1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr40718.c b/gcc/testsuite/gcc.target/i386/pr40718.c
new file mode 100644
index 000000000..f6029ed98
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr40718.c
@@ -0,0 +1,36 @@
+/* { dg-do run } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O1 -foptimize-sibling-calls" } */
+
+void abort (void);
+
+struct S
+{
+  void (__attribute__((__stdcall__)) *f) (struct S *);
+  int i;
+};
+
+void __attribute__((__stdcall__))
+foo (struct S *s)
+{
+  s->i++;
+}
+
+void __attribute__((__stdcall__))
+bar (struct S *s)
+{
+  foo(s);
+  s->f(s);
+}
+
+int main (void)
+{
+  struct S s = { foo, 0 };
+
+  bar (&s);
+  if (s.i != 2)
+    abort ();
+
+  return 0;
+}
+