Fix missing includes compiling with GNU 14.2.0

[wdeconinck]

Description

Compiling ifs-bundle "main" (commit 618ef84, dated 20.03.2026) on our HPC with arch "arch/ecmwf/hpc2020/gnu/14.2.0/hpcx-openmpi/2.18.1" is using multio v2.7.0.
This gave some compilation errors with missing includes for <algorithm> for use of std::find_if and std::remove_if.
I noticed these missing includes were not present in the develop either, so here goes.

FYI @towil1 , @ioanhadade . Was this not yet spotted before with any CI?

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

🌈🌦️📖🚧 Documentation 🚧📖🌦️🌈
https://sites.ecmwf.int/docs/dev-section/multio/pull-requests/PR-253

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.34%. Comparing base (0e50458) to head (36d90e1).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #253      +/-   ##
===========================================
- Coverage    56.34%   56.34%   -0.01%     
===========================================
  Files          321      321              
  Lines        21145    21146       +1     
  Branches      1680     1678       -2     
===========================================
  Hits         11915    11915              
- Misses        9230     9231       +1     

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[ioanhadade]

I have only really worked with gnu 15.2.0 so cant really say, cant remember if I have ever seen that error although looks very familiar

[dsarmany]

Hey -- Thank you for reporting this @wdeconinck . This was fixed for 2.8.0. It just may not be obvious because the include was introduced slightly deeper in the datamod stack: 9c7bdd0 .

[wdeconinck]

Okay fair enough. That wasn't obvious to me and I couldn't just use update multio without updating other packages.
N.B. in my opinion you should add the includes where they are used, so that when it gets removed in the deeper files it doesn't break again. Please close this if you want.

[ioanhadade]

im hitting this in 50r3 with gnu 15.2.0, is it safe to version bump to 2.8.0?

[dsarmany]

im hitting this in 50r3 with gnu 15.2.0, is it safe to version bump to 2.8.0?

I would think so but you may have to update some other packages as well (eckit etc.) I will put this change into the hotfix 2.7.4 version just in case. Balthi had a PR for that already, which I can re-purpose: #241 .

I will close this as a duplicate and merge that one instead.