1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/torture/pta-ptrarith-2.c b/gcc/testsuite/gcc.dg/torture/pta-ptrarith-2.c
new file mode 100644
index 000000000..fb5b2e15e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pta-ptrarith-2.c
@@ -0,0 +1,36 @@
+/* { dg-do run } */
+/* { dg-options "-fdump-tree-alias" } */
+/* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
+
+struct Foo {
+  int **p;
+  int **q;
+};
+
+int __attribute__((noinline))
+bar (void)
+{
+  struct Foo f;
+  int j, i = 1;
+  char *p;
+  int *x = &i;
+  int *y = &j;
+  f.p = &y;
+  f.q = &x;
+  p = (char *)&f;
+  for (j = 0; j < sizeof (int *); ++j)
+    p++;
+  return ***(int ***)p;
+}
+extern void abort (void);
+int main()
+{
+  if (bar () != 1)
+    abort ();
+  return 0;
+}
+
+/* In theory = { i } is the correct solution.  But it's not easy to scan
+   for that reliably, so just use what we create now.  */
+/* { dg-final { scan-tree-dump "= { i j }" "alias" } } */
+/* { dg-final { cleanup-tree-dump "alias" } } */