| //===-- asan_interceptors.cc ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of AddressSanitizer, an address sanity checker. |
| // |
| // Intercept various libc functions. |
| //===----------------------------------------------------------------------===// |
| #include "asan_interceptors.h" |
| |
| #include "asan_allocator.h" |
| #include "asan_interface.h" |
| #include "asan_internal.h" |
| #include "asan_mac.h" |
| #include "asan_mapping.h" |
| #include "asan_stack.h" |
| #include "asan_stats.h" |
| #include "asan_thread_registry.h" |
| #include "interception/interception.h" |
| |
| #include <new> |
| #include <ctype.h> |
| |
| #if defined(_WIN32) |
| // FIXME: remove when we start intercepting on Windows. Currently it's needed to |
| // define memset/memcpy intrinsics. |
| # include <intrin.h> |
| #endif // _WIN32 |
| |
| #if defined(__APPLE__) |
| // FIXME(samsonov): Gradually replace system headers with declarations of |
| // intercepted functions. |
| #include <pthread.h> |
| #include <signal.h> |
| #include <string.h> |
| #include <strings.h> |
| #endif // __APPLE__ |
| |
| namespace __asan { |
| |
| // Instruments read/write access to a single byte in memory. |
| // On error calls __asan_report_error, which aborts the program. |
| static NOINLINE void AccessAddress(uintptr_t address, bool isWrite) { |
| if (__asan_address_is_poisoned((void*)address)) { |
| GET_BP_PC_SP; |
| __asan_report_error(pc, bp, sp, address, isWrite, /* access_size */ 1); |
| } |
| } |
| |
| // We implement ACCESS_MEMORY_RANGE, ASAN_READ_RANGE, |
| // and ASAN_WRITE_RANGE as macro instead of function so |
| // that no extra frames are created, and stack trace contains |
| // relevant information only. |
| |
| // Instruments read/write access to a memory range. |
| // More complex implementation is possible, for now just |
| // checking the first and the last byte of a range. |
| #define ACCESS_MEMORY_RANGE(offset, size, isWrite) do { \ |
| if (size > 0) { \ |
| uintptr_t ptr = (uintptr_t)(offset); \ |
| AccessAddress(ptr, isWrite); \ |
| AccessAddress(ptr + (size) - 1, isWrite); \ |
| } \ |
| } while (0) |
| |
| #define ASAN_READ_RANGE(offset, size) do { \ |
| ACCESS_MEMORY_RANGE(offset, size, false); \ |
| } while (0) |
| |
| #define ASAN_WRITE_RANGE(offset, size) do { \ |
| ACCESS_MEMORY_RANGE(offset, size, true); \ |
| } while (0) |
| |
| // Behavior of functions like "memcpy" or "strcpy" is undefined |
| // if memory intervals overlap. We report error in this case. |
| // Macro is used to avoid creation of new frames. |
| static inline bool RangesOverlap(const char *offset1, size_t length1, |
| const char *offset2, size_t length2) { |
| return !((offset1 + length1 <= offset2) || (offset2 + length2 <= offset1)); |
| } |
| #define CHECK_RANGES_OVERLAP(name, _offset1, length1, _offset2, length2) do { \ |
| const char *offset1 = (const char*)_offset1; \ |
| const char *offset2 = (const char*)_offset2; \ |
| if (RangesOverlap(offset1, length1, offset2, length2)) { \ |
| Report("ERROR: AddressSanitizer %s-param-overlap: " \ |
| "memory ranges [%p,%p) and [%p, %p) overlap\n", \ |
| name, offset1, offset1 + length1, offset2, offset2 + length2); \ |
| PRINT_CURRENT_STACK(); \ |
| ShowStatsAndAbort(); \ |
