1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/20020810-1.c b/gcc/testsuite/gcc.c-torture/execute/20020810-1.c
new file mode 100644
index 000000000..d3386973a
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20020810-1.c
@@ -0,0 +1,38 @@
+/* PR target/7559
+   This testcase was miscompiled on x86-64, because classify_argument
+   wrongly computed the offset of nested structure fields.  */
+
+extern void abort (void);
+
+struct A
+{
+  long x;
+};
+
+struct R
+{
+  struct A a, b;
+};
+
+struct R R = { 100, 200 };
+
+void f (struct R r)
+{
+  if (r.a.x != R.a.x || r.b.x != R.b.x)
+    abort ();
+}
+
+struct R g (void)
+{
+  return R;
+}
+
+int main (void)
+{
+  struct R r;
+  f(R);
+  r = g();
+  if (r.a.x != R.a.x || r.b.x != R.b.x)
+    abort ();
+  return 0;
+}