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bors 4919988fe1 Auto merge of #91241 - dtolnay:firstchunk, r=oli-obk
Eliminate an unreachable codepath from String::from_utf8_lossy

`Utf8Lossy`'s `Iterator` implementation ensures that only the **final** chunk has an empty slice for `broken`:

dd549dcab4/library/core/src/str/lossy.rs (L46-L47)

Thus the only way the **first** chunk could have an empty `broken` is if it is the **final** chunk, i.e. there is only one chunk total. And the only way that there could be one chunk total with an empty `broken` is if the whole input is valid utf8 and non-empty.

That condition has already been handled by an early return, so at the point that the first `REPLACEMENT` is being pushed, it's impossible for `first_broken` to be empty.
2021-11-27 22:53:21 +00:00
..
alloc Auto merge of #91241 - dtolnay:firstchunk, r=oli-obk 2021-11-27 22:53:21 +00:00
backtrace@b02ed04a7e Updated backtrace submodule 2021-11-02 12:31:34 +01:00
core Auto merge of #91288 - matthiaskrgr:rollup-yp5h41r, r=matthiaskrgr 2021-11-27 14:29:12 +00:00
panic_abort Use target_family = "wasm" 2021-11-10 08:35:42 -08:00
panic_unwind Review comments 2021-11-10 08:35:42 -08:00
portable-simd Add 'library/portable-simd/' from commit '1ce1c645cf' 2021-11-12 16:58:25 -08:00
proc_macro proc_macro: Add an expand_expr method to TokenStream 2021-11-12 15:41:40 -05:00
profiler_builtins rfc3052: Remove authors field from Cargo manifests 2021-07-29 14:56:05 -07:00
rtstartup Bump bootstrap compiler to 1.50 beta 2020-12-30 09:27:19 -05:00
rustc-std-workspace-alloc rfc3052: Remove authors field from Cargo manifests 2021-07-29 14:56:05 -07:00
rustc-std-workspace-core rfc3052: Remove authors field from Cargo manifests 2021-07-29 14:56:05 -07:00
rustc-std-workspace-std rfc3052: Remove authors field from Cargo manifests 2021-07-29 14:56:05 -07:00
std Auto merge of #91288 - matthiaskrgr:rollup-yp5h41r, r=matthiaskrgr 2021-11-27 14:29:12 +00:00
stdarch@cfba59fccd Update stdarch 2021-11-19 11:20:42 -08:00
test Update more rustc/libtest things for wasm64 2021-11-10 08:35:42 -08:00
unwind Repace use of static_nobundle with native_link_modifiers 2021-10-23 15:51:22 +02:00