How to identify the version of the LLVM AddressSanitizer integrated to GCC 4.9.3 and after

[Gayan Pathirage]

Hi,

I find it difficult to locate the information regarding the version of
the sanitizers (i.e. LLVM Sanitizers) integrated with GCC 4.9.3. Could
anyone suggest me a location where I can find this information.

My question is due to some of the run time flags defined in ASAN is
not recognized in GCC based binary (i.e. GCC 4.9.3). e.g.
ASAN_OPTIONS=help=1:halt_on_error=0

Also what is the GCC policy behind updating LLVM sanitizers to their
latest version?

Rgds,

Gayan