32 lines · cpp
1// Intercept the implicit 'this' argument of class member functions.2//3// RUN: %clangxx_xray -g -std=c++11 %s -o %t4// RUN: rm -f log-args-this-*5// RUN: env XRAY_OPTIONS="patch_premain=true verbosity=1 xray_logfile_base=log-args-this-" %run %t6 7// REQUIRES: target={{(aarch64|x86_64)-.*}}8 9#include "xray/xray_interface.h"10#include <cassert>11 12class A {13 public:14 [[clang::xray_always_instrument, clang::xray_log_args(1)]] void f() {15 // does nothing.16 }17};18 19volatile uint64_t captured = 0;20 21void handler(int32_t, XRayEntryType, uint64_t arg1) {22 captured = arg1;23}24 25int 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}32