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llvm-project/compiler-rt/lib/lsan/lsan_interceptors.cpp
Dmitry Vyukov 1377179396 sanitizer_common: initialize sanitizer runtimes lazily from signal interceptors 
Currently if a program calls sigaction very early (before non-lazy sanitizer
initialization, in particular if .preinit_array initialization is not enabled),
then sigaction will wrongly fail since the interceptor is not initialized yet.

In all other interceptors we do lazy runtime initialization for this reason,
but we don't do it in the signal interceptors.
Do lazy runtime initialization in signal interceptors as well.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D155188
2023-07-13 16:28:25 +02:00

590 lines
18 KiB
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//=-- lsan_interceptors.cpp -----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of LeakSanitizer.
// Interceptors for standalone LSan.
//
//===----------------------------------------------------------------------===//
#include "interception/interception.h"
#include "sanitizer_common/sanitizer_allocator.h"
#include "sanitizer_common/sanitizer_allocator_dlsym.h"
#include "sanitizer_common/sanitizer_allocator_report.h"
#include "sanitizer_common/sanitizer_atomic.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_flags.h"
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "sanitizer_common/sanitizer_linux.h"
#include "sanitizer_common/sanitizer_platform_interceptors.h"
#include "sanitizer_common/sanitizer_platform_limits_netbsd.h"
#include "sanitizer_common/sanitizer_platform_limits_posix.h"
#if SANITIZER_POSIX
#include "sanitizer_common/sanitizer_posix.h"
#endif
#include "sanitizer_common/sanitizer_tls_get_addr.h"
#include "lsan.h"
#include "lsan_allocator.h"
#include "lsan_common.h"
#include "lsan_thread.h"
#include <stddef.h>
using namespace __lsan;
extern "C" {
int pthread_attr_init(void *attr);
int pthread_attr_destroy(void *attr);
int pthread_attr_getdetachstate(void *attr, int *v);
int pthread_key_create(unsigned *key, void (*destructor)(void* v));
int pthread_setspecific(unsigned key, const void *v);
}
struct DlsymAlloc : DlSymAllocator<DlsymAlloc> {
static bool UseImpl() { return lsan_init_is_running; }
static void OnAllocate(const void *ptr, uptr size) {
#if CAN_SANITIZE_LEAKS
// Suppress leaks from dlerror(). Previously dlsym hack on global array was
// used by leak sanitizer as a root region.
__lsan_register_root_region(ptr, size);
#endif
}
static void OnFree(const void *ptr, uptr size) {
#if CAN_SANITIZE_LEAKS
__lsan_unregister_root_region(ptr, size);
#endif
}
};
///// Malloc/free interceptors. /////
namespace std {
struct nothrow_t;
enum class align_val_t: size_t;
}
#if !SANITIZER_APPLE
INTERCEPTOR(void*, malloc, uptr size) {
if (DlsymAlloc::Use())
return DlsymAlloc::Allocate(size);
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_malloc(size, stack);
}
INTERCEPTOR(void, free, void *p) {
if (DlsymAlloc::PointerIsMine(p))
return DlsymAlloc::Free(p);
ENSURE_LSAN_INITED;
lsan_free(p);
}
INTERCEPTOR(void*, calloc, uptr nmemb, uptr size) {
if (DlsymAlloc::Use())
return DlsymAlloc::Callocate(nmemb, size);
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_calloc(nmemb, size, stack);
}
INTERCEPTOR(void *, realloc, void *ptr, uptr size) {
if (DlsymAlloc::Use() || DlsymAlloc::PointerIsMine(ptr))
return DlsymAlloc::Realloc(ptr, size);
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_realloc(ptr, size, stack);
}
INTERCEPTOR(void*, reallocarray, void *q, uptr nmemb, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_reallocarray(q, nmemb, size, stack);
}
INTERCEPTOR(int, posix_memalign, void **memptr, uptr alignment, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_posix_memalign(memptr, alignment, size, stack);
