Rollup of 5 pull requests#146282

Merged

bors merged 11 commits intorust-lang:masterfrom

tgross35:rollup-0n5tjnm

Sep 7, 2025

Commits on Aug 22, 2025

benchmarks for exponent fmt of integers
pascaldekloe
committed

Commits on Sep 5, 2025

single buffer for exponent fmt of integers
pascaldekloe
committed

Commits on Sep 6, 2025

Add socket extensions for cygwin
Berrysoft
committed
identity uses are ok, even if there are no defining uses
lcnr
committed
Update comment for werror on rust-lang/rust CI explaining why we keep MSVC definitively excluded
rperier
committed
Make `LetChainsPolicy` public for rustfmt usage
mohe2015
committed
Rollup merge of #139524 - Berrysoft:cygwin-socket-ext, r=tgross35
tgross35
authored
Rollup merge of #145940 - pascaldekloe:int-exp-tune, r=tgross35
tgross35
authored
Rollup merge of #146206 - lcnr:fix-non-defining-uses, r=BoxyUwU
tgross35
authored
Rollup merge of #146272 - rperier:rustc_llvm_werror_remove_commment_llvm22, r=tgross35
tgross35
authored
Rollup merge of #146280 - mohe2015:public-for-rustfmt-forks, r=lqd
tgross35
authored