Hi Will, thanks for your quick answer.
This object, my_path, has not yet gone out of scope. Why would you expect its memory to have been reclaimed in the line that follows?
True. Here is the updated code: #define _CRTDBG_MAP_ALLOC #include <stdlib.h> #include <crtdbg.h> #define BOOST_FILESYSTEM_VERSION 3 #include <boost/filesystem/convenience.hpp> namespace fs = boost::filesystem; int main(int argc, char* argv[]) { { fs::path my_path( "C:/bla.dat" ); } _CrtDumpMemoryLeaks(); return 0; } -- output: 'test.exe': Loaded 'C:\gil_contributions\solutions\vc10\test\x64\Debug\test.exe', Symbols loaded. 'test.exe': Loaded 'C:\Windows\System32\ntdll.dll', Cannot find or open the PDB file 'test.exe': Loaded 'C:\Windows\System32\kernel32.dll', Cannot find or open the PDB file 'test.exe': Loaded 'C:\Windows\System32\KernelBase.dll', Cannot find or open the PDB file 'test.exe': Loaded 'C:\Windows\System32\msvcr100d.dll', Symbols loaded. 'test.exe': Loaded 'C:\Windows\System32\msvcp100d.dll', Symbols loaded. Detected memory leaks! Dumping objects -> {145} normal block at 0x00000000003F7EE0, 24 bytes long. Data: < ? > 88 09 F6 3F 01 00 00 00 01 00 00 00 00 00 00 00 {142} normal block at 0x00000000003F7D60, 16 bytes long. Data: <@ ? > 40 8B F6 3F 01 00 00 00 00 00 00 00 00 00 00 00 {141} normal block at 0x00000000003F7CE0, 16 bytes long. Data: < ? > 10 8B F6 3F 01 00 00 00 00 00 00 00 00 00 00 00 Object dump complete. The program '[3628] test.exe: Native' has exited with code 0 (0x0). It's getting late here. Maybe I don't see the forest because there are tree? ;-) Christian