gcc 2.95 used to do it almost right: FreeBSD4:/>cpp --version 2.95.4 FreeBSD4:/>cpp < . cpp0: Input file `' is a directory (1) FreeBSD4:/>
LinuxDebian:~>cpp --version cpp (GCC) 3.3.5 (Debian 1:3.3.5-8) Copyright (C) 2003 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. LinuxDebian:~>cpp < . cc1: stdout: No such file or directory (1) LinuxDebian:~> FreeBSD5:~>cpp --version cpp (GCC) 3.4.2 [FreeBSD] 20040728 Copyright (C) 2004 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. FreeBSD5:~>cpp < . cc1: stdout: No such file or directory # 1 "<built-in>" # 1 "<command line>" cc1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. (1) FreeBSD5:~> -- Summary: cpp segfaults on directory input Product: gcc Version: 3.4.2 Status: UNCONFIRMED Severity: minor Priority: P3 Component: preprocessor AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: marcolz at stack dot nl CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: i686-pc-freebsd5 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20281
