Re: regex [was: M4 1.4.14 on AIX 7.1BETA]

[Paolo Bonzini]

On Fri, Jul 30, 2010 at 01:03, Eric Blake <address@hidden> wrote:
> On 07/29/2010 11:19 AM, Paolo Bonzini wrote:
>> On 07/29/2010 07:10 PM, Eric Blake wrote:
>>> On 07/29/2010 10:46 AM, Rainer Tammer wrote:
>>>> *If I use M4 1.4.14.6-ffa0:*
>>>>
>>>> # ../src/m4 164.regexp
>>>> ../src/m4:164.regexp:10: bad regular expression: `\<[a-z]\w+': Memory
>>>> exhausted
>>>
>>> ...and has since regressed.
>>
>> Looks like we have a suspect...
>>
>> commit 602e3e6b709592f883ebb7bf58df1f955ea4b8f2
>> Author: Jim Meyering <address@hidden>
>> Date:   Fri Mar 19 21:26:36 2010 +0100
>>
>>     regcomp.c: make non-_LIBC implementation of build_range_exp consistent
>
> Not just ranges, but simpler expressions were dumping core for Rainer,
> so I'm not sure if you've nailed the right culprit patch:
>
> echo 'regexp(,^)' | src/m4
>
> should output 0, not complain about memory failure.

Ah I missed that upthread. Problem is, there's no other patch between
February 3 and today.

http://git.savannah.gnu.org/gitweb/?p=gnulib.git&a=search&h=HEAD&st=commit&s=lib%2Freg

Paolo