Segmentation fault in boost file system path - c++

Question

I have a member function within a verify class that generates a hash for a set of files.
The code compiles correctly though when the software reaches the hashing function it throws a seg fault. I have been looking for ages and I just can't see it. It seems to be something to do with the path vector and maybe the copy function.
Program received signal SIGSEGV, Segmentation fault.
0x000055c84fbbc058 in std::vector<boost::filesystem::path, std::allocator<boost::filesystem::path> >::push_back(boost::filesystem::path const&) ()
(gdb)
Single stepping until exit from function _ZNSt6vectorIN5boost10filesystem4pathESaIS2_EE9push_backERKS2_,
which has no line number information.
Program terminated with signal SIGSEGV, Segmentation fault.
output from gdb
code below:
#pragma once
#include <boost/filesystem.hpp>
#include <cryptopp/cryptlib.h>
#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
#include <cryptopp/md5.h>
#include "cryptopp/hex.h"
#include "cryptopp/files.h"
class Verify {
private:
typedef std::vector<boost::filesystem::path> vec;
vec v;
public:
bool verify_files();
bool generate_hash(boost::filesystem::path source);
};
function implementation
bool Verify::generate_hash(boost::filesystem::path source) {
try {
if (boost::filesystem::exists(source)) { //make sure path is valid
if (boost::filesystem::is_regular_file(source)) { //no regular files
std::cout << "Please enter base path of directory only." << std::endl;
return false;
}
else if (boost::filesystem::is_directory(source)){ //process directory here
std::cout << "Scanning " << source << std::endl;
std::copy(boost::filesystem::recursive_directory_iterator(source), boost::filesystem::recursive_directory_iterator(), std::back_inserter(this->v));
std::sort(v.begin(), v.end());
for (vec::const_iterator it (v.begin()); it != v.end(); ++it){
std::string result;
if (boost::filesystem::is_regular_file(*it)) {
Weak::MD5 hash;
FileSource((*it).string().c_str(), true, new HashFilter(hash, new HexEncoder(new StringSink(result), false)));
}
std::cout << "Hashing: " << *it << " - " << result << std::endl;
}
}
}
} catch (const boost::filesystem::filesystem_error& e){
std::cout << e.what() << std::endl;
return false;
}
return true;
}

Answer 1

Your error is on this line:
std::copy(boost::filesystem::recursive_directory_iterator(source), boost::filesystem::recursive_directory_iterator(), std::back_inserter(this->v));
You should do a manual loop here instead to investigate further (if that doesn't eliminiate the issue)