obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 166 insertions, 0 deletions

diff --git a/gcc/ada/ctrl_c.c b/gcc/ada/ctrl_c.c
new file mode 100644
index 000000000..a860b767c
--- /dev/null
+++ b/gcc/ada/ctrl_c.c
@@ -0,0 +1,166 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                               C T R L _ C                                *
+ *                                                                          *
+ *                          C Implementation File                           *
+ *                                                                          *
+ *        Copyright (C) 2002-2009, Free Software Foundation, Inc.           *
+ *                                                                          *
+ * GNAT is free software;  you can  redistribute it  and/or modify it under *
+ * terms of the  GNU General Public License as published  by the Free Soft- *
+ * ware  Foundation;  either version 3,  or (at your option) any later ver- *
+ * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
+ * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
+ *                                                                          *
+ * As a special exception under Section 7 of GPL version 3, you are granted *
+ * additional permissions described in the GCC Runtime Library Exception,   *
+ * version 3.1, as published by the Free Software Foundation.               *
+ *                                                                          *
+ * You should have received a copy of the GNU General Public License and    *
+ * a copy of the GCC Runtime Library Exception along with this program;     *
+ * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
+ * <http://www.gnu.org/licenses/>.                                          *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+#ifdef IN_RTS
+#include "tconfig.h"
+#include "tsystem.h"
+#include <sys/stat.h>
+#else
+#include "config.h"
+#include "system.h"
+#endif
+
+/* Services to intercept Ctrl-C */
+
+/* __gnat_install_int_handler will install the specified handler.
+   If called for the first time, it will also save the original handler */
+void __gnat_install_int_handler (void (*) (void));
+
+/* __gnat_uninstall_int_handler will reinstall the original handler */
+void __gnat_uninstall_int_handler (void);
+
+/* POSIX implementation */
+
+#if (defined (__unix__) || defined (_AIX) || defined (__APPLE__)) \
+ && !defined (__vxworks)
+
+#include <signal.h>
+
+void (*sigint_intercepted) (void) = 0;
+
+struct sigaction original_act;
+
+static void
+__gnat_int_handler (int sig __attribute__ ((unused)))
+{
+  if (sigint_intercepted != 0)
+    sigint_intercepted ();
+}
+
+/* Install handler and save original handler. */
+
+void
+__gnat_install_int_handler (void (*proc) (void))
+{
+  struct sigaction act;
+
+  if (sigint_intercepted == 0)
+    {
+      act.sa_handler = __gnat_int_handler;
+#if defined (__Lynx__)
+      /* LynxOS does not support SA_RESTART. */
+      act.sa_flags = 0;
+#else
+      act.sa_flags = SA_RESTART;
+#endif
+      sigemptyset (&act.sa_mask);
+      sigaction (SIGINT, &act, &original_act);
+    }
+
+  sigint_intercepted = proc;
+}
+
+/* Restore original handler */
+
+void
+__gnat_uninstall_int_handler (void)
+{
+ if (sigint_intercepted != 0)
+   {
+     sigaction (SIGINT, &original_act, 0);
+     sigint_intercepted = 0;
+   }
+}
+
+/* Windows implementation */
+
+#elif defined (__MINGW32__)
+
+#include "mingw32.h"
+#include <windows.h>
+
+void (*sigint_intercepted) (void) = NULL;
+
+static BOOL WINAPI
+__gnat_int_handler  (DWORD dwCtrlType)
+{
+  switch (dwCtrlType)
+    {
+    case CTRL_C_EVENT:
+    case CTRL_BREAK_EVENT:
+      if (sigint_intercepted != 0)
+        {
+          sigint_intercepted ();
+          return TRUE;
+        }
+      break;
+
+    case CTRL_CLOSE_EVENT:
+    case CTRL_LOGOFF_EVENT:
+    case CTRL_SHUTDOWN_EVENT:
+      break;
+    }
+
+  return FALSE;
+}
+
+void
+__gnat_install_int_handler (void (*proc) (void))
+{
+  if (sigint_intercepted == NULL)
+    SetConsoleCtrlHandler (__gnat_int_handler, TRUE);
+
+  sigint_intercepted = proc;
+}
+
+void
+__gnat_uninstall_int_handler (void)
+{
+  if (sigint_intercepted != NULL)
+    SetConsoleCtrlHandler (__gnat_int_handler, FALSE);
+
+  sigint_intercepted = NULL;
+}
+
+/* Default implementation: do nothing */
+
+#else
+
+void
+__gnat_install_int_handler (void (*proc) (void) __attribute__ ((unused)))
+{
+}
+
+void
+__gnat_uninstall_int_handler (void)
+{
+}
+#endif