Hi, iterating over a directory on AIX results in an endless loop because of funny return codes from readdir_r(): http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.i... Specifically, readdir_r() sets errno to EBADF upon end-of-directory. Currently, dir_itr_increment() detects an error condition and returns, but without ever calling dir_itr_close(), and the DIR handle never gets closed. Workaround: --- ../boost/libs/filesystem/src/operations.cpp.orig +++ ../boost/libs/filesystem/src/operations.cpp @@ -1250,10 +1250,9 @@ BOOST_ASSERT( buffer != 0 ); dirent * entry( static_cast<dirent *>(buffer) ); dirent * result; - int return_code; - if ( (return_code = readdir_r_simulator( static_cast<DIR*>(handle), - entry, &result )) != 0 ) return error_code( errno, errno_ecat ); + int return_code( readdir_r_simulator( static_cast<DIR*>(handle), entry, &result ) ); if ( result == 0 ) return dir_itr_close( handle, buffer ); + if ( return_code != 0 ) return error_code( errno, errno_ecat ); target = entry->d_name; # ifdef BOOST_FILESYSTEM_STATUS_CACHE if ( entry->d_type == DT_UNKNOWN ) // filesystem does not supply d_type value Kind regards, -- Michael #exclude <windows.h>