Fix template instantiation for __builtin_offfsetof expressions that refer to members of anonymous structs/unions
llvm-svn: 102551
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 17f6553..4e32897 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -4219,6 +4219,9 @@
case Node::Identifier:
Comp.isBrackets = false;
Comp.U.IdentInfo = ON.getFieldName();
+ if (!Comp.U.IdentInfo)
+ continue;
+
break;
}
diff --git a/clang/test/SemaTemplate/instantiate-expr-5.cpp b/clang/test/SemaTemplate/instantiate-expr-5.cpp
index 916c4f9..6cdedda 100644
--- a/clang/test/SemaTemplate/instantiate-expr-5.cpp
+++ b/clang/test/SemaTemplate/instantiate-expr-5.cpp
@@ -19,4 +19,20 @@
struct B { ArrayOfHasM a; };
A<B> x;
A<HasM> x2; // expected-note{{in instantiation of}}
+
+ template<typename T>
+ struct AnonymousUnion {
+ union {
+ int i;
+ float f;
+ };
+ };
+
+ template<typename T>
+ void test_anon_union() {
+ int array1[__builtin_offsetof(AnonymousUnion<T>, f) == 0? 1 : -1];
+ int array2[__builtin_offsetof(AnonymousUnion<int>, f) == 0? 1 : -1];
+ }
+
+ template void test_anon_union<int>();
}