[gcc r15-8396] gccrs: early: Do not emit errors for unresolved imports, store them instead

[Arthur Cohen]

https://gcc.gnu.org/g:924446743f6e21efa745ec1b051e9f37887e32f9

commit r15-8396-g924446743f6e21efa745ec1b051e9f37887e32f9
Author: Arthur Cohen <arthur.cohen@embecosm.com>
Date:   Sat Apr 6 23:23:39 2024 +0200

    gccrs: early: Do not emit errors for unresolved imports, store them instead
    
    gcc/rust/ChangeLog:
    
            * resolve/rust-early-name-resolver-2.0.cc (Early::visit_attributes):
            Store errors for later.

Diff:
---
 gcc/rust/resolve/rust-early-name-resolver-2.0.cc | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/gcc/rust/resolve/rust-early-name-resolver-2.0.cc b/gcc/rust/resolve/rust-early-name-resolver-2.0.cc
index ac8eb940c8d5..47582a6f339a 100644
--- a/gcc/rust/resolve/rust-early-name-resolver-2.0.cc
+++ b/gcc/rust/resolve/rust-early-name-resolver-2.0.cc
@@ -161,8 +161,9 @@ Early::build_import_mapping (
 	}
 
       if (!found)
-	rust_error_at (path.get_final_segment ().get_locus (), ErrorCode::E0433,
-		       "unresolved import %qs", path.as_string ().c_str ());
+	collect_error (Error (path.get_final_segment ().get_locus (),
+			      ErrorCode::E0433, "unresolved import %qs",
+			      path.as_string ().c_str ()));
     }
 }
 
@@ -303,8 +304,9 @@ Early::visit_attributes (std::vector<AST::Attribute> &attrs)
 	      if (!definition.has_value ())
 		{
 		  // FIXME: Change to proper error message
-		  rust_error_at (trait.get ().get_locus (),
-				 "could not resolve trait");
+		  collect_error (Error (trait.get ().get_locus (),
+					"could not resolve trait %qs",
+					trait.get ().as_string ().c_str ()));
 		  continue;
 		}
 
@@ -326,8 +328,9 @@ Early::visit_attributes (std::vector<AST::Attribute> &attrs)
 	  if (!definition.has_value ())
 	    {
 	      // FIXME: Change to proper error message
-	      rust_error_at (attr.get_locus (),
-			     "could not resolve attribute macro invocation");
+	      collect_error (
+		Error (attr.get_locus (),
+		       "could not resolve attribute macro invocation"));
 	      return;
 	    }
 	  auto pm_def = mappings.lookup_attribute_proc_macro_def (