1 //===-- main.cpp ------------------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
11 void __attribute__((noinline)) sink() {
12 x++; //% self.filecheck("bt", "main.cpp")
13 // CHECK-NOT: func{{[23]}}_amb
16 void __attribute__((noinline)) func3_amb() { sink(); /* tail */ }
18 void __attribute__((noinline)) func2_amb() { sink(); /* tail */ }
20 void __attribute__((noinline)) func1() {
22 func2_amb(); /* tail */
24 func3_amb(); /* tail */
27 int __attribute__((disable_tail_calls)) main(int argc, char **) {
28 // The sequences `main -> func1 -> f{2,3}_amb -> sink` are both plausible. Test
29 // that lldb doesn't attempt to guess which one occurred.