Re: Apache::ASP v2.11 Parser optimization broke under perl 5.6.1

[Gurusamy Sarathy <gs...@ActiveState.com>]

On Wed, 11 Jul 2001 12:44:01 PDT, Joshua Chamas wrote:
>Hey perl porters & Apache::ASP list:
>
>This parser optimization, released in Apache::ASP 2.11, 
>broke Apache::ASP under perl 5.6.1 ( + 5.7.1 I'm guessing 
>from a cpan-testers FAIL report )
>
>sub Apache::ASP::ParseHelper {
>    ...
>    while($$data =~ /(.*?)\<\%(.*?)\%\>/gso) {
>
>putting back in the old code made things work again,
>so I'll have to resurrect this in 2.15:
>
>    while($$data =~ s/^(.*?)\<\%(.*?)\%\>//gso) {

I quote from perl-5.6.1.announce:

:Known Issues
:----------------------------------------------------------------------------
:
:Issues that arise with Perl releases are fixed as they become known to us.
:Individual patches to problems in Perl 5.6.1 (referenced by patch numbers
:below) are usually available here:
:
:    http://public.ActiveState.com/gsar/APC/5.6.2/diffs/
:
:Patches that affect the same files should be applied in order, using the
:GNU patch utility.  For example:
:
:    cd perl-5.6.1
:    gzip -cd 1234.gz | patch -lNp1
:
:Please be aware that, in general, these patches are NOT as thoroughly
:tested as the release itself.  Use at your own risk.
:
:The following issues have come to light since Perl 5.6.1 was released:
:
:    + A somewhat obscure case of overeager optimization in the regular
:      expression engine has been reported.  The problem may affect you
:      if you are matching unanchored patterns with the C</sg> modifiers
:      and without also using the C<\G> escape.  Patch 9675 cures this
:      problem by reverting the optimization.

So I think you may want to try:

    http://public.ActiveState.com/gsar/APC/5.6.2/diffs/9675.gz

HTH,


Sarathy
gsar@ActiveState.com

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