Possible memory leak in filesystem::copy()

[anonymous]

I executed my program in valgrind to try to find out some memory leaks and I discovered one in boost::filesystem::copy().

My code is something like this:

namespace fs = boost::filesystem;
std::string from("file1"), to("file2"); // where from and to are regular files
try {
  fs::copy(from,to); // leak here 
} catch(fs::filesystem_error) {
  // treat exception
}

The backtrace I could get with valgrind is:

==4966== 32,768 bytes in 1 blocks are definitely lost in loss record 1,463 of 1,516 
==4966==    at 0x4C2BBF7: operator new[](unsigned long) (vg_replace_malloc.c:363)
==4966==    by 0x10A09C1: boost::filesystem::detail::copy(boost::filesystem::path const&, boost::filesystem::path const&, boost::system::error_code*) (in /old
==4966==    by 0x109A501: boost::filesystem::copy(boost::filesystem::path const&, boost::filesystem::path const&) (operations.hpp:367)
==4966==    by 0x109A26B: System::copyFile(std::string const&, std::string const&) (system.cpp:78)

Where System::copyFile(string,string) is a class from my system, which basically calls the above code.

I'm using Ubuntu 12.04 amd64 with boost 1.52 compiled by myself. I'm also using jemalloc as memory allocator.

[anonymous]

Is there any update on this issue? I observe that every time I call filesystem::copy, my app has a jump in memory consumption. Thanks.

[Andrey Semashev]

I cannot reproduce the leak with the current develop (effectively, Boost 1.69) and gcc 8.2. Valgrind shows no leaks.