Commits on Sep 27, 2024

1. rust: Add support for Clone and Copy derive on generic types …

   When we generate derivations for Copy and Clone we need to make sure
   the associated impl block sets up the generic parameters and arguments
   correctly. This patch introduces the framework to copy chunks of the AST
   because we need to make sure these new AST nodes have their own associated
   id, calling clone on the nodes will just confuse name-resolution and
   subsequent mappings.
   
   Fixes #3139
   
   gcc/rust/ChangeLog:
   
   	* Make-lang.in: new objects
   	* ast/rust-ast-builder.cc (Builder::generic_type_path_segment): new helper
   	(Builder::single_generic_type_path): likewise
   	(Builder::new_type): likewise
   	(Builder::new_lifetime_param): likewise
   	(Builder::new_type_param): likewise
   	(Builder::new_lifetime): likewise
   	(Builder::new_generic_args): likewise
   	* ast/rust-ast-builder.h: new helper decls
   	* ast/rust-ast.h: new const getters
   	* ast/rust-path.h: likewise
   	* ast/rust-type.h: likewise
   	* expand/rust-derive-clone.cc (DeriveClone::clone_impl): take the types generics
   	(DeriveClone::visit_tuple): likewise
   	(DeriveClone::visit_struct): likewise
   	(DeriveClone::visit_union): likewise
   	* expand/rust-derive-clone.h: update header
   	* expand/rust-derive-copy.cc (DeriveCopy::copy_impl): similarly take type generics
   	(DeriveCopy::visit_struct): likewise
   	(DeriveCopy::visit_tuple): likewise
   	(DeriveCopy::visit_enum): likewise
   	(DeriveCopy::visit_union): likewise
   	* expand/rust-derive-copy.h: likewse
   	* ast/rust-ast-builder-type.cc: New file.
   	* ast/rust-ast-builder-type.h: New file.
   
   gcc/testsuite/ChangeLog:
   
   	* rust/compile/issue-3139-1.rs: New test.
   	* rust/compile/issue-3139-2.rs: New test.
   	* rust/compile/issue-3139-3.rs: New test.
   	* rust/compile/nr2/exclude: these all break nr2

   

   philberty committed Sep 27, 2024
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