}
INTERCEPTOR(void*, valloc, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_valloc(size, stack);
}
#endif // !SANITIZER_APPLE
#if SANITIZER_INTERCEPT_MEMALIGN
INTERCEPTOR(void*, memalign, uptr alignment, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_memalign(alignment, size, stack);
}
#define LSAN_MAYBE_INTERCEPT_MEMALIGN INTERCEPT_FUNCTION(memalign)
#else
#define LSAN_MAYBE_INTERCEPT_MEMALIGN
#endif // SANITIZER_INTERCEPT_MEMALIGN
#if SANITIZER_INTERCEPT___LIBC_MEMALIGN
INTERCEPTOR(void *, __libc_memalign, uptr alignment, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
void *res = lsan_memalign(alignment, size, stack);
DTLS_on_libc_memalign(res, size);
return res;
}
#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN INTERCEPT_FUNCTION(__libc_memalign)
#else
#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN
#endif // SANITIZER_INTERCEPT___LIBC_MEMALIGN
#if SANITIZER_INTERCEPT_ALIGNED_ALLOC
INTERCEPTOR(void*, aligned_alloc, uptr alignment, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_aligned_alloc(alignment, size, stack);
}
#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC INTERCEPT_FUNCTION(aligned_alloc)
#else
#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC
#endif
#if SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE
INTERCEPTOR(uptr, malloc_usable_size, void *ptr) {
ENSURE_LSAN_INITED;
return GetMallocUsableSize(ptr);
}
#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE \
INTERCEPT_FUNCTION(malloc_usable_size)
#else
#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE
#endif
#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
struct fake_mallinfo {
int x[10];
};
INTERCEPTOR(struct fake_mallinfo, mallinfo, void) {
struct fake_mallinfo res;
internal_memset(&res, 0, sizeof(res));
return res;
}
#define LSAN_MAYBE_INTERCEPT_MALLINFO INTERCEPT_FUNCTION(mallinfo)
INTERCEPTOR(int, mallopt, int cmd, int value) {
return 0;
}
#define LSAN_MAYBE_INTERCEPT_MALLOPT INTERCEPT_FUNCTION(mallopt)
#else
#define LSAN_MAYBE_INTERCEPT_MALLINFO
#define LSAN_MAYBE_INTERCEPT_MALLOPT
#endif // SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
#if SANITIZER_INTERCEPT_PVALLOC
INTERCEPTOR(void*, pvalloc, uptr size) {
ENSURE_LSAN_INITED;
GET_STACK_TRACE_MALLOC;
return lsan_pvalloc(size, stack);
}
#define LSAN_MAYBE_INTERCEPT_PVALLOC INTERCEPT_FUNCTION(pvalloc)
#else
#define LSAN_MAYBE_INTERCEPT_PVALLOC
#endif // SANITIZER_INTERCEPT_PVALLOC
#if SANITIZER_INTERCEPT_CFREE
INTERCEPTOR(void, cfree, void *p) ALIAS(WRAP(free));
#define LSAN_MAYBE_INTERCEPT_CFREE INTERCEPT_FUNCTION(cfree)
#else
#define LSAN_MAYBE_INTERCEPT_CFREE
#endif // SANITIZER_INTERCEPT_CFREE
#if SANITIZER_INTERCEPT_MCHECK_MPROBE
INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) {
return 0;
}
INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) {
return 0;
}
INTERCEPTOR(int, mprobe, void *ptr) {
return 0;
}
#endif // SANITIZER_INTERCEPT_MCHECK_MPROBE
// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
#define OPERATOR_NEW_BODY(nothrow)\
ENSURE_LSAN_INITED;\
GET_STACK_TRACE_MALLOC;\
void *res = lsan_malloc(size, stack);\
if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\
return res;
#define OPERATOR_NEW_BODY_ALIGN(nothrow)\
ENSURE_LSAN_INITED;\
GET_STACK_TRACE_MALLOC;\
void *res = lsan_memalign((uptr)align, size, stack);\
if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\
return res;
#define OPERATOR_DELETE_BODY\
ENSURE_LSAN_INITED;\
lsan_free(ptr);
// On OS X it's not enough to just provide our own 'operator new' and
// 'operator delete' implementations, because they're going to be in the runtime
// dylib, and the main executable will depend on both the runtime dylib and
// libstdc++, each of has its implementation of new and delete.
