https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #1 from Martin Nowak <code@dawg.eu> ---
Seems to happen for 2 ctRegex to filter out non-alphanumerical characters.

auto nonAlnum = ctRegex!(`[^\w]`w);
enum notAlnum = ctRegex!(`[^0-9|a-z|A-Z]`, "g");

--

https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #2 from Martin Nowak <code@dawg.eu> ---
>From Dmitry https://github.com/dlang/phobos/pull/4286#issuecomment-255182046

> The new version is more demanding on memory during CTFE so yeah, most likely it now fails for some patterns. Dunno what to do here would really love to see the new engine sometime soon.

That might still take a while and in the meantime such simple ctRegex eat up
16GiB (kill my project tester https://ci.dawg.eu/ btw).
If we can't really support the NFA kickstarter in CTFE, then we should just
disable it for now.

--

https://issues.dlang.org/show_bug.cgi?id=16626

Dmitry Olshansky <dmitry.olsh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull
                 CC|                            |dmitry.olsh@gmail.com

--- Comment #3 from Dmitry Olshansky <dmitry.olsh@gmail.com> ---
https://github.com/dlang/phobos/pull/4877

--

https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #4 from Martin Nowak <code@dawg.eu> ---
Wasn't fully resolved by the PR. https://github.com/dlang/phobos/pull/4877#issuecomment-257186040

--

https://issues.dlang.org/show_bug.cgi?id=16626

Martin Nowak <code@dawg.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[Reg 2.073] recent dmd      |[Reg 2.073] extreme CTFE
                   |nightly runs out of memory  |memory usage with compile
                   |building Higgs              |time regex

--- Comment #5 from Martin Nowak <code@dawg.eu> ---
More specifically this commit https://github.com/dlang/phobos/commit/e98fa4ad5ad39487844c91357cfec4f698e88230 is responsible for the high memory usage.

Also both, regex and ctRegex, trigger the bug if initialized during CTFE.

enum notAlnum = regex(`[^0-9|a-z|A-Z]`);
enum ctNotAlnum = ctRegex!(`[^0-9|a-z|A-Z]`);

https://github.com/dlang/phobos/pull/4995

--

https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #6 from github-bugzilla@puremagic.com ---
Commits pushed to master at https://github.com/dlang/phobos

https://github.com/dlang/phobos/commit/07090ae2fdaddd1c40b8c149f32733e908094ac3 disable kickstart in ctfe to workaround Issue 16626

- consumes too much memory, introduced by
  e98fa4ad5ad39487844c91357cfec4f698e88230 (#4286)

https://github.com/dlang/phobos/commit/9cbc862544a9a4afa14bb526ec4aff7792a71e49 Merge pull request #4995 from MartinNowak/fix16626

disable kickstart in ctfe to workaround Issue 16626

--

https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #7 from github-bugzilla@puremagic.com ---
Commits pushed to stable at https://github.com/dlang/phobos

https://github.com/dlang/phobos/commit/07090ae2fdaddd1c40b8c149f32733e908094ac3 disable kickstart in ctfe to workaround Issue 16626

https://github.com/dlang/phobos/commit/9cbc862544a9a4afa14bb526ec4aff7792a71e49 Merge pull request #4995 from MartinNowak/fix16626

--

https://issues.dlang.org/show_bug.cgi?id=16626

--- Comment #8 from github-bugzilla@puremagic.com ---
Commits pushed to newCTFE at https://github.com/dlang/phobos

https://github.com/dlang/phobos/commit/07090ae2fdaddd1c40b8c149f32733e908094ac3 disable kickstart in ctfe to workaround Issue 16626

https://github.com/dlang/phobos/commit/9cbc862544a9a4afa14bb526ec4aff7792a71e49 Merge pull request #4995 from MartinNowak/fix16626

--

https://issues.dlang.org/show_bug.cgi?id=16626

Martin Nowak <code@dawg.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--