[PATCH] D39334: [Driver] Add Scudo as a possible -fsanitize= option

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
Herald added a subscriber: srhines.

This change adds Scudo as a possible Sanitizer option via -fsanitize=.
This allows for easier static & shared linking of the Scudo library, it allows
us to enforce PIE (otherwise the security of the allocator is moot), and check
for incompatible Sanitizers combo.

In its current form, Scudo is not compatible with any other Sanitizer, but the
plan is to make it work in conjunction with UBsan (-fsanitize=scudo,undefined),
which will require additional work outside of the scope of this change.


https://reviews.llvm.org/D39334

Files:
  include/clang/Basic/Sanitizers.def
  include/clang/Driver/SanitizerArgs.h
  lib/Driver/SanitizerArgs.cpp
  lib/Driver/ToolChains/CommonArgs.cpp
  lib/Driver/ToolChains/Linux.cpp
  lib/Lex/PPMacroExpansion.cpp
  test/Driver/fsanitize.c
  test/Driver/sanitizer-ld.c

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