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patches/glibc/linuxthreads-2.3.6/110-alpha-cfi.patch
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--
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 --- glibc-2.3.6/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h.orig	2008-06-19 15:31:45.000000000 +0300

     2 +++ glibc-2.3.6/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h	2008-06-19 15:36:10.000000000 +0300

     3 @@ -54,6 +54,7 @@

     4  	bne	a3, SYSCALL_ERROR_LABEL;			\

     5  __LABEL($pseudo_ret)						\

     6  	.subsection 2;						\

     7 +	cfi_startproc;						\

     8  __LABEL($pseudo_cancel)						\

     9  	subq	sp, 64, sp;					\

    10  	cfi_def_cfa_offset(64);					\

    11 @@ -84,12 +85,13 @@

    12  	cfi_def_cfa_offset(0);					\

    13  __LABEL($syscall_error)						\

    14  	SYSCALL_ERROR_HANDLER;					\

    15 +	cfi_endproc;						\

    16  	.previous

    17  

    18  # undef PSEUDO_END

    19  # define PSEUDO_END(sym)					\

    20 -	.subsection 2;						\

    21  	cfi_endproc;						\

    22 +	.subsection 2;						\

    23  	.size sym, .-sym

    24  

    25  # define SAVE_ARGS_0	/* Nothing.  */
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