void ClangASTImporter::ASTImporterDelegate::ImportDefinitionTo(
clang::Decl *to, clang::Decl *from) {
+ // We might have a forward declaration from a shared library that we
+ // gave external lexical storage so that Clang asks us about the full
+ // definition when it needs it. In this case the ASTImporter isn't aware
+ // that the forward decl from the shared library is the actual import
+ // target but would create a second declaration that would then be defined.
+ // We want that 'to' is actually complete after this function so let's
+ // tell the ASTImporter that 'to' was imported from 'from'.
+ MapImported(from, to);
ASTImporter::Imported(from, to);
/*
EXPECT_EQ(origin.decl, source.record_decl);
}
+TEST_F(TestClangASTImporter, CompleteFwdDeclWithOtherOrigin) {
+ // Create an AST with a full type that is defined.
+ clang_utils::SourceASTWithRecord source_with_definition;
+
+ // Create an AST with a type thst is only a forward declaration with the
+ // same name as the one in the the other source.
+ std::unique_ptr<TypeSystemClang> fwd_decl_source = clang_utils::createAST();
+ CompilerType fwd_decl_type = clang_utils::createRecord(
+ *fwd_decl_source, source_with_definition.record_decl->getName());
+
+ // Create a target and import the forward decl.
+ std::unique_ptr<TypeSystemClang> target = clang_utils::createAST();
+ ClangASTImporter importer;
+ CompilerType imported = importer.CopyType(*target, fwd_decl_type);
+ ASSERT_TRUE(imported.IsValid());
+ EXPECT_FALSE(imported.IsDefined());
+
+ // Now complete the forward decl with the definition from the other source.
+ // This should define the decl and give it the fields of the other origin.
+ clang::TagDecl *imported_tag_decl = ClangUtil::GetAsTagDecl(imported);
+ importer.CompleteTagDeclWithOrigin(imported_tag_decl,
+ source_with_definition.record_decl);
+ ASSERT_TRUE(imported.IsValid());
+ EXPECT_TRUE(imported.IsDefined());
+ EXPECT_EQ(1U, imported.GetNumFields());
+}
+
TEST_F(TestClangASTImporter, DeportDeclTagDecl) {
// Tests that the ClangASTImporter::DeportDecl completely copies TagDecls.
clang_utils::SourceASTWithRecord source;