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rust/compiler
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Matthias Krüger 576176d8b7
Rollup merge of #133211 - Strophox:miri-correct-state-update-ffi, r=RalfJung 
Extend Miri to correctly pass mutable pointers through FFI

Based off of https://github.com/rust-lang/rust/pull/129684, this PR further extends Miri to execute native calls that make use of pointers to *mutable* memory.
We adapt Miri's bookkeeping of internal state upon any FFI call that gives external code permission to mutate memory.

Native code may now possibly write and therefore initialize and change the pointer provenance of bytes it has access to: Such memory is assumed to be *initialized* afterwards and bytes are given *arbitrary (wildcard) provenance*. This enables programs that correctly use mutating FFI calls to run Miri without errors, at the cost of possibly missing Undefined Behaviour caused by incorrect usage of mutating FFI.

> <details>
>
> <summary> Simple example </summary>
>
> ```rust
> extern "C" {
>   fn init_int(ptr: *mut i32);
> }
>
> fn main() {
>   let mut x = std::mem::MaybeUninit::<i32>::uninit();
>   let x = unsafe {
>     init_int(x.as_mut_ptr());
>     x.assume_init()
>   };
>
>   println!("C initialized my memory to: {x}");
> }
> ```
> ```c
> void init_int(int *ptr) {
>   *ptr = 42;
> }
> ```
> should now show `C initialized my memory to: 42`.
>
> </details>

