[PATCH] D11435: [sanitizer] Implement logging to syslog

[Evgeniy Stepanov]

eugenis created this revision.
eugenis added reviewers: samsonov, kcc.
eugenis added a subscriber: llvm-commits.
Herald added subscribers: srhines, danalbert, tberghammer.

Previously, Android target has logic of duplicating all sanitizer output to logcat.
This change extends it to all posix platforms via the use of syslog, controlled by log_to_syslog flag.
Enabled by default on Android, off everywhere else.

A bit of cmake magic is required to allow Printf() to call a libc function. I'm adding a stub implementation to support no-libc builds like dfsan and safestack.


http://reviews.llvm.org/D11435

Files:
  lib/safestack/CMakeLists.txt
  lib/sanitizer_common/CMakeLists.txt
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_common_nolibc.cc
  lib/sanitizer_common/sanitizer_flags.inc
  lib/sanitizer_common/sanitizer_linux.cc
  lib/sanitizer_common/sanitizer_posix_libcdep.cc
  lib/sanitizer_common/sanitizer_printf.cc
  lib/sanitizer_common/tests/CMakeLists.txt

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