[ASan] make pthread_getschedparam test more robust

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183411 91177308-0d34-0410-b5e6-96231b3b80d8
[lsan] Implement __lsan_ignore_object().

Leak annotation similar to HeapChecker's IgnoreObject().

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183412 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Do not fall back to SlowUnwindStack() in GetStackTrace()

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183414 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: use memory access size for Go after all
helps to make range access functions correct and fast


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183418 91177308-0d34-0410-b5e6-96231b3b80d8