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, 34 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp54.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp54.c
new file mode 100644
index 000000000..6e8da7758
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp54.c
@@ -0,0 +1,34 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1" } */
+
+extern void link_error (void);
+void foo (void)
+{
+  int j = 256;
+  do
+    {
+      if (j < 0 || j > 256)
+	link_error ();
+      j--;
+    }
+  while (j >= 0);
+  if (j != -1)
+    link_error ();
+}
+extern void link_error (void);
+void bar (void)
+{
+  int j = 0;
+  do
+    {
+      if (j < 0 || j > 256)
+	link_error ();
+      j++;
+    }
+  while (j <= 256);
+  if (j != 257)
+    link_error ();
+}
+
+/* { dg-final { scan-tree-dump-not "link_error" "vrp1" } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */