//===-- asan_flags.h -------------------------------------------*- 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. // // ASan runtime flags. //===----------------------------------------------------------------------===// #ifndef ASAN_FLAGS_H #define ASAN_FLAGS_H #include "sanitizer/common_interface_defs.h" // ASan flag values can be defined in three ways: // 1) initialized with default values at startup. // 2) overriden from string returned by user-specified function // __asan_default_options(). // 3) overriden from env variable ASAN_OPTIONS. namespace __asan { struct Flags { // Size (in bytes) of quarantine used to detect use-after-free errors. // Lower value may reduce memory usage but increase the chance of // false negatives. int quarantine_size; // If set, uses in-process symbolizer from common sanitizer runtime. bool symbolize; // Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output). int verbosity; // Size (in bytes) of redzones around heap objects. // Requirement: redzone >= 32, is a power of two. int redzone; // If set, prints some debugging information and does additional checks. bool debug; // Controls the way to handle globals (0 - don't detect buffer overflow // on globals, 1 - detect buffer overflow, 2 - print data about registered // globals). int report_globals; // If set, attempts to catch initialization order issues. bool check_initialization_order; // Max number of stack frames kept for each allocation. int malloc_context_size; // If set, uses custom wrappers and replacements for libc string functions // to find more errors. bool replace_str; // If set, uses custom wrappers for memset/memcpy/memmove intinsics. bool replace_intrin; // Used on Mac only. See comments in asan_mac.cc and asan_malloc_mac.cc. bool replace_cfallocator; // Used on Mac only. bool mac_ignore_invalid_free; // ASan allocator flag. See asan_allocator.cc. bool use_fake_stack; // ASan allocator flag. Sets the maximal size of allocation request // that would return memory filled with zero bytes. int max_malloc_fill_size; // Override exit status if something was reported. int exitcode; // If set, user may manually mark memory regions as poisoned or unpoisoned. bool allow_user_poisoning; // Number of seconds to sleep between printing an error report and // terminating application. Useful for debug purposes (when one needs // to attach gdb, for example). int sleep_before_dying; // If set, registers ASan custom segv handler. bool handle_segv; // If set, uses alternate stack for signal handling. bool use_sigaltstack; // Allow the users to work around the bug in Nvidia drivers prior to 295.*. bool check_malloc_usable_size; // If set, explicitly unmaps (huge) shadow at exit. bool unmap_shadow_on_exit; // If set, calls abort() instead of _exit() after printing an error report. bool abort_on_error; // If set, prints ASan exit stats even after program terminates successfully. bool atexit; // By default, disable core dumper on 64-bit - it makes little sense // to dump 16T+ core. bool disable_core; // Allow the tool to re-exec the program. This may interfere badly with the // debugger. bool allow_reexec; // Strips this prefix from file paths in error reports. const char *strip_path_prefix; // If set, prints not only thread creation stacks for threads in error report, // but also thread creation stacks for threads that created those threads, // etc. up to main thread. bool print_full_thread_history; }; Flags *flags(); void InitializeFlags(Flags *f, const char *env); } // namespace __asan #endif // ASAN_FLAGS_H