diff options
Diffstat (limited to 'gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc')
| -rw-r--r-- | gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc index 3052869..572d595 100644 --- a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc +++ b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc @@ -163,7 +163,16 @@ void TopLevel::visit (AST::ExternCrate &crate) { auto &mappings = Analysis::Mappings::get (); - CrateNum num = *mappings.lookup_crate_name (crate.get_referenced_crate ()); + auto num_opt = mappings.lookup_crate_name (crate.get_referenced_crate ()); + + if (!num_opt) + { + rust_error_at (crate.get_locus (), "unknown crate %qs", + crate.get_referenced_crate ().c_str ()); + return; + } + + CrateNum num = *num_opt; auto attribute_macros = mappings.lookup_attribute_proc_macros (num); |