1 /* builtin_return_address(n) with n>0 has always been troublesome ...
2    especially when the S/390 packed stack layout comes into play.  */
3 
4 /* { dg-do run } */
5 /* { dg-options "-O3 -fno-optimize-sibling-calls -mbackchain -mpacked-stack -msoft-float" } */
6 
7 void *addr1;
8 
9 extern void abort (void);
10 
11 void * __attribute__((noinline))
foo1()12 foo1 ()
13 {
14   addr1 = __builtin_return_address (2);
15 }
16 
17 void * __attribute__((noinline))
foo2()18 foo2 ()
19 {
20   foo1 ();
21 }
22 
23 void * __attribute__((noinline))
foo3()24 foo3 ()
25 {
26   foo2 ();
27 }
28 
29 void __attribute__((noinline))
bar()30 bar ()
31 {
32   void *addr2;
33 
34   foo3 ();
35   asm volatile ("basr  %0,0\n\t" : "=d" (addr2));
36   /* basr is two bytes in length.  */
37   if (addr2 - addr1 != 2)
38     abort ();
39 }
40 
41 int
main()42 main ()
43 {
44   bar();
45   return 0;
46 }
47