tnakagome / exray Goto Github PK

I'm trying to use your library on my Ubuntu 16.04 machine.

make built the lib without errors, but when I run my test-program I get the following:

$ LD_PRELOAD=./libexray.so ./fail
./fail: symbol lookup error: ./libexray.so: undefined symbol: pthread_once

My test-program is:

#include <stdexcept>

void three()
{
                throw std::runtime_error("Failed in function three");
}

void two(int num)
{
                three();
}

void one()
{
                two(42);
}

int main(int argc, char *argv[])
{
                one();
                return 0;
}

exray::Options::outputFilters is a static variable and it is used by the ExceptionHandler to try and filter exceptions.

Now if the using application throws from another static initialization, if outputFilters wasn't yet initialized, the application will crash. (there's a 50/50 chance)

In my case it crashed. I fixed it by making outputFilters a static function instead (which just creates a static object and returns its reference). This fixes the above problem.