[sanitizer] revert r200197: the buggy kernel (https://bugzilla.kernel.org/show_bug.cgi?id=67651) is almost unusable with asan even with this workaround (too slow), so this workaround makes no sense. The asan/msan bootstrap bot was changed to use a non-buggy kernel

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200217 91177308-0d34-0410-b5e6-96231b3b80d8
Rename fabs to local_fabs to not conflict with the builtin.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200245 91177308-0d34-0410-b5e6-96231b3b80d8
[msan] Replace assert() with GTest ASSERT_* in msan_test.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200293 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Move the signal handling-related flags to sanitizer_common.
This change is a part of refactoring intended to have common signal handling behavior in all tools.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200295 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: relax checking of errno spoiling in signal handlers
allow SIGABRT to spoil errno, because some real programs
reset SIGABRT handler in the handler, re-raise SIGABRT and return from the handler



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200304 91177308-0d34-0410-b5e6-96231b3b80d8