This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436

llvm-svn: 181429

llvm-svn: 181428

llvm-svn: 181424

llvm-svn: 181330

llvm-svn: 181327

Move this function to sanitizer_common because LSan uses it too. Also, fix a bug
where the TLS range reported for main thread was off by the size of the thread
descriptor from libc (TSan doesn't care much, but for LSan it's critical).

llvm-svn: 181322

With this change, __internal_*stat always expect a "struct stat *" argument.
This avoids stat/stat64 caller-side confusion (sanitizer_common tests already
made this mistake), and allows the use of __internal_fstat() as a drop-in
replacement for libc's fstat().

llvm-svn: 181311

llvm-svn: 181194

Some flags that are common to ASan/MSan/TSan/LSan have been moved to
sanitizer_common.

llvm-svn: 181193

There isn't a speedup when using unbuffered I/O. It slows it down in fact.

llvm-svn: 181060

Use unbuffered I/O. This reduces the runtime by about half. Our implementation is now only about 5 times slower than gcc's.

llvm-svn: 180980

llvm-svn: 180788

llvm-svn: 180787

asan/tsan: fix printf(), on the second pass it prints garbage and crashes on random pointer dereference

llvm-svn: 180784

llvm-svn: 180782

llvm-svn: 180781

llvm-svn: 180780

llvm-svn: 180703

llvm-svn: 180602

llvm-svn: 180599

llvm-svn: 180255

llvm-svn: 180251

llvm-svn: 180184

make[3]: make[3]: /bin/sh: ../../../../../bin/clang: Text file busy

llvm-svn: 180183

tsan: disable getpwuid_r() and glob64() interceptors under tsan, because they cause interceptor recursion if user intercepts fopen()

llvm-svn: 180182

llvm-svn: 180180

llvm-svn: 180116

llvm-svn: 180113

llvm-svn: 180107

[ASan] Disable strict-init-order checker once we have more than one thread, as this mode is thread-hostile

llvm-svn: 180106

llvm-svn: 180102

llvm-svn: 180101

llvm-svn: 180098

llvm-svn: 180097

See https://code.google.com/p/address-sanitizer/issues/detail?id=131.

llvm-svn: 180093

llvm-svn: 180091

llvm-svn: 180090

llvm-svn: 180082

llvm-svn: 180012