| // PR c++/17972 |
| // Origin: Michal Ostrowski <mostrows@watson.ibm.com> |
| // Testcase by Alan Modra <amodra@bigpond.net.au> |
| // { dg-do run } |
| // { dg-options "-O" } |
| // { dg-options "-O -mtune=i686" { target { { i?86-*-* x86_64-*-* } && ia32 } } } |
| |
| struct thread_info |
| { |
| short preempt_count; |
| } x; |
| |
| static inline struct thread_info *cti (void) __attribute__ ((const)); |
| static inline struct thread_info *cti (void) |
| { |
| return &x; |
| } |
| |
| void fn (void) __attribute__ ((noinline)); |
| void fn (void) |
| { |
| ++cti()->preempt_count; |
| } |
| |
| int main (void) |
| { |
| fn (); |
| return 0; |
| } |
