Evgeniy Stepanov d04b861e69 [asan] Remove -fsanitize-address-zero-base-shadow command line
flag from clang, and disable zero-base shadow support on all platforms
where it is not the default behavior.

- It is completely unused, as far as we know.
- It is ABI-incompatible with non-zero-base shadow, which means all
objects in a process must be built with the same setting. Failing to
do so results in a segmentation fault at runtime.
- It introduces a backward dependency of compiler-rt on user code,
which is uncommon and complicates testing.

This is the Clang part of a larger change.

llvm-svn: 199372
2014-01-16 10:19:31 +00:00
..
2013-10-07 20:56:34 +00:00
2013-06-22 16:44:45 +00:00
2013-05-03 23:20:27 +00:00