libsanitizer merge from upstream r250806.

libsanitizer/

2015-10-20  Maxim Ostapenko  <m.ostapenko@partner.samsung.com>

	* All source files: Merge from upstream r250806.
	* configure.ac (link_sanitizer_common): Add -lrt flag.
	* configure.tgt: Enable TSAN and LSAN for aarch64-linux targets.
	Set CXX_ABI_NEEDED=true for darwin.
	* asan/Makefile.am (asan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0 and remove unused and legacy
	DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0.
	* asan/Makefile.in: Regenerate.
	* ubsan/Makefile.am (ubsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=1.
	(libubsan_la_LIBADD): Add -lc++abi if CXX_ABI_NEEDED is true.
	* ubsan/Makefile.in: Regenerate.
	* tsan/Makefile.am (tsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0.
	* tsan/Makefile.in: Regenerate.
	* sanitizer_common/Makefile.am (sanitizer_common_files): Add new files.
	* sanitizer_common/Makefile.in: Regenerate.
	* asan/libtool-version: Bump the libasan SONAME.

From-SVN: r229111

1 files changed, 192 insertions, 0 deletions

diff --git a/libsanitizer/sanitizer_common/sanitizer_flags.inc b/libsanitizer/sanitizer_common/sanitizer_flags.inc
new file mode 100644
index 00000000000..bca1c4b4d0f
--- /dev/null
+++ b/libsanitizer/sanitizer_common/sanitizer_flags.inc
@@ -0,0 +1,192 @@
+//===-- sanitizer_flags.h ---------------------------------------*- C++ -*-===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file describes common flags available in all sanitizers.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef COMMON_FLAG
+#error "Define COMMON_FLAG prior to including this file!"
+#endif
+
+// COMMON_FLAG(Type, Name, DefaultValue, Description)
+// Supported types: bool, const char *, int, uptr.
+// Default value must be a compile-time constant.
+// Description must be a string literal.
+
+COMMON_FLAG(
+    bool, symbolize, true,
+    "If set, use the online symbolizer from common sanitizer runtime to turn "
+    "virtual addresses to file/line locations.")
+COMMON_FLAG(
+    const char *, external_symbolizer_path, nullptr,
+    "Path to external symbolizer. If empty, the tool will search $PATH for "
+    "the symbolizer.")
+COMMON_FLAG(
+    bool, allow_addr2line, false,
+    "If set, allows online symbolizer to run addr2line binary to symbolize "
+    "stack traces (addr2line will only be used if llvm-symbolizer binary is "
+    "unavailable.")
+COMMON_FLAG(const char *, strip_path_prefix, "",
+            "Strips this prefix from file paths in error reports.")
+COMMON_FLAG(bool, fast_unwind_on_check, false,
+            "If available, use the fast frame-pointer-based unwinder on "
+            "internal CHECK failures.")
+COMMON_FLAG(bool, fast_unwind_on_fatal, false,
+            "If available, use the fast frame-pointer-based unwinder on fatal "
+            "errors.")
+COMMON_FLAG(bool, fast_unwind_on_malloc, true,
+            "If available, use the fast frame-pointer-based unwinder on "
+            "malloc/free.")
+COMMON_FLAG(bool, handle_ioctl, false, "Intercept and handle ioctl requests.")
+COMMON_FLAG(int, malloc_context_size, 1,
+            "Max number of stack frames kept for each allocation/deallocation.")
+COMMON_FLAG(
+    const char *, log_path, "stderr",
+    "Write logs to \"log_path.pid\". The special values are \"stdout\" and "
+    "\"stderr\". The default is \"stderr\".")
+COMMON_FLAG(
+    bool, log_exe_name, false,
+    "Mention name of executable when reporting error and "
+    "append executable name to logs (as in \"log_path.exe_name.pid\").")
+COMMON_FLAG(
+    bool, log_to_syslog, SANITIZER_ANDROID,
+    "Write all sanitizer output to syslog in addition to other means of "
+    "logging.")
+COMMON_FLAG(
+    int, verbosity, 0,
+    "Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output).")
+COMMON_FLAG(bool, detect_leaks, true, "Enable memory leak detection.")
+COMMON_FLAG(
+    bool, leak_check_at_exit, true,
+    "Invoke leak checking in an atexit handler. Has no effect if "
+    "detect_leaks=false, or if __lsan_do_leak_check() is called before the "
+    "handler has a chance to run.")
+COMMON_FLAG(bool, allocator_may_return_null, false,
+            "If false, the allocator will crash instead of returning 0 on "
+            "out-of-memory.")
+COMMON_FLAG(bool, print_summary, true,
+            "If false, disable printing error summaries in addition to error "
+            "reports.")
+COMMON_FLAG(bool, check_printf, true, "Check printf arguments.")
+COMMON_FLAG(bool, handle_segv, SANITIZER_NEEDS_SEGV,
+            "If set, registers the tool's custom SIGSEGV/SIGBUS handler.")
+COMMON_FLAG(bool, handle_abort, false,
+            "If set, registers the tool's custom SIGABRT handler.")
+COMMON_FLAG(bool, handle_sigfpe, true,
+            "If set, registers the tool's custom SIGFPE handler.")
+COMMON_FLAG(bool, allow_user_segv_handler, false,
+            "If set, allows user to register a SEGV handler even if the tool "
+            "registers one.")
+COMMON_FLAG(bool, use_sigaltstack, true,
+            "If set, uses alternate stack for signal handling.")
+COMMON_FLAG(bool, detect_deadlocks, false,
+            "If set, deadlock detection is enabled.")
+COMMON_FLAG(
+    uptr, clear_shadow_mmap_threshold, 64 * 1024,
+    "Large shadow regions are zero-filled using mmap(NORESERVE) instead of "
+    "memset(). This is the threshold size in bytes.")
+COMMON_FLAG(const char *, color, "auto",
+            "Colorize reports: (always|never|auto).")
