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, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/opt/nrv8.C b/gcc/testsuite/g++.dg/opt/nrv8.C
new file mode 100644
index 000000000..19999a188
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/nrv8.C
@@ -0,0 +1,31 @@
+// PR optimization/19531
+// forbids NRV on volatile return value.
+// { dg-options -O2 }
+// { dg-do run }
+
+extern "C" { void abort(); }
+
+struct A
+{
+  int d;
+
+  A ()                     { d = 123; }
+  A (const A & o)          { d = o.d;  }
+  A (volatile const A & o) { d = o.d + 2; }
+};
+
+A bar()
+{
+  volatile A l;
+  return l;
+}
+
+main()
+{
+  A a = bar ();
+
+  if (a.d != 125)
+    abort();
+
+  return 0;
+}