1 | volatile int x; |
2 | |
3 | void __attribute__((noinline)) sink() { |
4 | x++; //% self.filecheck("bt", "main.cpp", "-implicit-check-not=artificial") |
5 | // CHECK: frame #0: 0x{{[0-9a-f]+}} a.out`sink() at main.cpp:[[@LINE-1]]:4 |
6 | // CHECK-NEXT: func3{{.*}} [artificial] |
7 | // CHECK-NEXT: func1{{.*}} [artificial] |
8 | // CHECK-NEXT: main{{.*}} |
9 | } |
10 | |
11 | void __attribute__((noinline)) func3() { sink(); /* tail */ } |
12 | |
13 | void __attribute__((noinline)) func2() { sink(); /* tail */ } |
14 | |
15 | void __attribute__((noinline)) func1() { func3(); /* tail */ } |
16 | |
17 | int __attribute__((disable_tail_calls)) main(int argc, char **) { |
18 | // The sequences `main -> func1 -> f{2,3} -> sink` are both plausible. Test |
19 | // that lldb picks the latter sequence. |
20 | func1(); |
21 | return 0; |
22 | } |
23 | |