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, 28 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/tree-ssa/fold-compare.C b/gcc/testsuite/g++.dg/tree-ssa/fold-compare.C
new file mode 100644
index 000000000..2b4c41103
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/fold-compare.C
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+struct ExtentsBase {
+ ExtentsBase() : startx_(), endx_() { }
+ ExtentsBase(const ExtentsBase &b) {
+  *this = b;
+ }
+
+ const ExtentsBase & operator=(const ExtentsBase &b) {
+  if (this != &b) {
+    startx_ = b.startx_;
+  }
+  return *this;
+ }
+
+ int startx_;
+  int endx_;
+};
+
+int f(const ExtentsBase &e1) {
+ ExtentsBase my_extents = e1;
+ return my_extents.startx_;
+}
+
+/* { dg-final { scan-tree-dump-not "&my_extents" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+