ASan: disabling instrumentation of specific function

[Johan Engelen via digitalmars-d-ldc]

Hi all,
   I just implemented blacklisting of functions for the 
sanitizers' instrumentation via a blacklist file (this is what 
Clang also provides): 
https://github.com/ldc-developers/ldc/pull/2261

But I think it is nice if we also provide a way to disable 
sanitizer instrumentation by adding a UDA to a function. For PGO, 
back then, I choose to enable/disable profiling instrumentation 
through a pragma. However, adding our own pragmas is quite 
invasive and touches frontend code, whereas adding a UDA is easy 
and nicely compartmentalized.

Any ideas for a name of the UDA? And where to put it, in 
ldc.attributes?
Clang has the no_sanitize_address attribute.

Thanks,
   Johan