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patches/gcc/4.4.5/100-alpha-mieee-default.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 diff -durN gcc-4.4.5.orig/gcc/config/alpha/alpha.h gcc-4.4.5/gcc/config/alpha/alpha.h

     2 --- gcc-4.4.5.orig/gcc/config/alpha/alpha.h	2009-02-20 16:20:38.000000000 +0100

     3 +++ gcc-4.4.5/gcc/config/alpha/alpha.h	2010-10-09 22:57:31.000000000 +0200

     4 @@ -95,6 +95,8 @@

     5    while (0)

     6  #endif

     7  

     8 +#define CPP_SPEC "%{!no-ieee:-mieee}"

     9 +

    10  #define WORD_SWITCH_TAKES_ARG(STR)		\

    11   (!strcmp (STR, "rpath") || DEFAULT_WORD_SWITCH_TAKES_ARG(STR))

    12  

    13 diff -durN gcc-4.4.5.orig/gcc/config/alpha/alpha.opt gcc-4.4.5/gcc/config/alpha/alpha.opt

    14 --- gcc-4.4.5.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200

    15 +++ gcc-4.4.5/gcc/config/alpha/alpha.opt	2010-10-09 22:57:31.000000000 +0200

    16 @@ -39,7 +39,7 @@

    17  Request IEEE-conformant math library routines (OSF/1)

    18  

    19  mieee

    20 -Target Report RejectNegative Mask(IEEE)

    21 +Target Report Mask(IEEE)

    22  Emit IEEE-conformant code, without inexact exceptions

    23  

    24  mieee-with-inexact
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