[PATCH] Support asan-instrumentation-with-call-threshold in GCC

[Yury Gribov]

>> * asan_negative_params_1.diff - support for negative parameters
>
> I don't like this.  Why do you need it?

That's only for compatibility with LLVM. I know that's not usually 
considered an argument in gcc-patches but things like this would surely 
make developer's life harder.

>> * asan_calls_1.diff - the proper
>
> Note, the patch conflicts with the recently posted asan patches,
> please wait until those are reviewed.

Right, thanks for heads up.

>> +static int asan_num_accesses;
>
> I don't see this variable ever changed, so don't see
> how the patch can actually work.

True, I haven't run into this because test runs with -1 threshold (and 
this does work).

Other points noted.

-Y