Merge from trunk.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/wide-int@209485 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 32 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/pr56965-1.c b/gcc/testsuite/gcc.dg/torture/pr56965-1.c
new file mode 100644
index 00000000000..2512db3965d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr56965-1.c
@@ -0,0 +1,32 @@
+/* { dg-do run } */
+/* { dg-options "-fschedule-insns" { target scheduling } } */
+
+extern void abort (void);
+
+struct S {
+    int i;
+    int j;
+};
+
+struct U {
+    struct S s;
+} __attribute__((may_alias));
+
+int __attribute__((noinline,noclone))
+foo (struct U *p, struct U *q)
+{
+  int i;
+  q->s.j = 1;
+  i = p->s.i;
+  return i;
+}
+
+int main()
+{
+  int a[3];
+  int *p = a;
+  p[1] = 0;
+  if (foo ((struct U *)(p + 1), (struct U *)p) != 1)
+    abort ();
+  return 0;
+}