ASTImporterLookupTable::ASTImporterLookupTable(TranslationUnitDecl &TU) {
Builder B(*this);
B.TraverseDecl(&TU);
+ // The VaList declaration may be created on demand only or not traversed.
+ // To ensure it is present and found during import, add it to the table now.
+ if (auto *D =
+ dyn_cast_or_null<NamedDecl>(TU.getASTContext().getVaListTagDecl())) {
+ // On some platforms (AArch64) the VaList declaration can be inside a 'std'
+ // namespace. This is handled specially and not visible by AST traversal.
+ // ASTImporter must be able to find this namespace to import the VaList
+ // declaration (and the namespace) correctly.
+ if (auto *Ns = dyn_cast<NamespaceDecl>(D->getDeclContext()))
+ add(&TU, Ns);
+ add(D->getDeclContext(), D);
+ }
}
void ASTImporterLookupTable::add(DeclContext *DC, NamedDecl *ND) {
EXPECT_EQ(Templ1, Templ2);
}
+TEST_P(ASTImporterOptionSpecificTestBase, VaListC) {
+ Decl *FromTU = getTuDecl(R"(typedef __builtin_va_list va_list;)", Lang_C99);
+
+ auto *FromVaList = FirstDeclMatcher<TypedefDecl>().match(
+ FromTU, typedefDecl(hasName("va_list")));
+ ASSERT_TRUE(FromVaList);
+
+ auto *ToVaList = Import(FromVaList, Lang_C99);
+ ASSERT_TRUE(ToVaList);
+
+ auto *ToBuiltinVaList = FirstDeclMatcher<TypedefDecl>().match(
+ ToAST->getASTContext().getTranslationUnitDecl(),
+ typedefDecl(hasName("__builtin_va_list")));
+
+ ASSERT_TRUE(ToAST->getASTContext().hasSameType(
+ ToVaList->getUnderlyingType(), ToBuiltinVaList->getUnderlyingType()));
+}
+
+TEST_P(ASTImporterOptionSpecificTestBase, VaListCpp) {
+ Decl *FromTU = getTuDecl(R"(typedef __builtin_va_list va_list;)", Lang_CXX03);
+
+ auto *FromVaList = FirstDeclMatcher<TypedefDecl>().match(
+ FromTU, typedefDecl(hasName("va_list")));
+ ASSERT_TRUE(FromVaList);
+
+ auto *ToVaList = Import(FromVaList, Lang_CXX03);
+ ASSERT_TRUE(ToVaList);
+
+ auto *ToBuiltinVaList = FirstDeclMatcher<TypedefDecl>().match(
+ ToAST->getASTContext().getTranslationUnitDecl(),
+ typedefDecl(hasName("__builtin_va_list")));
+
+ ASSERT_TRUE(ToAST->getASTContext().hasSameType(
+ ToVaList->getUnderlyingType(), ToBuiltinVaList->getUnderlyingType()));
+}
+
INSTANTIATE_TEST_SUITE_P(ParameterizedTests, ASTImporterLookupTableTest,
DefaultTestValuesForRunOptions);