Am Donnerstag, 18. Mai 2006 10:15 schrieb Eric Fisher:
> hi,
> There is a question about file operation functions used in gcc source
> code. I can't figure out why sometimes we use open function such as
> load_specs in gcc.c,
> static char *
> load_specs (const char *filename)
> {
> int desc;
> ...
> /* Open and stat the file. */
> desc = open (filename, O_RDONLY, 0);
> ...
> }
> why not fopen?
>
> Thanks
Sometimes it is easier to use open above fopen, when you need binary
transfers, though I doubt the correctness of this statement for the specs
file. But this might be a quite historic piece of code where we couldn't be
sure about the libc implementation that provides fopen.
Note that open should be available as a system call where fopen isn't
available, which is a library call (embedded systems ?!)