// To make sure that C++ allocation/deallocation operators are overridden on
// OS X we need to intercept them using their mangled names.
#if !SANITIZER_APPLE
INTERCEPTOR_ATTRIBUTE
void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new(size_t size, std::nothrow_t const&)
{ OPERATOR_NEW_BODY(true /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new[](size_t size, std::nothrow_t const&)
{ OPERATOR_NEW_BODY(true /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new(size_t size, std::align_val_t align)
{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new[](size_t size, std::align_val_t align)
{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr, std::nothrow_t const &)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr, size_t size) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr, size_t size) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr, std::align_val_t) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr, std::align_val_t) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr, std::align_val_t, std::nothrow_t const&)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr, std::align_val_t, std::nothrow_t const&)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete(void *ptr, size_t size, std::align_val_t) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR_ATTRIBUTE
void operator delete[](void *ptr, size_t size, std::align_val_t) NOEXCEPT
{ OPERATOR_DELETE_BODY; }
#else // SANITIZER_APPLE
INTERCEPTOR(void *, _Znwm, size_t size)
{ OPERATOR_NEW_BODY(false /*nothrow*/); }
INTERCEPTOR(void *, _Znam, size_t size)
{ OPERATOR_NEW_BODY(false /*nothrow*/); }
INTERCEPTOR(void *, _ZnwmRKSt9nothrow_t, size_t size, std::nothrow_t const&)
{ OPERATOR_NEW_BODY(true /*nothrow*/); }
INTERCEPTOR(void *, _ZnamRKSt9nothrow_t, size_t size, std::nothrow_t const&)
{ OPERATOR_NEW_BODY(true /*nothrow*/); }
INTERCEPTOR(void, _ZdlPv, void *ptr)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR(void, _ZdaPv, void *ptr)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
{ OPERATOR_DELETE_BODY; }
INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
{ OPERATOR_DELETE_BODY; }
#endif // !SANITIZER_APPLE
///// Thread initialization and finalization. /////
#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD && !SANITIZER_FUCHSIA
static unsigned g_thread_finalize_key;
static void thread_finalize(void *v) {
uptr iter = (uptr)v;
if (iter > 1) {
if (pthread_setspecific(g_thread_finalize_key, (void*)(iter - 1))) {
Report("LeakSanitizer: failed to set thread key.\n");
Die();
}
return;
}
ThreadFinish();
}
#endif
#if SANITIZER_NETBSD
INTERCEPTOR(void, _lwp_exit) {
ENSURE_LSAN_INITED;
ThreadFinish();
REAL(_lwp_exit)();
}
#define LSAN_MAYBE_INTERCEPT__LWP_EXIT INTERCEPT_FUNCTION(_lwp_exit)
#else
#define LSAN_MAYBE_INTERCEPT__LWP_EXIT
#endif
#if SANITIZER_INTERCEPT_THR_EXIT
INTERCEPTOR(void, thr_exit, tid_t *state) {
ENSURE_LSAN_INITED;
ThreadFinish();
REAL(thr_exit)(state);
}
#define LSAN_MAYBE_INTERCEPT_THR_EXIT INTERCEPT_FUNCTION(thr_exit)
