https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64094
--- Comment #9 from Jonny Grant <jg at jguk dot org> --- (In reply to Jonny Grant from comment #6) > (2) > $ mkdir testdir.cpp > > $ gcc -o main testdir.cpp > cc1plus: fatal error: testdir.cpp: No such file or directory > compilation terminated. Can files be checked that they are files? a quick stat() on each of them before passing them along? eg. stat() and then S_ISDIR(statbuf.st_mode) and display strerror(EISDIR), then check if a regular file with S_ISREG(statbuf.st_mode)