Why warn about #include_next in system headers?

[Neil Booth]

Zack Weinberg wrote:-

> > This is what was confusing me.  The /usr appears after the <...> in
> > the list - I expected it to be under the "...".  Looking at cppinit.c,
> > I notice that *nowhere* calls append_include_chain with "QUOTE" as the
> > include chain to put the path on (i.e. we could eliminate the QUOTE
> > enumeration constant).
> 
> You've forgotten -I-.

Ah yes.  Damn this search path stuff is confusing.

We can still get rid of QUOTE if we want.  I believe Glibc uses -I-;
I've certainly seen it used somewhere.

Neil.