| } \ |
| } while (0) |
| |
| #define ENSURE_ASAN_INITED() do { \ |
| CHECK(!asan_init_is_running); \ |
| if (!asan_inited) { \ |
| __asan_init(); \ |
| } \ |
| } while (0) |
| |
| size_t internal_strlen(const char *s) { |
| size_t i = 0; |
| while (s[i]) i++; |
| return i; |
| } |
| |
| size_t internal_strnlen(const char *s, size_t maxlen) { |
| #ifndef __APPLE__ |
| if (REAL(strnlen) != NULL) { |
| return REAL(strnlen)(s, maxlen); |
| } |
| #endif |
| size_t i = 0; |
| while (i < maxlen && s[i]) i++; |
| return i; |
| } |
| |
| char* internal_strchr(const char *s, int c) { |
| while (true) { |
| if (*s == (char)c) |
| return (char*)s; |
| if (*s == 0) |
| return NULL; |
| s++; |
| } |
| } |
| |
| void* internal_memchr(const void* s, int c, size_t n) { |
| const char* t = (char*)s; |
| for (size_t i = 0; i < n; ++i, ++t) |
| if (*t == c) |
| return (void*)t; |
| return NULL; |
| } |
| |
| int internal_memcmp(const void* s1, const void* s2, size_t n) { |
| const char* t1 = (char*)s1; |
| const char* t2 = (char*)s2; |
| for (size_t i = 0; i < n; ++i, ++t1, ++t2) |
| if (*t1 != *t2) |
| return *t1 < *t2 ? -1 : 1; |
| return 0; |
| } |
| |
| char *internal_strstr(const char *haystack, const char *needle) { |
| // This is O(N^2), but we are not using it in hot places. |
| size_t len1 = internal_strlen(haystack); |
| size_t len2 = internal_strlen(needle); |
| if (len1 < len2) return 0; |
| for (size_t pos = 0; pos <= len1 - len2; pos++) { |
| if (internal_memcmp(haystack + pos, needle, len2) == 0) |
| return (char*)haystack + pos; |
| } |
| return 0; |
| } |
| |
| char *internal_strncat(char *dst, const char *src, size_t n) { |
| size_t len = internal_strlen(dst); |
| size_t i; |
| for (i = 0; i < n && src[i]; i++) |
| dst[len + i] = src[i]; |
| dst[len + i] = 0; |
| return dst; |
| } |
| |
| int internal_strcmp(const char *s1, const char *s2) { |
| while (true) { |
| unsigned c1 = *s1; |
| unsigned c2 = *s2; |
| if (c1 != c2) return (c1 < c2) ? -1 : 1; |
| if (c1 == 0) break; |
| s1++; |
| s2++; |
| } |
| return 0; |
| } |
| |
| } // namespace __asan |
| |
| // ---------------------- Wrappers ---------------- {{{1 |
| using namespace __asan; // NOLINT |
| |
| #define OPERATOR_NEW_BODY \ |
| GET_STACK_TRACE_HERE_FOR_MALLOC;\ |
| return asan_memalign(0, size, &stack); |
| |
| #ifdef ANDROID |
| void *operator new(size_t size) { OPERATOR_NEW_BODY; } |
| void *operator new[](size_t size) { OPERATOR_NEW_BODY; } |
| #else |
| void *operator new(size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; } |
| void *operator new[](size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; } |
| void *operator new(size_t size, std::nothrow_t const&) throw() |
| { OPERATOR_NEW_BODY; } |
| void *operator new[](size_t size, std::nothrow_t const&) throw() |
| { OPERATOR_NEW_BODY; } |
| #endif |
| |
| #define OPERATOR_DELETE_BODY \ |
| GET_STACK_TRACE_HERE_FOR_FREE(ptr);\ |
| asan_free(ptr, &stack); |
| |
| void operator delete(void *ptr) throw() { OPERATOR_DELETE_BODY; } |
| void operator delete[](void *ptr) throw() { OPERATOR_DELETE_BODY; } |
| void operator delete(void *ptr, std::nothrow_t const&) throw() |
| { OPERATOR_DELETE_BODY; } |
| void operator delete[](void *ptr, std::nothrow_t const&) throw() |