+COMMON_FLAG(
+    bool, legacy_pthread_cond, false,
+    "Enables support for dynamic libraries linked with libpthread 2.2.5.")
+COMMON_FLAG(bool, intercept_tls_get_addr, false, "Intercept __tls_get_addr.")
+COMMON_FLAG(bool, help, false, "Print the flag descriptions.")
+COMMON_FLAG(uptr, mmap_limit_mb, 0,
+            "Limit the amount of mmap-ed memory (excluding shadow) in Mb; "
+            "not a user-facing flag, used mosly for testing the tools")
+COMMON_FLAG(uptr, hard_rss_limit_mb, 0,
+            "Hard RSS limit in Mb."
+            " If non-zero, a background thread is spawned at startup"
+            " which periodically reads RSS and aborts the process if the"
+            " limit is reached")
+COMMON_FLAG(uptr, soft_rss_limit_mb, 0,
+            "Soft RSS limit in Mb."
+            " If non-zero, a background thread is spawned at startup"
+            " which periodically reads RSS. If the limit is reached"
+            " all subsequent malloc/new calls will fail or return NULL"
+            " (depending on the value of allocator_may_return_null)"
+            " until the RSS goes below the soft limit."
+            " This limit does not affect memory allocations other than"
+            " malloc/new.")
+COMMON_FLAG(bool, can_use_proc_maps_statm, true,
+            "If false, do not attempt to read /proc/maps/statm."
+            " Mostly useful for testing sanitizers.")
+COMMON_FLAG(
+    bool, coverage, false,
+    "If set, coverage information will be dumped at program shutdown (if the "
+    "coverage instrumentation was enabled at compile time).")
+COMMON_FLAG(bool, coverage_pcs, true,
+            "If set (and if 'coverage' is set too), the coverage information "
+            "will be dumped as a set of PC offsets for every module.")
+COMMON_FLAG(bool, coverage_order_pcs, false,
+             "If true, the PCs will be dumped in the order they've"
+             " appeared during the execution.")
+COMMON_FLAG(bool, coverage_bitset, false,
+            "If set (and if 'coverage' is set too), the coverage information "
+            "will also be dumped as a bitset to a separate file.")
+COMMON_FLAG(bool, coverage_counters, false,
+            "If set (and if 'coverage' is set too), the bitmap that corresponds"
+            " to coverage counters will be dumped.")
+COMMON_FLAG(bool, coverage_direct, SANITIZER_ANDROID,
+            "If set, coverage information will be dumped directly to a memory "
+            "mapped file. This way data is not lost even if the process is "
+            "suddenly killed.")
+COMMON_FLAG(const char *, coverage_dir, ".",
+            "Target directory for coverage dumps. Defaults to the current "
+            "directory.")
+COMMON_FLAG(bool, full_address_space, false,
+            "Sanitize complete address space; "
+            "by default kernel area on 32-bit platforms will not be sanitized")
+COMMON_FLAG(bool, print_suppressions, true,
+            "Print matched suppressions at exit.")
+COMMON_FLAG(
+    bool, disable_coredump, (SANITIZER_WORDSIZE == 64),
+    "Disable core dumping. By default, disable_core=1 on 64-bit to avoid "
+    "dumping a 16T+ core file. Ignored on OSes that don't dump core by"
+    "default and for sanitizers that don't reserve lots of virtual memory.")
+COMMON_FLAG(bool, use_madv_dontdump, true,
+          "If set, instructs kernel to not store the (huge) shadow "
+          "in core file.")
+COMMON_FLAG(bool, symbolize_inline_frames, true,
+            "Print inlined frames in stacktraces. Defaults to true.")
+COMMON_FLAG(bool, symbolize_vs_style, false,
+            "Print file locations in Visual Studio style (e.g: "
+            " file(10,42): ...")
+COMMON_FLAG(const char *, stack_trace_format, "DEFAULT",
+            "Format string used to render stack frames. "
+            "See sanitizer_stacktrace_printer.h for the format description. "
+            "Use DEFAULT to get default format.")
+COMMON_FLAG(bool, no_huge_pages_for_shadow, true,
+            "If true, the shadow is not allowed to use huge pages. ")
+COMMON_FLAG(bool, strict_string_checks, false,
+            "If set check that string arguments are properly null-terminated")
+COMMON_FLAG(bool, intercept_strstr, true,
+            "If set, uses custom wrappers for strstr and strcasestr functions "
+            "to find more errors.")
+COMMON_FLAG(bool, intercept_strspn, true,
+            "If set, uses custom wrappers for strspn and strcspn function "
+            "to find more errors.")
+COMMON_FLAG(bool, intercept_strpbrk, true,
+            "If set, uses custom wrappers for strpbrk function "
+            "to find more errors.")
+COMMON_FLAG(bool, intercept_memcmp, true,
+            "If set, uses custom wrappers for memcmp function "
+            "to find more errors.")
+COMMON_FLAG(bool, strict_memcmp, true,
+          "If true, assume that memcmp(p1, p2, n) always reads n bytes before "
+          "comparing p1 and p2.")
+COMMON_FLAG(bool, decorate_proc_maps, false, "If set, decorate sanitizer "
+                                             "mappings in /proc/self/maps with "
+                                             "user-readable names")
+COMMON_FLAG(int, exitcode, 1, "Override the program exit status if the tool "
+                              "found an error")
+COMMON_FLAG(
+    bool, abort_on_error, SANITIZER_MAC,
+    "If set, the tool calls abort() instead of _exit() after printing the "
+    "error report.")