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, 44 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/frame-address.c b/gcc/testsuite/gcc.c-torture/execute/frame-address.c
new file mode 100644
index 000000000..109c2b229
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/frame-address.c
@@ -0,0 +1,44 @@
+int check_fa_work (const char *, const char *) __attribute__((noinline));
+int check_fa_mid (const char *) __attribute__((noinline));
+int check_fa (char *) __attribute__((noinline));
+int how_much (void) __attribute__((noinline));
+
+int check_fa_work (const char *c, const char *f)
+{
+  const char d = 0;
+
+  if (c >= &d)
+    return c >= f && f >= &d;
+  else
+    return c <= f && f <= &d;
+}
+
+int check_fa_mid (const char *c)
+{
+  const char *f = __builtin_frame_address (0);
+
+  /* Prevent a tail call to check_fa_work, eliding the current stack frame.  */
+  return check_fa_work (c, f) != 0;
+}
+
+int check_fa (char *unused)
+{
+  const char c = 0;
+
+  /* Prevent a tail call to check_fa_mid, eliding the current stack frame.  */
+  return check_fa_mid (&c) != 0;
+}
+
+int how_much (void)
+{
+	return 8;
+}
+
+int main (void)
+{
+  char *unused = __builtin_alloca (how_much ());
+
+  if (!check_fa(unused))
+    abort();
+  return 0;
+}