[sanitizer] Fix NULL arg handling in setitimer/getitimer interceptors.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187789 91177308-0d34-0410-b5e6-96231b3b80d8
[libsanitizer] Drive-by fix for -Wempty-body in sanitizer_common_syscalls.inc
This makes the file consistently use { } around the if statements containing the PRE_/POST_ macros.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187797 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "[sanitizer] Intercept sched_getaffinity."

This reverts commit r187788.

The test case is unreliable (as the test may be run in a situation in
which it has no affinity with cpu0). This can be recommitted with a more
reliable test - possibly using CPU_COUNT != 0 instead (I wasn't entirely
sure that a process was guaranteed to have at least one affinity, though
it seems reasonable, or I'd have made the change myself).

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187841 91177308-0d34-0410-b5e6-96231b3b80d8
Enable pipefail for LSan tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187873 91177308-0d34-0410-b5e6-96231b3b80d8
Enable pipefail for TSan tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187875 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Intercept sched_getaffinity.

Re-applying with a more reliable test case.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187876 91177308-0d34-0410-b5e6-96231b3b80d8
Enable pipefail for ASan tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187877 91177308-0d34-0410-b5e6-96231b3b80d8
Distinguish 32-bit ASan from 64-bit ASan in lit configs

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187878 91177308-0d34-0410-b5e6-96231b3b80d8