crosstool-ng: patches/glibc/ports-2.12.1/440-alpha-cache-shape.patch@c65dc9b98841

cc/gcc: diable libsanitizer without NPTL

gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads

This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.

Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.

Disable libsanitizer, a bit like libatomic is.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org>

     1 older verisons of glibc would build dl-sysdep as shared-only and dl-support as

     2 static-only.  alpha hooks in a cache variable via dl-auxv.h.  newer versions of

     3 glibc build dl-sysdep as both shared and static which means we now have symbol

     4 duplication for static builds with dl-sysdep and dl-support.  since dl-sysdep

     5 is both shared/static, there is no point in hooking dl-support anymore, so we

     6 can punt it.

     8 diff -durN glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c

     9 --- glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c	2009-05-16 10:36:20.000000000 +0200

    10 +++ glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/dl-support.c	2009-11-13 00:50:53.000000000 +0100

    11 @@ -1,2 +1,1 @@

    12 -#include "dl-auxv.h"

    13  #include <elf/dl-support.c>

author	"Yann E. MORIN" <yann.morin.1998@free.fr>
	Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271	c65dc9b98841
permissions	-rw-r--r--