r? ``@RalfJung``
2024-12-06 09:27:39 +01:00
..
rustc switch jemalloc-sys back to tikv-jemalloc-sys, and update to 0.6.0 2024-12-03 08:56:33 +00:00
rustc_abi fix safe-transmute handling of enums 2024-12-01 18:28:04 +01:00
rustc_arena move strict provenance lints to new feature gate, remove old feature gates 2024-10-21 15:22:17 +01:00
rustc_ast Fix suggestion when shorthand self has erroneous type 2024-12-04 19:52:53 +00:00
rustc_ast_ir Add sugar for &pin (const|mut) types 2024-10-07 11:15:04 -07:00
rustc_ast_lowering Rollup merge of #133779 - BoxyUwU:array_const_arg_infer_hir_id, r=compiler-errors 2024-12-03 17:27:10 +01:00
rustc_ast_passes Rollup merge of #133847 - nnethercote:rm-Z-show-span, r=compiler-errors 2024-12-04 18:23:42 +01:00
rustc_ast_pretty Rollup merge of #133746 - oli-obk:push-xwyrylxmrtvq, r=jieyouxu 2024-12-02 23:08:58 +01:00
rustc_attr ensure that all publicly reachable const fn have const stability info 2024-11-10 10:16:26 +01:00
rustc_baked_icu_data Delete the cfg(not(parallel)) serial compiler 2024-11-12 13:38:58 +00:00
rustc_borrowck Rollup merge of #133798 - lcnr:nested-bodies-opaques, r=compiler-errors 2024-12-04 05:42:08 +01:00
rustc_builtin_macros make CoercePointee errors translatable 2024-12-04 20:34:48 +08:00
rustc_codegen_cranelift Rollup merge of #133545 - clubby789:symbol-intern-lit, r=jieyouxu 2024-12-03 17:27:06 +01:00
rustc_codegen_gcc Rollup merge of #130777 - azhogin:azhogin/reg-struct-return, r=workingjubilee 2024-12-06 09:27:38 +01:00
rustc_codegen_llvm Rollup merge of #127565 - esp-rs:xtensa-vaargs, r=workingjubilee 2024-12-05 05:50:50 -05:00
rustc_codegen_ssa Rollup merge of #133041 - madsmtm:print-deployment-target-env-var, r=davidtwco 2024-12-03 07:48:31 +01:00
rustc_const_eval Rollup merge of #133211 - Strophox:miri-correct-state-update-ffi, r=RalfJung 2024-12-06 09:27:39 +01:00
rustc_data_structures Assert that obligations are empty before deeply normalizing 2024-12-02 22:51:18 +00:00
rustc_driver
rustc_driver_impl Rollup merge of #133847 - nnethercote:rm-Z-show-span, r=compiler-errors 2024-12-04 18:23:42 +01:00
rustc_error_codes Rollup merge of #133726 - joshtriplett:breakpoint, r=oli-obk 2024-12-03 21:55:27 +01:00
rustc_error_messages Delete the cfg(not(parallel)) serial compiler 2024-11-12 13:38:58 +00:00
rustc_errors Eliminate magic numbers from expression precedence 2024-11-30 17:53:40 -08:00
rustc_expand Change AttrArgs::Eq into a struct variant 2024-12-02 10:28:58 +00:00
rustc_feature Auto merge of #133818 - matthiaskrgr:rollup-iav1wq7, r=matthiaskrgr 2024-12-04 00:47:09 +00:00
rustc_fluent_macro use tracked_path in rustc_fluent_macro 2024-10-19 22:32:38 +08:00
rustc_fs_util Couple of changes to make it easier to compile rustc for wasm 2024-09-26 19:51:14 +00:00
rustc_graphviz Reformat using the new identifier sorting from rustfmt 2024-09-22 19:11:29 -04:00
rustc_hir Rollup merge of #133603 - dtolnay:precedence, r=lcnr 2024-12-02 17:36:03 +01:00
rustc_hir_analysis Avoid fetching the anon const hir node that is already available 2024-12-05 09:02:16 +00:00
rustc_hir_pretty Rollup merge of #133603 - dtolnay:precedence, r=lcnr 2024-12-02 17:36:03 +01:00
rustc_hir_typeck Auto merge of #133559 - compiler-errors:structurally-resolve-adjust-for-branch, r=lcnr 2024-12-06 04:55:35 +00:00
rustc_incremental Move some code from Compiler::enter to GlobalCtxt::finish 2024-11-09 17:55:39 +00:00
rustc_index Remove HybridBitSet. 2024-11-29 17:23:34 +11:00
rustc_index_macros Auto merge of #130867 - michirakara:steps_between, r=dtolnay 2024-11-22 10:54:22 +00:00
rustc_infer Assert that obligations are empty before deeply normalizing 2024-12-02 22:51:18 +00:00
rustc_interface Rollup merge of #130777 - azhogin:azhogin/reg-struct-return, r=workingjubilee 2024-12-06 09:27:38 +01:00
rustc_lexer Revert "Reject raw lifetime followed by \' as well" 2024-12-01 05:22:16 +00:00
rustc_lint Rollup merge of #118833 - Urgau:lint_function_pointer_comparisons, r=cjgillot 2024-12-05 07:29:53 +01:00
rustc_lint_defs Rollup merge of #133535 - RalfJung:forbidden_lint_groups-future-compat, r=davidtwco 2024-12-02 23:08:53 +01:00
rustc_llvm Respect verify-llvm-ir option in the backend 2024-11-26 15:26:03 +01:00
rustc_log Reformat using the new identifier sorting from rustfmt 2024-09-22 19:11:29 -04:00
rustc_macros give a better error for tuple structs in derive(Diagnostic) 2024-10-27 21:23:28 -04:00
rustc_metadata Remove some noisy tracing 2024-12-04 09:54:20 +00:00
rustc_middle Rollup merge of #133211 - Strophox:miri-correct-state-update-ffi, r=RalfJung 2024-12-06 09:27:39 +01:00
rustc_mir_build Rollup merge of #133607 - WaffleLapkin:tail-call-checks, r=compiler-errors 2024-12-05 23:47:10 +01:00
rustc_mir_dataflow Simplify ResultsHandle. 2024-12-02 16:19:17 +11:00
rustc_mir_transform fn_sig_for_fn_abi should return a ty::FnSig, no need for a binder 2024-12-04 21:23:36 +00:00
rustc_monomorphize Share inline(never) generics across crates 2024-11-28 13:43:05 -05:00
rustc_next_trait_solver support revealing defined opaque post borrowck 2024-11-28 10:40:58 +01:00
rustc_parse Fix suggestion when shorthand self has erroneous type 2024-12-04 19:52:53 +00:00
rustc_parse_format Remove 'apostrophes' from rustc_parse_format 2024-10-14 23:22:51 +02:00
rustc_passes Auto merge of #133321 - compiler-errors:const-checker, r=wesleywiser 2024-12-03 04:39:48 +00:00
rustc_pattern_analysis no more Reveal :( 2024-11-23 13:52:54 +01:00
rustc_privacy Simplify some places that deal with generic parameter defaults 2024-11-11 21:29:18 +01:00
rustc_query_impl Rollup merge of #132410 - bjorn3:yet_another_driver_refactor_round, r=cjgillot 2024-11-27 22:23:24 +01:00
rustc_query_system Make sure to record deps from cached task in new solver on first run 2024-12-04 16:15:44 +00:00
rustc_resolve Rollup merge of #133545 - clubby789:symbol-intern-lit, r=jieyouxu 2024-12-03 17:27:06 +01:00
rustc_sanitizers use TypingEnv when no infcx is available 2024-11-18 10:38:56 +01:00
rustc_serialize Fix explicit_iter_loop in rustc_serialize 2024-10-16 15:44:16 +02:00
rustc_session Rollup merge of #130777 - azhogin:azhogin/reg-struct-return, r=workingjubilee 2024-12-06 09:27:38 +01:00
rustc_smir Rollup merge of #132410 - bjorn3:yet_another_driver_refactor_round, r=cjgillot 2024-11-27 22:23:24 +01:00
rustc_span Rollup merge of #133545 - clubby789:symbol-intern-lit, r=jieyouxu 2024-12-03 17:27:06 +01:00
rustc_symbol_mangling additional TypingEnv cleanups 2024-11-19 21:36:23 +01:00
rustc_target Rollup merge of #130777 - azhogin:azhogin/reg-struct-return, r=workingjubilee 2024-12-06 09:27:38 +01:00
rustc_trait_selection Auto merge of #133893 - fmease:rollup-11pi6fg, r=fmease 2024-12-05 07:08:49 +00:00
rustc_traits Delay a bug when encountering an impl with unconstrained generics in codegen_select 2024-11-23 05:27:45 +00:00
rustc_transmute fix safe-transmute handling of enums 2024-12-01 18:28:04 +01:00
rustc_ty_utils fn_sig_for_fn_abi should return a ty::FnSig, no need for a binder 2024-12-04 21:23:36 +00:00
rustc_type_ir Make sure to record deps from cached task in new solver on first run 2024-12-04 16:15:44 +00:00
rustc_type_ir_macros do not relate Abi and Safety 2024-10-22 23:13:04 +02:00
stable_mir Rollup merge of #132161 - celinval:smir-fix-indent, r=compiler-errors 2024-11-08 18:51:28 +11:00