95dc11475d
Bootstrap fails on aarch64-linux and some other arches with: .../gcc/rust/parse/rust-parse-impl.h: In member function ‘Rust::AST::ClosureParam Rust::Parser<ManagedTokenSource>::parse_closure_param() [with ManagedTokenSource = Rust::Lexer]’: .../gcc/rust/parse/rust-parse-impl.h:8916:49: error: ‘this’ pointer is null [-Werror=nonnull] The problem is that while say on x86_64-linux the side-effects in the arguments are evaluated from last argument to first, on aarch64-linux it is the other way around, from first to last. The C++ I believe even in C++17 makes the evaluation of those side-effects unordered (indeterminately sequenced with no interleaving), so that is fine. But, when the call in return statement is evaluated from first to last, std::move (pattern) happens before pattern->get_locus () and the former will make pattern (std::unique_ptr) a wrapper object around nullptr, so dereferencing it later to call get_locus () on it is invalid. 2022-12-14 Jakub Jelinek <jakub@redhat.com> PR rust/106072 * parse/rust-parse-impl.h (parse_closure_param): Store pattern->get_locus () in a temporary before std::move (pattern) is invoked. |
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