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, 56 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/unsorted/udivmod4.c b/gcc/testsuite/gcc.c-torture/unsorted/udivmod4.c
new file mode 100644
index 000000000..40d2fa8d0
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/unsorted/udivmod4.c
@@ -0,0 +1,56 @@
+long long
+xlrandom ()
+{
+  long long x;
+  unsigned a;
+  int bits = 64;
+  unsigned b;
+
+  do
+    {
+      a = random ();
+      b = (a & 15) + 1;
+      x <<= b;				/* shift up 1-16 steps */
+      a = (a >> 18) & 1;
+      if (a)
+	x |= (unsigned) (1 << b) - 1;
+      bits -= b;
+    }
+  while (bits >= 0);
+  return x;
+}
+
+
+unsigned long long __udivmoddi4();
+
+main ()
+{
+  int i;
+  unsigned long long n, d, q, r, rr;
+
+  for (i = 0; ;i++)
+    {
+      n = xlrandom ();
+      d = xlrandom ();
+      if (d == 0)
+	continue;
+
+      q = __udivmoddi4 (n, d, &r);
+
+      if (i % 1000000 == 0)
+	printf ("Testing udivmoddi4: %d iterations made\n", i);
+
+      rr = n - q * d;
+      if (rr != r || r >= d)
+	{
+	  printf ("Testing udivmoddi4: failure after %d iterations\n", i);
+	  printf ("n=%lX%08lX\n", (unsigned) (n >> 32), (unsigned) n);
+	  printf ("d=%lX%08lX\n", (unsigned) (d >> 32), (unsigned) d);
+	  printf ("q=%lX%08lX\n", (unsigned) (q >> 32), (unsigned) q);
+	  printf ("r=%lX%08lX\n", (unsigned) (r >> 32), (unsigned) r);
+	  printf ("rr=%lX%08lX\n", (unsigned) (rr >> 32), (unsigned) rr);
+	  abort ();
+	}
+    }
+
+}