Thread overview
[Issue 19745] Incredible memory consumption for function with huge body
Mar 16, 2019
Puneet Goel
Mar 16, 2019
Puneet Goel
Mar 16, 2019
kinke@gmx.net
Mar 21, 2019
Iain Buclaw
Mar 21, 2019
Iain Buclaw
Mar 21, 2019
anonymous4
Dec 17, 2022
Iain Buclaw
March 16, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

Puneet Goel <puneet@coverify.org> changed:

           What    |Removed                     |Added
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                 CC|                            |puneet@coverify.org

--- Comment #1 from Puneet Goel <puneet@coverify.org> ---
Created attachment 1735
  --> https://issues.dlang.org/attachment.cgi?id=1735&action=edit
Code with a BIG function body

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March 16, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

--- Comment #2 from Puneet Goel <puneet@coverify.org> ---
With the static foreach, it seems it is the static foreach unrolling which takes a lot of memory.

On the other hand, if you create physical code with a large function, the compiler does not go OOM, but seems to take forever. On my i7 linux box I kill the compilation process after it failed to produce object file even after 2 hours compiler.

I have attached test.d.xz

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March 16, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

--- Comment #3 from kinke@gmx.net ---
Ah, thanks for checking - then we have 2 separate, orthogonal issues here.

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March 21, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ibuclaw@gdcproject.org

--- Comment #4 from Iain Buclaw <ibuclaw@gdcproject.org> ---
This is a duplicate of another bug I think.

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March 21, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

--- Comment #5 from Iain Buclaw <ibuclaw@gdcproject.org> ---
(In reply to Puneet Goel from comment #2)
> With the static foreach, it seems it is the static foreach unrolling which takes a lot of memory.
> 
> On the other hand, if you create physical code with a large function, the compiler does not go OOM, but seems to take forever. On my i7 linux box I kill the compilation process after it failed to produce object file even after 2 hours compiler.
> 
> I have attached test.d.xz

What you are describing I think is covered by this bug.

https://issues.dlang.org/show_bug.cgi?id=6401

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March 21, 2019
https://issues.dlang.org/show_bug.cgi?id=19745

--- Comment #6 from anonymous4 <dfj1esp02@sneakemail.com> ---
6401 is dmc backend optimizer problem, this example fails in frontend.

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December 17, 2022
https://issues.dlang.org/show_bug.cgi?id=19745

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
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           Priority|P1                          |P3

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December 13
https://issues.dlang.org/show_bug.cgi?id=19745

--- Comment #7 from dlangBugzillaToGithub <robert.schadek@posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/dmd/issues/19543

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB

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