[pcre-dev] [Bug 1916] Advanced data processing for an altern…

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Címzett: pcre-dev
Tárgy: [pcre-dev] [Bug 1916] Advanced data processing for an alternation with a lot of key words
https://bugs.exim.org/show_bug.cgi?id=1916

Markus Elfring <elfring@???> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86                         |x86-64


--- Comment #1 from Markus Elfring <elfring@???> ---
(In reply to comment #0)

I got the impression that the message “regular expression is too complicated”
is connected with the internal identifier “ERR86”.
I added logging statements at a few source code places after it is assigned to
variables like “errorcode”. So it seems that an error message was displayed
beccause the function “could_be_empty_branch” returned a negative value from a
call in “pcre2_compile_8”.


How are the chances to reconsider this software limitation (and a corresponding
comment there)?

http://vcs.pcre.org/pcre2/code/trunk/src/pcre2_compile.c?revision=596&view=markup
:
“…
Setting the cap at 1100 allows the test for more than 1023 capturing patterns
to work.
…”


I changed this value to “3456” for another test try. My constructed search
pattern was finally accepted then. The successful test display contained
expected data.
Is an information like “Memory allocation (code space): 102475” also worth for
further considerations here?

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