compiler-rt/test/sanitizer_common/TestCases/Linux/symbolize_stack_fp.cpp

   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
  19 template <int N>
  20 struct A {
  21   template <class T>
  22   void RecursiveTemplateFunction(const T &t);
  23 };
  24
  25 template <int N>
  26 template <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
  32 template <>
  33 template <class T>
  34 __attribute__((noinline)) void A<0>::RecursiveTemplateFunction(const T &) {
  35   __sanitizer_print_stack_trace();
  36 }
  37
  38 int main() {
  39   // CHECK: {{vector<.*vector<.*vector<.*vector<.*vector<}}
  40   A<7>().RecursiveTemplateFunction(0);
  41 }