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, 30 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/alias-19.c b/gcc/testsuite/gcc.dg/tree-ssa/alias-19.c
new file mode 100644
index 000000000..7b3689049
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/alias-19.c
@@ -0,0 +1,30 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -fdump-tree-alias-vops" } */
+
+const static int a;
+
+int __attribute__((noinline))
+foo(int i)
+{
+  const int *q;
+  int b;
+  if (i)
+    q = &a;
+  else
+    q = &b;
+  b = 1;
+  /* We should not prune a from the points-to set of q.  */
+  return *q;
+}
+
+extern void abort (void);
+int main()
+{
+  if (foo(1) != 0)
+    abort ();
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "q_. = { a b }" "alias" } } */
+/* { dg-final { scan-tree-dump "q_., points-to vars: { a b }" "alias" } } */
+/* { dg-final { cleanup-tree-dump "alias" } } */