| /* Simple check that tail recursive call optimization is also |
| controlled by -foptimize-sibling-calls. |
| |
| Copyright (C) 2006 Free Software Foundation Inc. |
| Original test by Hans-Peter Nilsson <hp@bitrange.com> */ |
| |
| /* On IA64 the call frame is allocated on the register stack, not the |
| normal stack. */ |
| |
| /* { dg-do run { target { ! "ia64-*-*" } } } */ |
| /* { dg-options "-O2 -fno-optimize-sibling-calls" } */ |
| |
| |
| extern void abort (void); |
| |
| extern void recurser_void (int); |
| extern void track (int); |
| |
| int main (void) |
| { |
| recurser_void (0); |
| return 0; |
| } |
| |
| void recurser_void (int n) |
| { |
| if (n == 0 || n == 7) |
| track (n); |
| |
| if (n == 10) |
| return; |
| |
| recurser_void (n + 1); |
| } |
| |
| void *trackpoint; |
| |
| void track (int n) |
| { |
| char stackpos[1]; |
| |
| if (n == 0) |
| trackpoint = stackpos; |
| else if (n != 7 || trackpoint == stackpos) |
| abort (); |
| } |
