[Issue 16626] [Reg 2.073] extreme CTFE memory usage with compile time regex

[via Digitalmars-d-bugs]

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

Martin Nowak <code at 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 at 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

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