| { OPERATOR_DELETE_BODY;} |
| |
| static void *asan_thread_start(void *arg) { |
| AsanThread *t = (AsanThread*)arg; |
| asanThreadRegistry().SetCurrent(t); |
| return t->ThreadStart(); |
| } |
| |
| #ifndef _WIN32 |
| INTERCEPTOR(int, pthread_create, pthread_t *thread, |
| const pthread_attr_t *attr, |
| void *(*start_routine)(void*), void *arg) { |
| GET_STACK_TRACE_HERE(kStackTraceMax); |
| int current_tid = asanThreadRegistry().GetCurrentTidOrMinusOne(); |
| AsanThread *t = AsanThread::Create(current_tid, start_routine, arg, &stack); |
| asanThreadRegistry().RegisterThread(t); |
| return REAL(pthread_create)(thread, attr, asan_thread_start, t); |
| } |
| #endif // !_WIN32 |
| |
| #if !defined(ANDROID) && !defined(_WIN32) |
| INTERCEPTOR(void*, signal, int signum, void *handler) { |
| if (!AsanInterceptsSignal(signum)) { |
| return REAL(signal)(signum, handler); |
| } |
| return NULL; |
| } |
| |
| INTERCEPTOR(int, sigaction, int signum, const struct sigaction *act, |
| struct sigaction *oldact) { |
| if (!AsanInterceptsSignal(signum)) { |
| return REAL(sigaction)(signum, act, oldact); |
| } |
| return 0; |
| } |
| #endif // !ANDROID && !_WIN32 |
| |
| INTERCEPTOR(void, longjmp, void *env, int val) { |
| __asan_handle_no_return(); |
| REAL(longjmp)(env, val); |
| } |
| |
| INTERCEPTOR(void, _longjmp, void *env, int val) { |
| __asan_handle_no_return(); |
| REAL(_longjmp)(env, val); |
| } |
| |
| INTERCEPTOR(void, siglongjmp, void *env, int val) { |
| __asan_handle_no_return(); |
| REAL(siglongjmp)(env, val); |
| } |
| |
| #if ASAN_HAS_EXCEPTIONS == 1 |
| #ifdef __APPLE__ |
| extern "C" void __cxa_throw(void *a, void *b, void *c); |
| #endif // __APPLE__ |
| |
| INTERCEPTOR(void, __cxa_throw, void *a, void *b, void *c) { |
| CHECK(REAL(__cxa_throw)); |
| __asan_handle_no_return(); |
| REAL(__cxa_throw)(a, b, c); |
| } |
| #endif |
| |
| // intercept mlock and friends. |
| // Since asan maps 16T of RAM, mlock is completely unfriendly to asan. |
| // All functions return 0 (success). |
| static void MlockIsUnsupported() { |
| static bool printed = 0; |
| if (printed) return; |
| printed = true; |
| Printf("INFO: AddressSanitizer ignores mlock/mlockall/munlock/munlockall\n"); |
| } |
| |
| extern "C" { |
| INTERCEPTOR_ATTRIBUTE |
| int mlock(const void *addr, size_t len) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| INTERCEPTOR_ATTRIBUTE |
| int munlock(const void *addr, size_t len) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| INTERCEPTOR_ATTRIBUTE |
| int mlockall(int flags) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| INTERCEPTOR_ATTRIBUTE |
| int munlockall(void) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| } // extern "C" |
| |
| static inline int CharCmp(unsigned char c1, unsigned char c2) { |
| return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1; |
| } |
| |
| static inline int CharCaseCmp(unsigned char c1, unsigned char c2) { |
| int c1_low = tolower(c1); |
| int c2_low = tolower(c2); |
| return c1_low - c2_low; |
| } |
| |
| INTERCEPTOR(int, memcmp, const void *a1, const void *a2, size_t size) { |
| ENSURE_ASAN_INITED(); |
| unsigned char c1 = 0, c2 = 0; |
| const unsigned char *s1 = (const unsigned char*)a1; |
