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, 46 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/sibcall-7.c b/gcc/testsuite/gcc.dg/sibcall-7.c
new file mode 100644
index 000000000..6d59ca339
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/sibcall-7.c
@@ -0,0 +1,46 @@
+/* Simple check that tail recursive call optimization is also
+   controlled by -foptimize-sibling-calls.
+
+   Copyright (C) 2006 Free Software Foundation Inc.
+   Original test by Hans-Peter Nilsson  <hp@bitrange.com>  */
+
+/* On IA64 the call frame is allocated on the register stack, not the
+   normal stack.  */
+
+/* { dg-do run { target { ! "ia64-*-*" } } } */
+/* { dg-options "-O2 -fno-optimize-sibling-calls" } */
+
+
+extern void abort (void);
+
+extern void recurser_void (int);
+extern void track (int);
+
+int main (void)
+{
+  recurser_void (0);
+  return 0;
+}
+
+void recurser_void (int n)
+{
+  if (n == 0 || n == 7)
+    track (n);
+
+  if (n == 10)
+    return;
+
+  recurser_void (n + 1);
+}
+
+void *trackpoint;
+
+void track (int n)
+{
+  char stackpos[1];
+
+  if (n == 0)
+    trackpoint = stackpos;
+  else if (n != 7 || trackpoint == stackpos)
+    abort ();
+}