1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c b/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c
new file mode 100644
index 000000000..ddf934bf8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-forwprop -fno-tree-ccp -fdump-tree-ealias" } */
+
+extern void abort (void);
+struct X {
+  int *p;
+  int *q;
+  int *r;
+};
+int __attribute__((noinline))
+foo(int i, int j, int k, int off)
+{
+  struct X x;
+  int **p, *q;
+  x.p = &i;
+  x.q = &j;
+  x.r = &k;
+  p = &x.q;
+  p -= 1;
+  /* *p points to { i } */
+  q = *p;
+  return *q;
+}
+
+/* { dg-final { scan-tree-dump "q_., points-to vars: { i }" "ealias" } } */
+/* { dg-final { cleanup-tree-dump "ealias" } } */