| const unsigned char *s2 = (const unsigned char*)a2; |
| size_t i; |
| for (i = 0; i < size; i++) { |
| c1 = s1[i]; |
| c2 = s2[i]; |
| if (c1 != c2) break; |
| } |
| ASAN_READ_RANGE(s1, Min(i + 1, size)); |
| ASAN_READ_RANGE(s2, Min(i + 1, size)); |
| return CharCmp(c1, c2); |
| } |
| |
| INTERCEPTOR(void*, memcpy, void *to, const void *from, size_t size) { |
| // memcpy is called during __asan_init() from the internals |
| // of printf(...). |
| if (asan_init_is_running) { |
| return REAL(memcpy)(to, from, size); |
| } |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_intrin) { |
| if (to != from) { |
| // We do not treat memcpy with to==from as a bug. |
| // See http://llvm.org/bugs/show_bug.cgi?id=11763. |
| CHECK_RANGES_OVERLAP("memcpy", to, size, from, size); |
| } |
| ASAN_WRITE_RANGE(from, size); |
| ASAN_READ_RANGE(to, size); |
| } |
| return REAL(memcpy)(to, from, size); |
| } |
| |
| INTERCEPTOR(void*, memmove, void *to, const void *from, size_t size) { |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_intrin) { |
| ASAN_WRITE_RANGE(from, size); |
| ASAN_READ_RANGE(to, size); |
| } |
| return REAL(memmove)(to, from, size); |
| } |
| |
| INTERCEPTOR(void*, memset, void *block, int c, size_t size) { |
| // memset is called inside INTERCEPT_FUNCTION on Mac. |
| if (asan_init_is_running) { |
| return REAL(memset)(block, c, size); |
| } |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_intrin) { |
| ASAN_WRITE_RANGE(block, size); |
| } |
| return REAL(memset)(block, c, size); |
| } |
| |
| INTERCEPTOR(char*, strchr, const char *str, int c) { |
| ENSURE_ASAN_INITED(); |
| char *result = REAL(strchr)(str, c); |
| if (FLAG_replace_str) { |
| size_t bytes_read = (result ? result - str : REAL(strlen)(str)) + 1; |
| ASAN_READ_RANGE(str, bytes_read); |
| } |
| return result; |
| } |
| |
| #ifdef __linux__ |
| INTERCEPTOR(char*, index, const char *string, int c) |
| ALIAS(WRAPPER_NAME(strchr)); |
| #else |
| DEFINE_REAL(char*, index, const char *string, int c); |
| #endif |
| |
| #ifdef ANDROID |
| DEFINE_REAL(int, sigaction, int signum, const struct sigaction *act, |
| struct sigaction *oldact); |
| #endif |
| |
| INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) { |
| ENSURE_ASAN_INITED(); |
| unsigned char c1, c2; |
| size_t i; |
| for (i = 0; ; i++) { |
| c1 = (unsigned char)s1[i]; |
| c2 = (unsigned char)s2[i]; |
| if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; |
| } |
| ASAN_READ_RANGE(s1, i + 1); |
| ASAN_READ_RANGE(s2, i + 1); |
| return CharCaseCmp(c1, c2); |
| } |
| |
| INTERCEPTOR(char*, strcat, char *to, const char *from) { // NOLINT |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_str) { |
| size_t from_length = REAL(strlen)(from); |
| ASAN_READ_RANGE(from, from_length + 1); |
| if (from_length > 0) { |
| size_t to_length = REAL(strlen)(to); |
| ASAN_READ_RANGE(to, to_length); |
| ASAN_WRITE_RANGE(to + to_length, from_length + 1); |
| CHECK_RANGES_OVERLAP("strcat", to, to_length + 1, from, from_length + 1); |
| } |
| } |
| return REAL(strcat)(to, from); // NOLINT |
| } |
| |
| INTERCEPTOR(int, strcmp, const char *s1, const char *s2) { |
| if (!asan_inited) { |
| return internal_strcmp(s1, s2); |
| } |
| unsigned char c1, c2; |