#else
#define LSAN_MAYBE_INTERCEPT_THR_EXIT
#endif
#if SANITIZER_INTERCEPT___CXA_ATEXIT
INTERCEPTOR(int, __cxa_atexit, void (*func)(void *), void *arg,
void *dso_handle) {
__lsan::ScopedInterceptorDisabler disabler;
return REAL(__cxa_atexit)(func, arg, dso_handle);
}
#define LSAN_MAYBE_INTERCEPT___CXA_ATEXIT INTERCEPT_FUNCTION(__cxa_atexit)
#else
#define LSAN_MAYBE_INTERCEPT___CXA_ATEXIT
#endif
#if SANITIZER_INTERCEPT_ATEXIT
INTERCEPTOR(int, atexit, void (*f)()) {
__lsan::ScopedInterceptorDisabler disabler;
return REAL(__cxa_atexit)((void (*)(void *a))f, 0, 0);
}
#define LSAN_MAYBE_INTERCEPT_ATEXIT INTERCEPT_FUNCTION(atexit)
#else
#define LSAN_MAYBE_INTERCEPT_ATEXIT
#endif
#if SANITIZER_INTERCEPT_PTHREAD_ATFORK
extern "C" {
extern int _pthread_atfork(void (*prepare)(), void (*parent)(),
void (*child)());
};
INTERCEPTOR(int, pthread_atfork, void (*prepare)(), void (*parent)(),
void (*child)()) {
__lsan::ScopedInterceptorDisabler disabler;
// REAL(pthread_atfork) cannot be called due to symbol indirections at least
// on NetBSD
return _pthread_atfork(prepare, parent, child);
}
#define LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK INTERCEPT_FUNCTION(pthread_atfork)
#else
#define LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK
#endif
#if SANITIZER_INTERCEPT_STRERROR
INTERCEPTOR(char *, strerror, int errnum) {
__lsan::ScopedInterceptorDisabler disabler;
return REAL(strerror)(errnum);
}
#define LSAN_MAYBE_INTERCEPT_STRERROR INTERCEPT_FUNCTION(strerror)
#else
#define LSAN_MAYBE_INTERCEPT_STRERROR
#endif
#if SANITIZER_POSIX
template <bool Detached>
static void *ThreadStartFunc(void *arg) {
u32 parent_tid = (uptr)arg;
uptr tid = ThreadCreate(parent_tid, Detached);
// Wait until the last iteration to maximize the chance that we are the last
// destructor to run.
#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD
if (pthread_setspecific(g_thread_finalize_key,
(void*)GetPthreadDestructorIterations())) {
Report("LeakSanitizer: failed to set thread key.\n");
Die();
}
# endif
ThreadStart(tid, GetTid());
auto self = GetThreadSelf();
auto args = GetThreadArgRetval().GetArgs(self);
void *retval = (*args.routine)(args.arg_retval);
GetThreadArgRetval().Finish(self, retval);
return retval;
}
INTERCEPTOR(int, pthread_create, void *th, void *attr,
void *(*callback)(void *), void *param) {
ENSURE_LSAN_INITED;
EnsureMainThreadIDIsCorrect();
bool detached = [attr]() {
int d = 0;
return attr && !pthread_attr_getdetachstate(attr, &d) && IsStateDetached(d);
}();
__sanitizer_pthread_attr_t myattr;
if (!attr) {
pthread_attr_init(&myattr);
attr = &myattr;
}
AdjustStackSize(attr);
uptr this_tid = GetCurrentThreadId();
int result;
{
// Ignore all allocations made by pthread_create: thread stack/TLS may be
// stored by pthread for future reuse even after thread destruction, and
// the linked list it's stored in doesn't even hold valid pointers to the
// objects, the latter are calculated by obscure pointer arithmetic.
