1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-17.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-17.c
new file mode 100644
index 000000000..aece3c7cd
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-17.c
@@ -0,0 +1,32 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdump-tree-ccp1" } */
+
+int foo(void)
+{
+  int i = 0;
+  char *p = (char *)&i;
+  return *(int *)p;
+}
+
+struct Foo {
+  int i;
+} f;
+
+int bar(void)
+{
+  char *p = (char *)&f;
+  return ((struct Foo *)p)->i;
+}
+
+extern const struct Foo g;
+
+int foobar(void)
+{
+  struct Foo *p = (struct Foo *)&g;
+  return ((const struct Foo *)p)->i;
+}
+
+/* { dg-final { scan-tree-dump "= i;" "ccp1" } } */
+/* { dg-final { scan-tree-dump "= f.i;" "ccp1" } } */
+/* { dg-final { scan-tree-dump "= g.i;" "ccp1" } } */
+/* { dg-final { cleanup-tree-dump "ccp1" } } */