Add framework for resolving (pun intended) libc namespace issues, using

wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT.  Then, apply that framework to most of
the functions in stdio.h, string.h, err.h, and wchar.h.  Delete the
should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here.

tests clean on i386, amd64, sparc64, powerpc, and mips64

naming feedback from kettenis@ and millert@
ok kettenis@

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libc/string/timingsafe_bcmp.c b/src/lib/libc/string/timingsafe_bcmp.c
index 0b736154ca..0409ec3244 100644
--- a/src/lib/libc/string/timingsafe_bcmp.c
+++ b/src/lib/libc/string/timingsafe_bcmp.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: timingsafe_bcmp.c,v 1.2 2014/06/10 04:17:37 deraadt Exp $     */
+/*      $OpenBSD: timingsafe_bcmp.c,v 1.3 2015/08/31 02:53:57 guenther Exp $    */
 /*
  * Copyright (c) 2010 Damien Miller.  All rights reserved.
  *
@@ -27,3 +27,4 @@ timingsafe_bcmp(const void *b1, const void *b2, size_t n)
                 ret |= *p1++ ^ *p2++;
         return (ret != 0);
 }
+DEF_WEAK(timingsafe_bcmp);