ScopedInterceptorDisabler disabler;
GetThreadArgRetval().Create(detached, {callback, param}, [&]() -> uptr {
result = REAL(pthread_create)(
th, attr, detached ? ThreadStartFunc<true> : ThreadStartFunc<false>,
(void *)this_tid);
return result ? 0 : *(uptr *)(th);
});
}
if (attr == &myattr)
pthread_attr_destroy(&myattr);
return result;
}
INTERCEPTOR(int, pthread_join, void *thread, void **retval) {
int result;
GetThreadArgRetval().Join((uptr)thread, [&]() {
result = REAL(pthread_join)(thread, retval);
return !result;
});
return result;
}
INTERCEPTOR(int, pthread_detach, void *thread) {
int result;
GetThreadArgRetval().Detach((uptr)thread, [&]() {
result = REAL(pthread_detach)(thread);
return !result;
});
return result;
}
INTERCEPTOR(int, pthread_exit, void *retval) {
GetThreadArgRetval().Finish(GetThreadSelf(), retval);
return REAL(pthread_exit)(retval);
}
# if SANITIZER_INTERCEPT_TRYJOIN
INTERCEPTOR(int, pthread_tryjoin_np, void *thread, void **ret) {
int result;
GetThreadArgRetval().Join((uptr)thread, [&]() {
result = REAL(pthread_tryjoin_np)(thread, ret);
return !result;
});
return result;
}
# define LSAN_MAYBE_INTERCEPT_TRYJOIN INTERCEPT_FUNCTION(pthread_tryjoin_np)
# else
# define LSAN_MAYBE_INTERCEPT_TRYJOIN
# endif // SANITIZER_INTERCEPT_TRYJOIN
# if SANITIZER_INTERCEPT_TIMEDJOIN
INTERCEPTOR(int, pthread_timedjoin_np, void *thread, void **ret,
const struct timespec *abstime) {
int result;
GetThreadArgRetval().Join((uptr)thread, [&]() {
result = REAL(pthread_timedjoin_np)(thread, ret, abstime);
return !result;
});
return result;
}
# define LSAN_MAYBE_INTERCEPT_TIMEDJOIN \
INTERCEPT_FUNCTION(pthread_timedjoin_np)
# else
# define LSAN_MAYBE_INTERCEPT_TIMEDJOIN
# endif // SANITIZER_INTERCEPT_TIMEDJOIN
DEFINE_REAL_PTHREAD_FUNCTIONS
INTERCEPTOR(void, _exit, int status) {
if (status == 0 && HasReportedLeaks()) status = common_flags()->exitcode;
REAL(_exit)(status);
}
#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
#define SIGNAL_INTERCEPTOR_ENTER() ENSURE_LSAN_INITED
#include "sanitizer_common/sanitizer_signal_interceptors.inc"
#endif // SANITIZER_POSIX
namespace __lsan {
void InitializeInterceptors() {
// Fuchsia doesn't use interceptors that require any setup.
#if !SANITIZER_FUCHSIA
InitializeSignalInterceptors();
INTERCEPT_FUNCTION(malloc);
INTERCEPT_FUNCTION(free);
LSAN_MAYBE_INTERCEPT_CFREE;
INTERCEPT_FUNCTION(calloc);
INTERCEPT_FUNCTION(realloc);
LSAN_MAYBE_INTERCEPT_MEMALIGN;
LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN;
LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC;
INTERCEPT_FUNCTION(posix_memalign);
INTERCEPT_FUNCTION(valloc);
LSAN_MAYBE_INTERCEPT_PVALLOC;
LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE;
LSAN_MAYBE_INTERCEPT_MALLINFO;
LSAN_MAYBE_INTERCEPT_MALLOPT;
INTERCEPT_FUNCTION(pthread_create);
INTERCEPT_FUNCTION(pthread_join);
INTERCEPT_FUNCTION(pthread_detach);
INTERCEPT_FUNCTION(pthread_exit);
LSAN_MAYBE_INTERCEPT_TIMEDJOIN;
LSAN_MAYBE_INTERCEPT_TRYJOIN;
INTERCEPT_FUNCTION(_exit);
LSAN_MAYBE_INTERCEPT__LWP_EXIT;
LSAN_MAYBE_INTERCEPT_THR_EXIT;
LSAN_MAYBE_INTERCEPT___CXA_ATEXIT;
LSAN_MAYBE_INTERCEPT_ATEXIT;
LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK;
LSAN_MAYBE_INTERCEPT_STRERROR;
#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD
if (pthread_key_create(&g_thread_finalize_key, &thread_finalize)) {
Report("LeakSanitizer: failed to create thread key.\n");
Die();
}
#endif
#endif // !SANITIZER_FUCHSIA
}
} // namespace __lsan
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