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// RUN: %clangxx %s -o %t -g && %run %t 2>&1 | FileCheck %s
// REQUIRES: internal_symbolizer
#include <assert.h>
#include <dlfcn.h>
#include <link.h>
#include <sanitizer/hwasan_interface.h>
#include <sanitizer/msan_interface.h>
#include <string.h>
#include <string>
#include <vector>
extern "C" {
bool __sanitizer_symbolize_code(const char *ModuleName, uint64_t ModuleOffset,
char *Buffer, int MaxLength,
bool SymbolizeInlineFrames);
bool __sanitizer_symbolize_data(const char *ModuleName, uint64_t ModuleOffset,
char *Buffer, int MaxLength);
bool __sanitizer_symbolize_frame(const char *ModuleName, uint64_t ModuleOffset,
char *Buffer, int MaxLength);
void __sanitizer_print_stack_trace();
bool __sanitizer_symbolize_demangle(const char *Name, char *Buffer,
int MaxLength);
}
struct ScopedInSymbolizer {
#if defined(__has_feature)
# if __has_feature(memory_sanitizer)
ScopedInSymbolizer() { __msan_scoped_disable_interceptor_checks(); }
~ScopedInSymbolizer() { __msan_scoped_enable_interceptor_checks(); }
# endif
#endif
};
struct FrameInfo {
int line;
std::string file;
std::string function;
void *address;
};
__attribute__((noinline)) void *GetPC() { return __builtin_return_address(0); }
__attribute__((always_inline)) FrameInfo InlineFunction() {
void *address = GetPC();
return {0, "", "",
reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(address) - 1)};
}
__attribute__((noinline)) FrameInfo NoInlineFunction() {
void *address = GetPC();
return {0, "", "",
reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(address) - 1)};
}
template <int N> struct A {
template <class T> FrameInfo RecursiveTemplateFunction(const T &t);
};
template <int N>
template <class T>
__attribute__((noinline)) FrameInfo A<N>::RecursiveTemplateFunction(const T &) {
std::vector<T> t;
return A<N - 1>().RecursiveTemplateFunction(t);
}
template <>
template <class T>
__attribute__((noinline)) FrameInfo A<0>::RecursiveTemplateFunction(const T &) {
return NoInlineFunction();
}
__attribute__((no_sanitize_memory)) std::pair<const char *, uint64_t>
GetModuleAndOffset(const void *address) {
Dl_info di;
link_map *lm = nullptr;
#if __has_feature(hwaddress_sanitizer)
address = __hwasan_tag_pointer(address, 0);
#endif
assert(
dladdr1(address, &di, reinterpret_cast<void **>(&lm), RTLD_DL_LINKMAP));
return {di.dli_fname, reinterpret_cast<uint64_t>(address) - lm->l_addr};
}
std::string Symbolize(FrameInfo frame) {
auto modul_offset = GetModuleAndOffset(frame.address);
char buffer[1024] = {};
ScopedInSymbolizer in_symbolizer;
assert(__sanitizer_symbolize_code(modul_offset.first, modul_offset.second,
buffer, std::size(buffer), true));
return buffer;
}
std::string GetRegex(const FrameInfo &frame) {
return frame.function + "[^\\n]*\\n[^\\n]*" + frame.file + ":" +
std::to_string(frame.line);
}
void TestInline() {
auto frame = InlineFunction();
fprintf(stderr, "%s: %s\n", __FUNCTION__, Symbolize(frame).c_str());
// CHECK-LABEL: TestInline: InlineFunction()
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 58]]
// CHECK-NEXT: TestInline()
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 5]]
}
void TestNoInline() {
auto frame = NoInlineFunction();
fprintf(stderr, "%s: %s\n", __FUNCTION__, Symbolize(frame).c_str());
// CHECK-LABEL: TestNoInline: NoInlineFunction()
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 61]]
}
void TestLongFunctionNames() {
auto frame = A<10>().RecursiveTemplateFunction(0);
fprintf(stderr, "%s: %s\n", __FUNCTION__, Symbolize(frame).c_str());
// CHECK-LABEL: TestLongFunctionNames: NoInlineFunction()
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 68]]
}
std::string SymbolizeStaticVar() {
static int var = 1;
auto modul_offset = GetModuleAndOffset(&var);
char buffer[1024] = {};
ScopedInSymbolizer in_symbolizer;
assert(__sanitizer_symbolize_data(modul_offset.first, modul_offset.second,
buffer, std::size(buffer)));
return buffer;
}
void TestData() {
fprintf(stderr, "%s: %s\n", __FUNCTION__, SymbolizeStaticVar().c_str());
// CHECK-LABEL: TestData: SymbolizeStaticVar[abi:cxx11]()::var
// CHECK-NEXT: {{[0-9]+ +[0-9]+}}
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 13]]
}
__attribute__((noinline)) std::string SymbolizeLocalVars(const void *pc) {
auto modul_offset = GetModuleAndOffset(pc);
char buffer[1024] = {};
ScopedInSymbolizer in_symbolizer;
__sanitizer_symbolize_frame(modul_offset.first, modul_offset.second, buffer,
std::size(buffer));
return buffer;
}
__attribute__((
noinline,
no_sanitize_address /* Asan merges allocas destroying variable DI */)) void
TestFrame() {
volatile int var = 1;
void *address = GetPC();
fprintf(stderr, "%s: %s\n", __FUNCTION__,
SymbolizeLocalVars(address).c_str());
// CHECK-LABEL: TestFrame: TestFrame
// CHECK-NEXT: var
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 6]]
// CHECK-NEXT: {{-?[0-9]+ +[0-9]+}}
// CHECK-NEXT: TestFrame
// CHECK-NEXT: address
// CHECK-NEXT: internal_symbolizer.cpp:[[# @LINE - 9]]
// CHECK-NEXT: {{-?[0-9]+ +[0-9]+}}
}
void TestDemangle() {
char out[128];
assert(!__sanitizer_symbolize_demangle("1A", out, sizeof(out)));
const char name[] = "_Z3fooi";
for (int i = 1; i < sizeof(out); ++i) {
memset(out, 1, sizeof(out));
assert(__sanitizer_symbolize_demangle(name, out, i) == (i > 8));
assert(i < 9 || 0 == strncmp(out, "foo(int)", i - 1));
}
}
int main() {
TestInline();
TestNoInline();
TestLongFunctionNames();
TestData();
TestFrame();
TestDemangle();
}
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