Merge GDB 7.5.1

gdb/testsuite/gdb.base/stale-infcall.c

 /* This testcase is part of GDB, the GNU debugger.
 
-   Copyright 2004, 2007-2012 Free Software Foundation, Inc.
+   Copyright 2012 Free Software Foundation, Inc.
 
    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 <signal.h>
+#include <setjmp.h>
+#include <string.h>
 #include <stdlib.h>
-#include <string.h>
 
-extern void
-keeper (int sig)
+#define BUFSIZE 0x1000
+
+static jmp_buf jmp;
+
+void
+infcall (void)
 {
+  longjmp (jmp, 1); /* test-next */
 }
 
-volatile long v1 = 0;
-volatile long v2 = 0;
-volatile long v3 = 0;
+static void
+run1 (void)
+{
+  char buf[BUFSIZE / 2];
+  int dummy = 0;
 
-extern long
-bowler (void)
+  dummy++; /* break-run1 */
+}
+
+static char buf_zero[BUFSIZE];
+
+static void
+run2 (void)
 {
-  /* Try to read address zero.  Do it in a slightly convoluted way so
-     that more than one instruction is used.  */
-  return *(char *) (v1 + v2 + v3);
+  char buf[BUFSIZE];
+
+  memset (buf, 0, sizeof (buf));
+
+  if (memcmp (buf, buf_zero, sizeof (buf)) != 0) /* break-run2 */
+    abort (); /* break-fail */
 }
 
 int
 main ()
 {
-  static volatile int i;
+  if (setjmp (jmp) == 0) /* test-pass */
+    infcall ();
 
-  struct sigaction act;
-  memset (&act, 0, sizeof act);
-  act.sa_handler = keeper;
-  sigaction (SIGSEGV, &act, NULL);
-  sigaction (SIGBUS, &act, NULL);
+  if (setjmp (jmp) == 0) /* test-fail */
+    run1 ();
+  else
+    run2 ();
 
-  bowler ();
-  return 0;
+  return 0; /* break-exit */
 }