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, 35 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/pr39082-1.c b/gcc/testsuite/gcc.target/i386/pr39082-1.c
new file mode 100644
index 000000000..0a788d116
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr39082-1.c
@@ -0,0 +1,35 @@
+/* PR target/39082 */
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2" } */
+
+union un
+{
+  long double x;
+  int i;
+};
+
+extern int bar1 (union un);
+extern union un bar2 (int);
+
+int
+foo1 (union un u)
+{
+  bar1 (u);
+  return u.i;
+}
+
+int
+foo2 (void)
+{
+  union un u;
+  u.i = 1;
+  return foo1 (u) + bar1 (u);
+}
+
+int
+foo3 (int x)
+{
+  union un u = bar2 (x); /* { dg-message "note: the ABI of passing union with long double has changed in GCC 4.4" } */
+  return u.i;
+}