R:\>wcl386 foobarfoobarfoobar.cpp Open Watcom C/C++32 Compile and Link Utility Version 1.8 Portions Copyright (c) 1988-2002 Sybase, Inc. All Rights Reserved. Source code is available under the Sybase Open Watcom Public License. See www.openwatcom.org/ for details. Unable to open "foobarfoobarfoobar.cpp" やはり長いとコンパイルエラーになりますね。