Add test for logging the implicit "this" argument for C++ member functions.
Summary: This allows us to do more interesting things with the data available to C++ methods, to log the `this` pointer. Depends on D34050. Reviewers: pelikan Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34051 llvm-svn: 305545
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// Intercept the implicit 'this' argument of class member functions.
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//
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// RUN: %clangxx_xray -g -std=c++11 %s -o %t
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// RUN: rm log-args-this-* || true
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// RUN: XRAY_OPTIONS="patch_premain=true verbosity=1 xray_logfile_base=log-args-this-" %run %t
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//
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// XFAIL: arm || aarch64 || mips
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// UNSUPPORTED: powerpc64le
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#include "xray/xray_interface.h"
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#include <cassert>
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class A {
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public:
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[[clang::xray_always_instrument, clang::xray_log_args(1)]] void f() {
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// does nothing.
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}
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};
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volatile uint64_t captured = 0;
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void handler(int32_t, XRayEntryType, uint64_t arg1) {
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captured = arg1;
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}
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int main() {
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__xray_set_handler_arg1(handler);
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A instance;
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instance.f();
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__xray_remove_handler_arg1();
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assert(captured == (uint64_t)&instance);
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}
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