id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
13611,SEGFAULT when logging std::to_string(NAN),Filip Matzner,Andrey Semashev,"Consider the following code:
{{{
#include <climits>
#include <boost/log/trivial.hpp>

int main()
{
    BOOST_LOG_TRIVIAL(info) << std::to_string(std::numeric_limits<double>::quiet_NaN());
}
}}}

When compiled with:
{{{
g++ -std=c++17 -DBOOST_ALL_DYN_LINK -pthread -lboost_log -O3 test.cpp && ./a.out
}}}

It crashes with SEGFAULT. If I replace BOOST_LOG_TRIVIAL(info) with std::cout, it does not.

System:
{{{
[floop@pine /tmp ]$ g++ -v
...
gcc version 8.1.1 20180531 (GCC)
[floop@pine /tmp ]$ uname -a
Linux pine 4.16.13-2-ARCH #1 SMP PREEMPT Fri Jun 1 18:46:11 UTC 2018 x86_64 GNU/Linux
}}}

Note that the SEGFAULT does not happen with clang++, but only g++. It also does not happen with -O2, but only -O3. It might also be a compiler bug, you will probably know better than me. :-)",Bugs,closed,To Be Determined,log,Boost 1.67.0,Problem,invalid,,boost@…