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Amanieu d'Antras 4bc6d75592 Revert #148937 (Remove initialized-bytes tracking from BorrowedBuf and BorrowedCursor) 
This caused several performance regressions because of existing code
which uses `Read::read` and therefore requires full buffer
initialization. This is particularly a problem when the same buffer is
re-used for multiple read calls since this means it needs to be fully
re-initialized each time.

There is still some benefit to landing the API changes, but we will have
to add private APIs so that the existing infrastructure can
track and avoid redundant initialization.

(cherry picked from commit 4b07875505)
2025-12-20 13:58:49 -08:00
..
alloc replace version placeholder 2025-12-08 10:08:32 +00:00
alloctests Auto merge of #149125 - zachs18:btreemap-eq-perf, r=workingjubilee 2025-12-02 17:04:58 +00:00
backtrace@b65ab935fb Update the backtrace submodule 2025-06-16 07:00:13 +00:00
compiler-builtins Merge ref '47cd7120d9' from rust-lang/rust 2025-12-02 11:01:27 +00:00
core Revert #148937 (Remove initialized-bytes tracking from BorrowedBuf and BorrowedCursor) 2025-12-20 13:58:49 -08:00
coretests Revert #148937 (Remove initialized-bytes tracking from BorrowedBuf and BorrowedCursor) 2025-12-20 13:58:49 -08:00
panic_abort Use core via rustc-std-workspace-core in library/panic* 2025-07-31 22:47:24 +00:00
panic_unwind Fix new function_casts_as_integer lint errors in core, std, panic_unwind and compiler crates 2025-11-10 16:38:28 +01:00
portable-simd Remove more #[must_use] from portable-simd 2025-11-11 13:27:04 -08:00
proc_macro Rollup merge of #148048 - thaliaarchi:stabilize-maybeuninit-write-slice, r=Mark-Simulacrum 2025-11-27 12:36:48 +11:00
profiler_builtins Fix profiler_builtins build script to handle full path to profiler lib 2025-04-11 16:57:38 +02:00
rtstartup Update cfg(bootstrap) 2025-07-01 10:55:49 -07:00
rustc-std-workspace-alloc Disable unit tests for stdlib packages that don't contain any 2025-07-24 09:15:28 +00:00
rustc-std-workspace-core Use core via rustc-std-workspace-core in library/panic* 2025-07-31 22:47:24 +00:00
rustc-std-workspace-std Disable unit tests for stdlib packages that don't contain any 2025-07-24 09:15:28 +00:00
std Revert #148937 (Remove initialized-bytes tracking from BorrowedBuf and BorrowedCursor) 2025-12-20 13:58:49 -08:00
std_detect replace version placeholder 2025-12-08 10:08:32 +00:00
stdarch Merge pull request #1961 from folkertdev/pmadd-correct-signedness 2025-11-17 15:52:10 +00:00
sysroot add autodiff examples 2025-11-16 23:35:37 -05:00
test Rollup merge of #142807 - sourcefrog:failfast, r=dtolnay 2025-09-17 14:56:41 +10:00
unwind Move wasm throw intrinsic back to unwind 2025-10-30 15:13:32 +03:00
windows_targets Rollup merge of #144399 - bjorn3:stdlib_tests_separate_packages, r=Mark-Simulacrum 2025-07-28 08:36:53 +02:00
Cargo.lock Motor OS: make decode_error_kind more comprehensive 2025-11-24 21:17:20 -08:00
Cargo.toml Remove the std workspace patch for compiler-builtins 2025-08-19 18:56:35 +00:00