NR2: ICE in finalize_rebind_import, at rust/resolve/... | Rust-GCC/gccrs

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auto-reduced (treereduce-rust):

//@compile-flags: -frust-incomplete-and-experimental-compiler-do-not-use -frust-name-resolution-2.0
mod exported {

    #[macro_export]
    macro_rules! legacy_macro {
        () => {};
    }

    pub use legacy_macro as _; // OK
}

original:

#![crate_name = "foo"]

mod exported {
    // Exported legacy macros are treated as `pub`.
    #[macro_export]
    macro_rules! legacy_macro { () => () }

    pub use legacy_macro as _; // OK
}
pub use self::private::Enum::*;

// @!has-dir foo/private
// @!has foo/index.html '//a/@href' 'private/index.html'

Version information:

765121736dfe3f5b319bbe9837880deda326394e

Command:
/home/matthias/vcs/github/gccrs/gccrs-build/gcc/crab1 -frust-incomplete-and-experimental-compiler-do-not-use -frust-name-resolution-2.0

Program output

crab1: internal compiler error: in finalize_rebind_import, at rust/resolve/rust-early-name-resolver-2.0.cc:434
0x86780f Rust::Resolver2_0::Early::finalize_rebind_import(Rust::Resolver2_0::Early::ImportPair const&)
	../../gcc/rust/resolve/rust-early-name-resolver-2.0.cc:434
0xe24c10 Rust::Resolver2_0::Early::visit(Rust::AST::UseDeclaration&)
	../../gcc/rust/resolve/rust-early-name-resolver-2.0.cc:464
0xc1e0ff void Rust::AST::DefaultASTVisitor::visit<Rust::AST::Item>(std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> >&)
	../../gcc/rust/ast/rust-ast-visitor.h:406
0xc1e0ff Rust::AST::DefaultASTVisitor::visit(Rust::AST::Module&)
	../../gcc/rust/ast/rust-ast-visitor.cc:785
0xe0d5d3 std::function<void ()>::operator()() const
	/usr/include/c++/14.2.1/bits/std_function.h:591
0xe0d5d3 Rust::Resolver2_0::NameResolutionContext::scoped(Rust::Resolver2_0::Rib::Kind, unsigned int, std::function<void ()>, tl::optional<Rust::Identifier>)
	../../gcc/rust/resolve/rust-name-resolution-context.cc:122
0xe11bb0 Rust::Resolver2_0::DefaultResolver::visit(Rust::AST::Module&)
	../../gcc/rust/resolve/rust-default-resolver.cc:43
0xe20e73 Rust::Resolver2_0::Early::visit(Rust::AST::Module&)
	../../gcc/rust/resolve/rust-early-name-resolver-2.0.cc:240
0xe211cf Rust::Resolver2_0::Early::go(Rust::AST::Crate&)
	../../gcc/rust/resolve/rust-early-name-resolver-2.0.cc:66
0xc45907 Rust::Session::expansion(Rust::AST::Crate&, Rust::Resolver2_0::NameResolutionContext&)
	../../gcc/rust/rust-session-manager.cc:949
0xc5bcd1 Rust::Session::compile_crate(char const*)
	../../gcc/rust/rust-session-manager.cc:619
Please submit a full bug report, with preprocessed source (by using -freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Reproduce the ICE with the reduced Rust source and the command provided. Inspect rust/resolve/rust-early-name-resolver-2.0.cc around finalize_rebind_import at line 434, along with the UseDeclaration visitor; done means this input no longer reports an internal compiler error and handles the pub use correctly.

Written by the indexing model from the issue text.

NR2: ICE in finalize_rebind_import, at rust/resolve/rust-early-name-resolver-2.0.cc:434

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