Fix perf regression in Read::read_to_end on short reads due to not checking if the cursor has initialized bytes - #158083

Fix perf regression in Read::read_to_end on short reads due to not checking if the cursor has initialized bytes#158083

rust-bors[bot] merged 3 commits into

rust-lang:mainrust-lang/rust:mainfrom

asder8215:default_read_to_end_mark_initasder8215/rust:default_read_to_end_mark_initCopy head branch name to clipboard