Auto trait AST validation #2749
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Generic parameters are not allowed on auto traits, the compiler should emit an error. gcc/rust/ChangeLog: * checks/errors/rust-ast-validation.cc (ASTValidation::visit): Add check for generics on auto traits. * checks/errors/rust-ast-validation.h: Add visit function prototype. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Generics are forbidden on auto traits and an error should be emitted. This commit highlight this behavior. gcc/testsuite/ChangeLog: * rust/compile/generic_auto_trait.rs: New test. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Reject auto traits containing a super trait bound during AST validation pass. gcc/rust/ChangeLog: * checks/errors/rust-ast-validation.cc (ASTValidation::visit): Reject auto traits with super traits. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Add a new regression test to highlight the error behavior with a super trait on an auto trait. gcc/testsuite/ChangeLog: * rust/compile/auto_trait_super_trait.rs: New test. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Reject rust code with associated items on auto traits. gcc/rust/ChangeLog: * checks/errors/rust-ast-validation.cc (ASTValidation::visit): Add auto trait associated item check in AST validation pass. * parse/rust-parse-impl.h: Remove old error emission done during parsing pass. gcc/testsuite/ChangeLog: * rust/compile/auto_trait_invalid.rs: Update old test with updated error message. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
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CohenArthur
approved these changes
Nov 21, 2023
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Some constructs are forbidden in rust with auto traits such as generic arguments and super traits. Rust code containing such construct should be rejected and the compiler should emit an error.