Separate CountIsStar from CountIsParam in rustc_parse_format. #101000
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Rollup of 8 pull requests Successful merges: - rust-lang#98304 (Add MaybeUninit memset test) - rust-lang#98801 (Add a `File::create_new` constructor) - rust-lang#99821 (Remove separate indexing of early-bound regions) - rust-lang#100239 (remove an ineffective check in const_prop) - rust-lang#100337 (Stabilize `std::io::read_to_string`) - rust-lang#100819 (Make use of `[wrapping_]byte_{add,sub}`) - rust-lang#100934 (Remove a panicking branch from `fmt::builders::PadAdapter`) - rust-lang#101000 (Separate CountIsStar from CountIsParam in rustc_parse_format.) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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rustc_parse_format's parser would result in the exact same output for{:.*}and{:.0$}, making it hard for diagnostics to handle these cases properly.This splits those cases by adding a new
CountIsStarenum variant.This fixes #100995
Prerequisite for #100996