| size_t i; |
| for (i = 0; ; i++) { |
| c1 = (unsigned char)s1[i]; |
| c2 = (unsigned char)s2[i]; |
| if (c1 != c2 || c1 == '\0') break; |
| } |
| ASAN_READ_RANGE(s1, i + 1); |
| ASAN_READ_RANGE(s2, i + 1); |
| return CharCmp(c1, c2); |
| } |
| |
| INTERCEPTOR(char*, strcpy, char *to, const char *from) { // NOLINT |
| // strcpy is called from malloc_default_purgeable_zone() |
| // in __asan::ReplaceSystemAlloc() on Mac. |
| if (asan_init_is_running) { |
| return REAL(strcpy)(to, from); // NOLINT |
| } |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_str) { |
| size_t from_size = REAL(strlen)(from) + 1; |
| CHECK_RANGES_OVERLAP("strcpy", to, from_size, from, from_size); |
| ASAN_READ_RANGE(from, from_size); |
| ASAN_WRITE_RANGE(to, from_size); |
| } |
| return REAL(strcpy)(to, from); // NOLINT |
| } |
| |
| INTERCEPTOR(char*, strdup, const char *s) { |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_str) { |
| size_t length = REAL(strlen)(s); |
| ASAN_READ_RANGE(s, length + 1); |
| } |
| return REAL(strdup)(s); |
| } |
| |
| INTERCEPTOR(size_t, strlen, const char *s) { |
| // strlen is called from malloc_default_purgeable_zone() |
| // in __asan::ReplaceSystemAlloc() on Mac. |
| if (asan_init_is_running) { |
| return REAL(strlen)(s); |
| } |
| ENSURE_ASAN_INITED(); |
| size_t length = REAL(strlen)(s); |
| if (FLAG_replace_str) { |
| ASAN_READ_RANGE(s, length + 1); |
| } |
| return length; |
| } |
| |
| INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, size_t n) { |
| ENSURE_ASAN_INITED(); |
| unsigned char c1 = 0, c2 = 0; |
| size_t i; |
| for (i = 0; i < n; i++) { |
| c1 = (unsigned char)s1[i]; |
| c2 = (unsigned char)s2[i]; |
| if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; |
| } |
| ASAN_READ_RANGE(s1, Min(i + 1, n)); |
| ASAN_READ_RANGE(s2, Min(i + 1, n)); |
| return CharCaseCmp(c1, c2); |
| } |
| |
| INTERCEPTOR(int, strncmp, const char *s1, const char *s2, size_t size) { |
| // strncmp is called from malloc_default_purgeable_zone() |
| // in __asan::ReplaceSystemAlloc() on Mac. |
| if (asan_init_is_running) { |
| return REAL(strncmp)(s1, s2, size); |
| } |
| unsigned char c1 = 0, c2 = 0; |
| size_t i; |
| for (i = 0; i < size; i++) { |
| c1 = (unsigned char)s1[i]; |
| c2 = (unsigned char)s2[i]; |
| if (c1 != c2 || c1 == '\0') break; |
| } |
| ASAN_READ_RANGE(s1, Min(i + 1, size)); |
| ASAN_READ_RANGE(s2, Min(i + 1, size)); |
| return CharCmp(c1, c2); |
| } |
| |
| INTERCEPTOR(char*, strncpy, char *to, const char *from, size_t size) { |
| ENSURE_ASAN_INITED(); |
| if (FLAG_replace_str) { |
| size_t from_size = Min(size, internal_strnlen(from, size) + 1); |
| CHECK_RANGES_OVERLAP("strncpy", to, from_size, from, from_size); |
| ASAN_READ_RANGE(from, from_size); |
| ASAN_WRITE_RANGE(to, size); |
| } |
| return REAL(strncpy)(to, from, size); |
| } |
| |
| #ifndef __APPLE__ |
| INTERCEPTOR(size_t, strnlen, const char *s, size_t maxlen) { |
| ENSURE_ASAN_INITED(); |
| size_t length = REAL(strnlen)(s, maxlen); |
| if (FLAG_replace_str) { |
| ASAN_READ_RANGE(s, Min(length + 1, maxlen)); |
| } |
| return length; |
| } |
| #endif |
| |
| // ---------------------- InitializeAsanInterceptors ---------------- {{{1 |
| namespace __asan { |
