(I think this is a good problem for Pranav to tackle if you consider this to be a bug, Chet).
The problem is that fstat(2) will return an st_size of 0 if the file is non-regular. I think that the easiest path here is to goto `error_and_exit' if `file' is not a regular file (and perhaps print a useful error message?). (gdb) r -c 'history -r <(echo foo)' Starting program: /home/dualbus/src/gnu/bash-build/bash -c 'history -r <(echo foo)' Breakpoint 1, read_history_range (filename=0x82a9e8 "/dev/fd/63", from=0, to=-1) at ../../../bash/lib/readline/histfile.c:270 270 int overflow_errno = EFBIG; (gdb) n 277 history_lines_read_from_file = 0; (gdb) n 279 buffer = last_ts = (char *)NULL; (gdb) n 280 input = history_filename (filename); (gdb) n 281 file = input ? open (input, O_RDONLY|O_BINARY, 0666) : -1; (gdb) n 283 if ((file < 0) || (fstat (file, &finfo) == -1)) (gdb) n 286 file_size = (size_t)finfo.st_size; (gdb) n 289 if (file_size != finfo.st_size || file_size + 1 < file_size) (gdb) n 295 if (file_size == 0) (gdb) n 297 free (input); (gdb) n 298 return 0; /* don't waste time if we don't have to */ This was reported by Freenode user `merijn' in #bash
