[Bug libstdc++/124290] 23_containers/mdspan/submdspan tests time out

[tkaminsk at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124290

Tomasz Kamiński <tkaminsk at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |tkaminsk at gcc dot gnu.org

--- Comment #1 from Tomasz Kamiński <tkaminsk at gcc dot gnu.org> ---
Yes, adding `dg-timeout-factor` seem as reasonable solution, and few sibling
test in the same directory already have them.

For the splitting, the test were already split to test one layout per file, so
without large refactoring of them, I do not think further splitting is
feasible.

Would you mind posting a patch with factors that make test pass for you?