Rollup of 6 pull requests#146388

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GuillaumeGomez wants to merge 20 commits intorust-lang:masterfrom

GuillaumeGomez:rollup-h8iruhv

Commits on Sep 7, 2025

Minor symbol comment fixes.
nnethercote
committed

Commits on Sep 9, 2025

Improve docs of certain built-in macro expanders
fmease
committed
Update `browser-ui-test` version to `0.22.2`
GuillaumeGomez
committed
Fix compare_against_sw_vers test when a version part is 0
madsmtm
committed
Strip frontmatter in fewer places
fmease
committed
c-variadic: reject non-unsafe functions
folkertdev
committed
c-variadic: reject functions with unsupported extern ABI
folkertdev
committed
Rollup merge of #146311 - nnethercote:symbol-comments, r=petrochenkov
GuillaumeGomez
authored
Rollup merge of #146340 - fmease:frontmatter-containment, r=fee1-dead,Urgau
GuillaumeGomez
authored
Rollup merge of #146342 - folkertdev:c-variadic-errors-take-3, r=workingjubilee
GuillaumeGomez
authored
Rollup merge of #146347 - folkertdev:duplicate-symbol-panic, r=fee1-dead
GuillaumeGomez
authored
Rollup merge of #146374 - GuillaumeGomez:update-browser-ui-test, r=GuillaumeGomez
GuillaumeGomez
authored
Rollup merge of #146379 - madsmtm:fix-platform_version-test, r=tgross35
GuillaumeGomez
authored