segfault with macro and function that does not exist ?

auto-reduced (treereduce-rust):

//@compile-flags: -frust-incomplete-and-experimental-compiler-do-not-use
#[collapse_debuginfo(no)]
macro_rules! outer {
    () => {
        one();
    };
}

fn main() {
    let ret = outer!();
}

original:

//@ ignore-lldb

// Test that macro attribute #[collapse_debuginfo(no)]
// overrides "collapse_macro_debuginfo=external" flag

//@ compile-flags:-g -C collapse_macro_debuginfo=external

// === GDB TESTS ===================================================================================

// gdb-command:run
// gdb-command:next
// gdb-command:frame
// gdb-check:[...]#one_callsite[...]
// gdb-command:next
// gdb-command:frame
// gdb-command:continue

fn one() {
    std::process::exit(ret);
}

#[collapse_debuginfo(no)]
macro_rules! outer {
    () => {
        one(); // #one_callsite
    };
}

fn main() {
    let ret = //@ compile-flags:-g -C collapse_macro_debuginfo=external; // #break
    outer!();
    std::process::exit(ret);
}

Version information:

5dc8c4d20d62462ebce137c6e5146235ab9e9e2e

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

Program output

/tmp/icemaker_global_tempdir.dXnmbxBLFUkA/rustc_testrunner_tmpdir_reporting.2pJCxgMbLFUD/mvce.rs:1:3: error: macro not found
    1 | #[collapse_debuginfo(no)]
      |   ^~~~~~~~~~~~~~~~~~
crab1: internal compiler error: Segmentation fault
0x2fecaf8 internal_error(char const*, ...)
	../../gcc/diagnostic-global-context.cc:517
0x196d57f crash_signal
	../../gcc/toplev.cc:321
0xdddcc0 Rust::MacroExpander::expand_decl_macro(unsigned long, Rust::AST::MacroInvocData&, Rust::AST::MacroRulesDefinition&, Rust::AST::InvocKind)
	../../gcc/rust/expand/rust-macro-expand.cc:43
0xddedf5 Rust::MacroExpander::expand_invoc(Rust::AST::MacroInvocation&, Rust::AST::InvocKind)
	../../gcc/rust/expand/rust-macro-expand.cc:309
0xe9b560 Rust::ExpandVisitor::maybe_expand_expr(std::unique_ptr<Rust::AST::Expr, std::default_delete<Rust::AST::Expr> >&)
	../../gcc/rust/expand/rust-expand-visitor.cc:339
0xea10db void Rust::ExpandVisitor::expand_macro_children<std::vector<std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> >, std::allocator<std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> > > >, std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> > >(std::vector<std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> >, std::allocator<std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> > > >&, std::function<std::unique_ptr<Rust::AST::Stmt, std::default_delete<Rust::AST::Stmt> > (Rust::AST::SingleASTNode)>)
	../../gcc/rust/expand/rust-expand-visitor.h:131
0xea10db Rust::ExpandVisitor::expand_inner_stmts(Rust::AST::BlockExpr&)
	../../gcc/rust/expand/rust-expand-visitor.cc:330
0xea2290 Rust::ExpandVisitor::visit(Rust::AST::BlockExpr&)
	../../gcc/rust/expand/rust-expand-visitor.cc:630
0xea014c void Rust::ExpandVisitor::expand_macro_children<std::vector<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> >, std::allocator<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> > > >, std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> > >(std::vector<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> >, std::allocator<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> > > >&, std::function<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> > (Rust::AST::SingleASTNode)>)
	../../gcc/rust/expand/rust-expand-visitor.h:131
0xea014c Rust::ExpandVisitor::expand_inner_items(std::vector<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> >, std::allocator<std::unique_ptr<Rust::AST::Item, std::default_delete<Rust::AST::Item> > > >&)
	../../gcc/rust/expand/rust-expand-visitor.cc:239
0xda39b3 Rust::Session::expansion(Rust::AST::Crate&, Rust::Resolver2_0::NameResolutionContext&)
	../../gcc/rust/rust-session-manager.cc:958
0xdb8ed7 Rust::Session::compile_crate(char const*)
	../../gcc/rust/rust-session-manager.cc:620
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.

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