1 files changed, 30 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/builtins/20010124-1.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/builtins/20010124-1.c
new file mode 100644
index 000000000..816287344
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/builtins/20010124-1.c
@@ -0,0 +1,30 @@
+/* Verify that structure return doesn't invoke memcpy on 
+   overlapping objects.  */
+
+extern void abort (void);
+
+struct S {
+  char stuff[1024];
+};
+
+union U {
+  struct {
+    int space;
+    struct S s;
+  } a;
+  struct {
+    struct S s;
+    int space;
+  } b;
+};
+
+struct S f(struct S *);
+void g(union U *);
+
+void main_test(void)
+{
+  union U u;
+  u.b.s = f(&u.a.s);
+  u.a.s = f(&u.b.s);
+  g(&u);
+}