Re: [boost] A summary of testing with sanitizers

Subject: Re: [boost] A summary of testing with sanitizers
From: Ben Pope (benpope81_at_[hidden])
Date: 2015-05-07 11:52:41

On Thursday, May 07, 2015 11:33 PM, John Maddock wrote:
>
>> 15 SUMMARY: MemorySanitizer: use-of-uninitialized-value
>> /home/ben/development/boost/test/build/boost_root/status/../boost/multiprecision/gmp.hpp:331:10
>> in
>> boost::multiprecision::backends::detail::gmp_float_imp<50u>::~gmp_float_imp()
>>
>
> After banging my head against the wall that is memory-sanitizer for a
> while, I finally figured out that the multiprecision failures are caused
> by external libraries (gmp, mpfr etc) not being built with sanitizer
> support.  I've changed the configuration tests to trigger
> memory-sanitizer errors when this is the case, so that these will no
> longer be built in that case.  However, you will need to manually delete
> the Boost.Build configuration caches (or all of bin.v2) in order for the
> fix to take effect, as these appear not to be subject to
> dependency-checking :(

What if I build sanitised versions?  How many dependant libraries would 
need to be built?

Ben