[ragel] Ragel sanitise output - memory leaks
space.ship.traveller at gmail.com
Fri Jan 26 08:59:00 UTC 2018
When sanitisers are on, the exit status is non-zero because of the memory
leaks, so it's not just clean build reports, but actually failed builds.
On 14 December 2017 at 05:22, Adrian Thurston <thurston at colm.net> wrote:
> Sorry, no change. The problems are in the form of memory leaks in ragel
> mucking up your clean build reports? Maybe you could turn them off for
> ragel? Honestly it's never really been a strong concern for me since ragel
> is a one-shot kind of program. Some improvements were made when I added
> libfsm, but that was mostly in the core FSM code.
> My current concerns with ragel are to get out-of-tree support for
> alternate host languages. Will have some time for that in December.
> Removing leaks is something I would work on when 7.0 gets to stable status.
> On 2017-11-08 20:08, Samuel Williams wrote:
> Any update to this? Still causing problems for me.
> On 9 October 2017 at 10:34, Samuel Williams <space.ship.traveller at gmail.
> com> wrote:
>> Here is some log output from a build which invokes ragel to generate
>> several parsers. I've cut out (most) unimportant output.
>> The source code for the parsers: https://github.com/
>> The results from running Ragel several times with LLVM sanitisers:
>> The main issue I can see are memory leaks, but there could be other
>> Since Ragel is a one-shot "compiler", perhaps it's not important to
>> address these, except as a matter of correctness.
>> I think there are potential problem with memory leaks and they might be
>> covering up bigger issues - there might be cases where memory is being
>> accessed incorrectly but it's not causing a crash because it's not freed at
>> the right point etc.
>> I'd suggest that if there is a test suite for Ragel, it's updated to run
>> with the undefined behaviour sanitiser and address sanitiser - both provide
>> useful output IMHO.
>> Happy to provide more feedback.
>> Kind regards,
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