Set alignment=1 for ELF debug sections

[am11]

Fix #103862

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[filipnavara]

LGTM if the tests pass

[agocke]

We have a smoke test on dwarfdump. Could we also add some validation for this in the same place?

[jkotas]

We have a smoke test on dwarfdump. Could we also add some validation for this in the same place?

dwarfdump does not complain about this detail. We would have to dump the dwarf file, parse the dump and verify that the alignment of debug sections is non-zero. It sounds too complicated to be worth it.

It would be better to add validation that linking with LinkerFlavor=gold produces working binary without any warnings. It would catch this and all other potential gold linker specific issues.

[am11]

I agree that a basic app validation would be nice with all four linkers. Since we don't have gold linker installed in the CI, it can be added later. Besides section headers are rarely changed.

[MichalStrehovsky]

Testing with all sorts of linkers is a known gap unfortunately and this would be covered if we start doing that.