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patches/glibc/2.9/150-regex-BZ697.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed May 04 00:04:23 2011 +0200 (2011-05-04)
changeset 2608 aa09a36c3d36
parent 1201 c9967a6e3b25
permissions -rw-r--r--
scripts/functions: test for decompressors before use

./configure does check for the presence of gz and bzip2, so we can
safely use them in the build scripts.

On the other hand, more recent formats (eg. XZ) are not yet widely
available, and we do not want, and can't, force the user to install
them as a pre-requisite.

So, build up a list of allowed tarball formats based on the available
decompressors. For no, this is a static list, but the upcoming XZ
support will conditionnaly add to this list.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/0053_all_glibc-2.9-regex-BZ697.patch

     2 

     3 -= BEGIN original header =-

     4 http://sourceware.org/ml/libc-alpha/2009-01/msg00006.html

     5 

     6 From 37bdc055ceeb6b1144c07448a7210d9ab3fbb2f5 Mon Sep 17 00:00:00 2001

     7 From: Ulrich Drepper <drepper@redhat.com>

     8 Date: Thu, 8 Jan 2009 00:47:05 +0000

     9 Subject: [PATCH] (prune_impossible_nodes): Handle sifted_states[0] being NULL also if

    10  there are no backreferences.

    11 

    12 -= END original header =-

    13 

    14 diff -durN glibc-2_9.orig/posix/regexec.c glibc-2_9/posix/regexec.c

    15 --- glibc-2_9.orig/posix/regexec.c	2007-10-12 19:47:13.000000000 +0200

    16 +++ glibc-2_9/posix/regexec.c	2009-02-02 22:00:43.000000000 +0100

    17 @@ -1004,6 +1004,11 @@

    18        re_node_set_free (&sctx.limits);

    19        if (BE (ret != REG_NOERROR, 0))

    20  	goto free_return;

    21 +      if (sifted_states[0] == NULL)

    22 +	{

    23 +	  ret = REG_NOMATCH;

    24 +	  goto free_return;

    25 +	}

    26      }

    27    re_free (mctx->state_log);

    28    mctx->state_log = sifted_states;
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