[sanitizer] Intercept readv, preadv, writev, pwritev.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184717 91177308-0d34-0410-b5e6-96231b3b80d8
[msan] Unpoison param-tls in signal handler wrapper.

This an entry point from uninstrumented code.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184734 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Intercept inet_aton.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184735 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Fix TSan build.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184736 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Intercept sysinfo.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184739 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: update dynamic export syms file
now it includes proper functions (including interceptors)
and does not include local functions that lead to build failures


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184747 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: make the test more robust
currently it episodically fails
the hypothesis it is due to racy race detection algorithm
the sleep should make it more robust


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184752 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the sysroot restriction from building GCDAProfiling.c.

We really need the C standard library to be available to implement the
profiling runtime library reasonably, and replicating everything in the
SDKs tree really isn't addressing any problems we have. Notably, all of
the sanitizer runtimes take the same approach, and this isn't a library
which could end up in a bootstrapping problem where the system headers
aren't even available.

This will hopefully prevent subsequent changes which start using various
other bits of C standard library to make things more debuggable.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184798 91177308-0d34-0410-b5e6-96231b3b80d8
Address a few of the issues in GCDAProfiling I noted when looking
through Bill's patch:

1) Correctly test the file descriptor after the sceond attempt at
   creating the file.
2) Make the filename a global so that we can issue error messages from
   other routines.
3) Check errno in several places and print it out so that errors are
   easier to track down.

I don't really expect any of these to fix the current failures I'm
seeing, but I'm hopeful they'll at least let me debug them.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184799 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the sysroot (or isysroot) restriction from the GCDAProfile.c
runtime in the Makefile build system as well. Sorry for the temporary
fallout, it took me a while to find these bits.

Bill, I'm not at all confident of the change for Darwin and iOS, but as
discussed we're completely blocked on fixing this. Anyways, please
review and let me know if this will work for you guys. If necessary,
I can work with you to rig up an errno.h stub for Darwin, but I expect
that to be... moderately challenging.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184805 91177308-0d34-0410-b5e6-96231b3b80d8
Temporarily disable building the armv7 variants of profile_ios on
darwin.

After talking with Jim Grosbach pretty extensively, he was OK with me
punting on this to the Apple folks.

We agreed that the correct fix is either to extend the fake SDK headers
in compiler-rt to support the rest of libc needed by GCDAProfiling.c or
to teach the make build to test for the existence of a suitable SDK on
the system prior to building it. Both of these require someone with
access to the SDK which I don't have, and the latter (my preferred
solution) requires understanding the strange compiler-rt make build
system. Punting to Dan Dunbar or one of the others who support this
stuff on ios to write the appropriate fix, and we can let the build bots
proceed in the mean time.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184816 91177308-0d34-0410-b5e6-96231b3b80d8