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, 45 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20070302-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20070302-1.c
new file mode 100644
index 000000000..4b148f23d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20070302-1.c
@@ -0,0 +1,45 @@
+/* { dg-do link } */
+/* { dg-options "-O2" } */
+
+struct A
+{
+  int x;
+  float y;
+};
+
+volatile float X, Y;
+
+int __attribute__ ((__noinline__))
+baz (struct A *z, struct A *y)
+{
+  z->x = (int) X;
+  z->y = Y;
+  y->x = (int) X;
+  y->y = Y;
+}
+
+
+struct A B;
+
+float foo (int i)
+{
+  struct A *p, x, y, z;
+
+  p = (i > 10) ? &x : &z;
+  x.y = 3.0;
+  p->x += baz (&z, &y);
+  X = z.y;
+  Y = p->y;
+
+  /* This predicate should always evaluate to false.  The call to
+     baz() is not a clobbering site for x.y.  The operand scanner was
+     considering it a clobbering site for x.y because x.y is in the
+     alias set of a call-clobbered memory tag.  */
+  if (x.y != 3.0)
+    link_error ();
+}
+
+main(int argc, char **argv)
+{
+  foo (argc);
+}