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patches/glibc/ports-2.12.1/190-localedef-mmap.patch
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--
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 sniped from Debian

     2 http://bugs.gentoo.org/289615

     3 

     4 2009-10-27  Aurelien Jarno  <aurelien@aurel32.net>

     5 

     6 	* locale/programs/locarchive.c: use MMAP_SHARED to reserve memory

     7 	used later with MMAP_FIXED | MMAP_SHARED to cope with different

     8 	alignment restrictions.

     9 

    10 diff -durN glibc-2.12.1.orig/locale/programs/locarchive.c glibc-2.12.1/locale/programs/locarchive.c

    11 --- glibc-2.12.1.orig/locale/programs/locarchive.c	2009-04-27 16:07:47.000000000 +0200

    12 +++ glibc-2.12.1/locale/programs/locarchive.c	2009-11-13 00:50:01.000000000 +0100

    13 @@ -134,7 +134,7 @@

    14    size_t reserved = RESERVE_MMAP_SIZE;

    15    int xflags = 0;

    16    if (total < reserved

    17 -      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_PRIVATE | MAP_ANON,

    18 +      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_SHARED | MAP_ANON,

    19  		       -1, 0)) != MAP_FAILED))

    20      xflags = MAP_FIXED;

    21    else

    22 @@ -396,7 +396,7 @@

    23    size_t reserved = RESERVE_MMAP_SIZE;

    24    int xflags = 0;

    25    if (total < reserved

    26 -      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_PRIVATE | MAP_ANON,

    27 +      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_SHARED | MAP_ANON,

    28  		       -1, 0)) != MAP_FAILED))

    29      xflags = MAP_FIXED;

    30    else

    31 @@ -614,7 +614,7 @@

    32    int xflags = 0;

    33    void *p;

    34    if (st.st_size < reserved

    35 -      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_PRIVATE | MAP_ANON,

    36 +      && ((p = mmap64 (NULL, reserved, PROT_NONE, MAP_SHARED | MAP_ANON,

    37  		       -1, 0)) != MAP_FAILED))

    38      xflags = MAP_FIXED;

    39    else
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