compiler-rt/test/xray/TestCases/Posix/arg1-logging-implicit-this.cpp

   1 // Intercept the implicit 'this' argument of class member functions.
   2 //
   3 // RUN: %clangxx_xray -g -std=c++11 %s -o %t
   4 // RUN: rm -f log-args-this-*
   5 // RUN: env XRAY_OPTIONS="patch_premain=true verbosity=1 xray_logfile_base=log-args-this-" %run %t
   6
   7 // REQUIRES: target={{(aarch64|x86_64)-.*}}
   8
   9 #include "xray/xray_interface.h"
  10 #include <cassert>
  11
  12 class A {
  13  public:
  14   [[clang::xray_always_instrument, clang::xray_log_args(1)]] void f() {
  15     // does nothing.
  16   }
  17 };
  18
  19 volatile uint64_t captured = 0;
  20
  21 void handler(int32_t, XRayEntryType, uint64_t arg1) {
  22   captured = arg1;
  23 }
  24
  25 int main() {
  26   __xray_set_handler_arg1(handler);
  27   A instance;
  28   instance.f();
  29   __xray_remove_handler_arg1();
  30   assert(captured == (uint64_t)&instance);
  31 }