crosstool-ng: patches/glibc/ports-2.6.1/100-ARM-NPTL.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 diff -durN glibc-2.6.1.orig/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h glibc-2.6.1/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h

     2 --- glibc-2.6.1.orig/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h	2005-11-16 20:22:59.000000000 +0100

     3 +++ glibc-2.6.1/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h	2007-09-06 13:53:16.000000000 +0200

     4 @@ -126,3 +126,9 @@

     5  # define NO_CANCELLATION 1

     7  #endif

8 +

     9 +#ifndef __ASSEMBLER__

    10 +# define RTLD_SINGLE_THREAD_P \

    11 +  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \

    12 +                   header.multiple_threads) == 0, 1)

    13 +#endif

author	"Yann E. MORIN" <yann.morin.1998@free.fr>
	Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271	c65dc9b98841
parent 365	ba634892cc18
permissions	-rw-r--r--