funny pathname lookups from the compiler

Interested parties can collect this on their own:

dtrace -n 'vfs:namei:lookup:entry /execname == "ld.lld" || execname ==
"cc"/ { _at_[stringof(arg1)] = count(); }'

and cc hello.c or similar elsewhere.

Full list is here:
http://dpaste.com/2YM1R41

Highlights of fishy entries for me:
  /proc/self/fd                                                     1
  /etc/SuSE-release                                                 3
  /etc/alpine-release                                               3
  /etc/arch-release                                                 3
  /etc/debian_version                                               3
  /etc/exherbo-release                                              3
  /etc/gentoo-release                                               3
  /etc/lsb-release                                                  3
  /etc/malloc.conf                                                  3
  /etc/redhat-release                                               3

I don't know this code but I strongly suspect most of this can be easily
ifdef-ed out. The first one perhaps can be disabled with a switch to
configure.

None of this is a significant problem of course, but it does look like a
waste.

-- 
Mateusz Guzik <mjguzik gmail.com>