1/// When the main program doesn't use .eh_frame, the slow unwinder does not work.
2/// Test that we can fall back to the fast unwinder.
3// RUN: %clangxx -O0 -g1 -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer %s -o %t
4// RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SEC
5// RUN: %run %t 2>&1 | FileCheck %s
6
7// On android %t is a wrapper python script so llvm-readelf will fail.
8// UNSUPPORTED: android
9
10/// Fast unwinder does not work with Thumb code
11// UNSUPPORTED: target={{.*thumb.*}}
12
13/// No .eh_frame && -g => .debug_frame
14// SEC: .debug_frame
15
16#include <sanitizer/common_interface_defs.h>
17#include <vector>
18
19template <int N>
20struct A {
21 template <class T>
22 void RecursiveTemplateFunction(const T &t);
23};
24
25template <int N>
26template <class T>
27__attribute__((noinline)) void A<N>::RecursiveTemplateFunction(const T &) {
28 std::vector<T> t;
29 return A<N - 1>().RecursiveTemplateFunction(t);
30}
31
32template <>
33template <class T>
34__attribute__((noinline)) void A<0>::RecursiveTemplateFunction(const T &) {
35 __sanitizer_print_stack_trace();
36}
37
38int main() {
39 // CHECK: {{vector<.*vector<.*vector<.*vector<.*vector<}}
40 A<7>().RecursiveTemplateFunction(0);
41}
42

source code of compiler-rt/test/sanitizer_common/TestCases/Linux/symbolize_stack_fp.cpp