crosstool-ng: patches/glibc/2.7/140-i386-preferred-stack-boundary.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 (C) 2007 Yann E. MORIN <yann.morin.1998@anciens.enib.fr>

     2 License: LGPL v2.1

     4 Shut off a stupid warning: preffered-stack-boundary must be between 4 ad 12,

     5 and 2 is not.

     7 diff -dur glibc-2.5.orig/sysdeps/i386/Makefile glibc-2.5/sysdeps/i386/Makefile

     8 --- glibc-2.5.orig/sysdeps/i386/Makefile	2005-03-06 01:18:16.000000000 +0100

     9 +++ glibc-2.5/sysdeps/i386/Makefile	2007-05-27 17:49:37.000000000 +0200

    10 @@ -36,7 +36,7 @@

    11  ifeq ($(subdir),csu)

    12  sysdep-CFLAGS += -mpreferred-stack-boundary=4

    13  else

    14 -sysdep-CFLAGS += -mpreferred-stack-boundary=2

    15 +sysdep-CFLAGS += -mpreferred-stack-boundary=4

    16  # Likewise, any function which calls user callbacks

    17  uses-callbacks += -mpreferred-stack-boundary=4

    18  # Likewise, any stack alignment tests

author	"Yann E. MORIN" <yann.morin.1998@free.fr>
	Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271	c65dc9b98841
parent 744	4bf8448536d5
permissions	-rw-r--r--