Well, the lack of freeing is unremarkable. Running the regex is likely to malloc() and and finally free() lots of small chunks of memory. These will be reused if you run a similar regex again, but trying to then malloc() a single 1Gb string is unlikely to be able to make use of all those little blocks recently freed.

However, what *is* worrying is that memory usage goes quadratic on the number of code blocks in the pattern. I'll try to have a look at it sometime when I have the time.

Dave.

In reply to Re: Memory use/leak with large number of (?{}) patterns in regex by dave_the_m
in thread Memory use/leak with large number of (?{}) patterns in regex by vr

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