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, 95 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/dbra-1.c b/gcc/testsuite/gcc.c-torture/execute/dbra-1.c
new file mode 100644
index 000000000..20ae8988e
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/dbra-1.c
@@ -0,0 +1,95 @@
+f1 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (--a == -1)
+	return i;
+    }
+  return -1;
+}
+
+f2 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (--a != -1)
+	return i;
+    }
+  return -1;
+}
+
+f3 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (--a == 0)
+	return i;
+    }
+  return -1;
+}
+
+f4 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (--a != 0)
+	return i;
+    }
+  return -1;
+}
+
+f5 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (++a == 0)
+	return i;
+    }
+  return -1;
+}
+
+f6 (a)
+     long a;
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    {
+      if (++a != 0)
+	return i;
+    }
+  return -1;
+}
+
+
+main()
+{
+  if (f1 (5L) != 5)
+    abort ();
+  if (f2 (1L) != 0)
+    abort ();
+  if (f2 (0L) != 1)
+    abort ();
+  if (f3 (5L) != 4)
+    abort ();
+  if (f4 (1L) != 1)
+    abort ();
+  if (f4 (0L) != 0)
+    abort ();
+  if (f5 (-5L) != 4)
+    abort ();
+  if (f6 (-1L) != 1)
+    abort ();
+  if (f6 (0L) != 0)
+    abort ();
+  exit (0);
+}