crosstool-ng: patches/glibc/2.9/570-debug-readlink_chk-readklinkat

cc/gcc: add the backend/frontend infra for final gcc

Currently, we issue the bare-metal compiler from the pass_1 & pass_2
core compilers, because the final gcc breaks while doing so.

This implies we have to build some libces during the start_files step,
instead of the standard libc step. This is the case for newlib.

By adding a backend/frontend infra to the final gcc, we can abstract
what backend to call: the standard backend for non-bare-metal gcc,
and the core backend for bare-metal.

This patch is just an no-op, it just adds the final backend and
frontend without changing the way bare-metal is built, to come in a
subsequent patch.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 diff -dur glibc-cvs-2.9.orig/debug/readlink_chk.c glibc-cvs-2.9/debug/readlink_chk.c

     2 --- glibc-cvs-2.9.orig/debug/readlink_chk.c	2005-03-01 01:41:15.000000000 +0100

     3 +++ glibc-cvs-2.9/debug/readlink_chk.c	2009-06-01 10:59:37.000000000 +0200

     4 @@ -25,7 +25,7 @@

     7  ssize_t

     8 -__readlink_chk (const char *path, void *buf, size_t len, size_t buflen)

     9 +__readlink_chk (const char *path, char *buf, size_t len, size_t buflen)

    10  {

    11    if (len > buflen)

    12      __chk_fail ();

    13 diff -dur glibc-cvs-2.9.orig/debug/readlinkat_chk.c glibc-cvs-2.9/debug/readlinkat_chk.c

    14 --- glibc-cvs-2.9.orig/debug/readlinkat_chk.c	2006-04-24 18:56:12.000000000 +0200

    15 +++ glibc-cvs-2.9/debug/readlinkat_chk.c	2009-06-01 11:07:26.000000000 +0200

    16 @@ -21,7 +21,7 @@

    19  ssize_t

    20 -__readlinkat_chk (int fd, const char *path, void *buf, size_t len,

    21 +__readlinkat_chk (int fd, const char *path, char *buf, size_t len,

    22  		  size_t buflen)

    23  {

    24    if (len > buflen)

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Jul 17 22:46:47 2011 +0200 (2011-07-17)
changeset 2892	aa934ec4b4ee
permissions	-rw-r--r--