Update CVE 2021 15551 - #123
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- Added support for new predicates: `lifetime_bypass`, `strong_bypass`, `weak_bypass`, `unresolvable_generic`, `generic_drop`, `cfg_reaches`, `bypass_on_copy`, and `set_len_to_zero`, improving the expressiveness of dataflow constraints. - Implemented evaluation functions for the new predicates in `PredicateEvaluator`, allowing for more comprehensive analysis of unsafe dataflow scenarios. - Updated the `mentions_cfg_reaches` method in `Constraints` to facilitate the handling of CFG reachability in pattern matching. - Enhanced documentation for dataflow predicates, including usage examples and clarifications on their implications in the context of panic safety and CVE handling. - Added tests to validate the new predicates and ensure correct behavior in various scenarios.
…weak safety levels - Renamed diagnostic names from `panic_safety` to `panic_safety_strong` and `panic_safety_weak` to improve clarity in error reporting. - Updated related test outputs to reflect the new diagnostic names, ensuring consistency across panic safety checks.
- Renamed diagnostic name from `unchecked_pointer_offset` to `unchecked_pointer_offset_general` to enhance clarity in error reporting. - Updated related test outputs to reflect the new diagnostic name, ensuring consistency across pointer safety checks. - Added new test files for CVE-2018-20991 and CVE-2018-20995 to validate the changes.
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- Introduced a new panic safety pattern in `panic-safety.rpl` to enhance handling of unsafe dataflow scenarios. - Updated `patterns.rs` to include the new Rudra pattern. - Modified existing test files to reflect changes in diagnostics and ensure proper validation of panic safety checks. - Adjusted `.stderr` files to align with the new diagnostic outputs for CVE tests, ensuring consistency across error reporting.
- Introduced new RPL patterns for `session-adt-def-unify`, `session-optional-fn-underscore`, `session-required-adt-missing`, `session-shared-ty-hit`, `session-shared-ty-mismatch-sig`, and `session-sig-not-arity` to enhance ADT matching capabilities. - Created corresponding Rust test files to validate the new patterns, ensuring correct diagnostics and behavior in various scenarios. - Removed obsolete `.stderr` files related to previous tests to streamline the test suite. - Updated existing tests to align with the new pattern definitions and improve overall test coverage for session management.
- Updated `match_adt_for_fn_mir` and `match_adt_structure` methods to accept generic arguments, improving the handling of ADT matches. - Introduced `collect_adt_def_bindings` to project `AdtPat` to `AdtDef`, ensuring proper binding in shared environments. - Modified related functions to accommodate the new argument structure and updated tests to validate these changes. - Enhanced `BindingSnapshot` and `MetaBindings` to include `adt_defs`, allowing for better tracking of ADT definitions across match sessions. - Improved diagnostics and error handling in session matching to address potential ambiguities in ADT bindings.
- Updated `match_adt_for_fn_mir` and `match_adt_structure` to accept `GenericArgsRef`, improving ADT matching capabilities. - Introduced `bind_adtpat_substs` to bind type variables from ADT patterns to generic arguments, enhancing type variable handling. - Modified `match_ty` to accommodate the new argument structure, ensuring accurate type matching across patterns. - Enhanced `collect_sig_candidates` to utilize the updated function context, improving candidate collection for function signatures. - Updated tests to validate the new functionality and ensure correct diagnostics in various matching scenarios.
- Removed unused `fn_candidate_cache` from `CheckFnCtxt` and `MatchCollectCtxt`, simplifying the context structure. - Introduced new methods in `MatchTyCtxt` for pinning type and constant variables, improving the management of variable states during matching. - Updated `matches` and `check` functions to utilize the new pinning logic, enhancing the accuracy of type variable matching. - Refactored `collect_fn_candidates` to streamline candidate collection and improve performance. - Enhanced diagnostics and error handling in the matching process to address potential ambiguities in type variable bindings.
- Refactored `check_constraints` and related methods in `MatchCollectCtxt` to incorporate environment bindings and enhance constraint evaluation. - Introduced `check_impl_constraints` to validate constraints for implementation methods, ensuring accurate matching across different contexts. - Updated `SessionMatching` to handle function slots more effectively, including checks for implementation method domains. - Enhanced diagnostics for unbound meta variables and improved handling of type and constant variable bindings in matching scenarios. - Added new tests to validate the updated functionality and ensure correct behavior in various matching contexts.
…ted matches - Introduced `SessionOutcome` struct to encapsulate results and truncation status in session matching. - Updated `MatchSession` and `SessionMatching` to utilize `SessionOutcome`, enhancing clarity in match results. - Added diagnostics for truncated matches, warning users when results exceed the configured maximum. - Enhanced `SessionConfig` with a method to check if the result count has reached the maximum limit. - Updated tests and documentation to reflect changes in session handling and diagnostics.
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