| void InitializeAsanInterceptors() { |
| #ifndef __APPLE__ |
| CHECK(INTERCEPT_FUNCTION(index)); |
| #else |
| CHECK(OVERRIDE_FUNCTION(index, WRAP(strchr))); |
| #endif |
| CHECK(INTERCEPT_FUNCTION(memcmp)); |
| CHECK(INTERCEPT_FUNCTION(memmove)); |
| #ifdef __APPLE__ |
| // Wrap memcpy() on OS X 10.6 only, because on 10.7 memcpy() and memmove() |
| // are resolved into memmove$VARIANT$sse42. |
| // See also http://code.google.com/p/address-sanitizer/issues/detail?id=34. |
| // TODO(glider): need to check dynamically that memcpy() and memmove() are |
| // actually the same function. |
| if (GetMacosVersion() == MACOS_VERSION_SNOW_LEOPARD) { |
| CHECK(INTERCEPT_FUNCTION(memcpy)); |
| } else { |
| REAL(memcpy) = REAL(memmove); |
| } |
| #else |
| // Always wrap memcpy() on non-Darwin platforms. |
| CHECK(INTERCEPT_FUNCTION(memcpy)); |
| #endif |
| CHECK(INTERCEPT_FUNCTION(memset)); |
| CHECK(INTERCEPT_FUNCTION(strcasecmp)); |
| CHECK(INTERCEPT_FUNCTION(strcat)); // NOLINT |
| CHECK(INTERCEPT_FUNCTION(strchr)); |
| CHECK(INTERCEPT_FUNCTION(strcmp)); |
| CHECK(INTERCEPT_FUNCTION(strcpy)); // NOLINT |
| CHECK(INTERCEPT_FUNCTION(strdup)); |
| CHECK(INTERCEPT_FUNCTION(strlen)); |
| CHECK(INTERCEPT_FUNCTION(strncasecmp)); |
| CHECK(INTERCEPT_FUNCTION(strncmp)); |
| CHECK(INTERCEPT_FUNCTION(strncpy)); |
| |
| #ifndef ANDROID |
| CHECK(INTERCEPT_FUNCTION(sigaction)); |
| CHECK(INTERCEPT_FUNCTION(signal)); |
| #endif |
| |
| CHECK(INTERCEPT_FUNCTION(longjmp)); |
| CHECK(INTERCEPT_FUNCTION(_longjmp)); |
| INTERCEPT_FUNCTION(__cxa_throw); |
| CHECK(INTERCEPT_FUNCTION(pthread_create)); |
| |
| #ifdef _WIN32 |
| // FIXME: We don't intercept properly on Windows yet, so use the original |
| // functions for now. |
| REAL(memcpy) = memcpy; |
| REAL(memset) = memset; |
| #endif |
| |
| #ifdef __APPLE__ |
| CHECK(INTERCEPT_FUNCTION(dispatch_async_f)); |
| CHECK(INTERCEPT_FUNCTION(dispatch_sync_f)); |
| CHECK(INTERCEPT_FUNCTION(dispatch_after_f)); |
| CHECK(INTERCEPT_FUNCTION(dispatch_barrier_async_f)); |
| CHECK(INTERCEPT_FUNCTION(dispatch_group_async_f)); |
| // We don't need to intercept pthread_workqueue_additem_np() to support the |
| // libdispatch API, but it helps us to debug the unsupported functions. Let's |
| // intercept it only during verbose runs. |
| if (FLAG_v >= 2) { |
| CHECK(INTERCEPT_FUNCTION(pthread_workqueue_additem_np)); |
| } |
| // Normally CFStringCreateCopy should not copy constant CF strings. |
| // Replacing the default CFAllocator causes constant strings to be copied |
| // rather than just returned, which leads to bugs in big applications like |
| // Chromium and WebKit, see |
| // http://code.google.com/p/address-sanitizer/issues/detail?id=10 |
| // Until this problem is fixed we need to check that the string is |
| // non-constant before calling CFStringCreateCopy. |
| CHECK(INTERCEPT_FUNCTION(CFStringCreateCopy)); |
| #else |
| // On Darwin siglongjmp tailcalls longjmp, so we don't want to intercept it |
| // there. |
| CHECK(INTERCEPT_FUNCTION(siglongjmp)); |
| #endif |
| |
| #ifndef __APPLE__ |
| CHECK(INTERCEPT_FUNCTION(strnlen)); |
| #endif |
| if (FLAG_v > 0) { |
| Printf("AddressSanitizer: libc interceptors initialized\n"); |
| } |
| } |
| |
| } // namespace __asan |