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, 37 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/transparent-union-5.c b/gcc/testsuite/gcc.dg/transparent-union-5.c
new file mode 100644
index 000000000..47e245e24
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/transparent-union-5.c
@@ -0,0 +1,37 @@
+/* PR 24255 */
+/* { dg-do run } */
+/* { dg-options "-O" } */
+
+extern void abort (void);
+
+union wait { int w_status; };
+
+typedef union
+{
+  union wait *uptr;
+  int *iptr;
+} WAIT_STATUS __attribute__ ((__transparent_union__));
+
+int status;
+union wait wstatus;
+
+void __attribute__((noinline))
+test1 (WAIT_STATUS s)
+{
+  if (s.iptr != &status)
+    abort ();
+}
+
+void __attribute__((noinline))
+test2 (WAIT_STATUS s)
+{
+  if (s.uptr != &wstatus)
+    abort ();
+}
+
+int main()
+{
+  test1 (&status);
+  test2 (&wstatus);
+  return 0;
+}