCTION__);
-      exit (1);
-    }
-
-  flag = uci;
-  oflag = ouci;
-  sig_errno_set = 0;
-  sig_ready = 0;
-  alarm (1);
-
-  /* Need to get the signal in this frame.  */
-  sig_ready = 1;
-  for (count = max; count > 0; count--)
-    if (sig_errno_set)
-      break;
-
-  if (! sig_errno_set)
-    {
-      printf ("%s: ALRM signal not received\n", __FUNCTION__);
-      exit (1);
-    }
-
-  return sig_errno;
-}
-
-
-static void
-f1 (int a0, int a1, int a2, int a3)
-{
-  int status;
-
-  printf ("start f1(a0=%x,a1=%x,a2=%x,a3=%x)\n", a0, a1, a2, a3);
-
-  if (a0 != 1 || a1 != 2 || a2 != 3 || a3 != -4)
-    {
-      puts ("arg mismatch");
-      exit (-1);
-    }
-
-  status = sig_swapcontext (1, 2);
-  if (status != 0)
-    {
-      printf ("%s: swapping contexts failed: %s\n",
-	      __FUNCTION__, strerror (status));
-      exit (1);
-    }
-  puts ("finish f1");
-  was_in_f1 = 1;
-}
-
-static void
-f2 (void)
-{
-  int status;
-
-  puts ("start f2");
-
-  status = sig_swapcontext (2, 1);
-  if (status != 0)
-    {
-      printf ("%s: swapping contexts failed: %s\n",
-	      __FUNCTION__, strerror (status));
-      exit (1);
-    }
-  puts ("finish f2");
-  was_in_f2 = 1;
-}
-
-
-static int back_in_main;
-
-static void
-check_called (void)
-{
-  if (back_in_main == 0)
-    {
-      printf ("%s: program did not reach main again", __FUNCTION__);
-      _exit (1);
-    }
-}
-
-
-volatile int global;
-
-int
-main (void)
-{
-  char st1[32768];
-  time_t t0, t1;
-  int status;
-
-  atexit (check_called);
-
-  puts ("calibrating delay loop");
-  for (max = 0x10000; max < LLONG_MAX / 2; max *= 2)
-    {
-      t0 = time (NULL);
-      for (count = max; count > 0; count--);
-      t1 = time (NULL);
-      if (difftime (t1, t0) > 10.0)
-	break;
-    }
-
-  puts ("making contexts");
-
-  sig_getcontext (1);
-  if (! flags[1])
-    {
-      printf ("%s: context not retrieved\n", __FUNCTION__);
-      exit (1);
-    }
-
-  /* Play some tricks with this context.  */
-  if (++global == 1)
-    if (setcontext ((ucontext_t *) &ctx[1]) != 0)
-      {
-	if (errno == ENOSYS)
-	  {
-	    back_in_main = 1;
-	    exit (0);
-	  }
-	printf ("%s: setcontext: %m\n", __FUNCTION__);
-	exit (1);
-      }
-  if (global != 2)
-    {
-      printf ("%s: 'global' not incremented twice\n", __FUNCTION__);
-      exit (1);
-    }
-
-  ctx[1].uc_stack.ss_sp = st1;
-  ctx[1].uc_stack.ss_size = sizeof st1;
-  ctx[1].uc_link = (ucontext_t *) &ctx[0];
-  {
-    ucontext_t tempctx = ctx[1];
-    makecontext ((ucontext_t *) &ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
-
-    /* Without this check, a stub makecontext can make us spin forever.  */
-    if (memcmp (&tempctx, (void *) &ctx[1], sizeof ctx[1]) == 0)
-      {
-        puts ("makecontext was a no-op, presuming not implemented");
-        return 0;
-      }
-  }
-
-  sig_getcontext (2);
-  if (! flags[2])
-    {
-      printf ("%s: second context not retrieved\n", __FUNCTION__);
-      exit (1);
-    }
-
-  ctx[2].uc_stack.ss_sp = st2;
-  ctx[2].uc_stack.ss_size = sizeof st2;
-  ctx[2].uc_link = (ucontext_t *) &ctx[1];
-  makecontext ((ucontext_t *) &ctx[2], f2, 0);
-
-  puts ("swapping contexts");
-  status = sig_swapcontext (0, 2);
-  if (status != 0)
-    {
-      printf ("%s: swapping contexts failed: %s\n",
-	      __FUNCTION__, strerror (status));
-      exit (1);
-    }
-  puts ("back at main program");
-  back_in_main = 1;
-
-  if (was_in_f1 == 0)
-    {
-      puts ("didn't reach f1");
-      exit (1);
-    }
-  if (was_in_f2 == 0)
-    {
-      puts ("didn't reach f2");
-      exit (1);
-    }
-
-  puts ("test succeeded");
-  return 0;
-}