Mark TypeDecls used in member initializers as referenced.
Without this, -Wunused-local-typedef would incorrectly warn on the two typedefs
in this program:
void foo() {
struct A {};
struct B : public A {
typedef A INHERITED;
B() : INHERITED() {}
typedef B SELF;
B(int) : SELF() {}
};
}
llvm-svn: 221765
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index f9f9d3f..d4cb2fe 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -2914,6 +2914,7 @@
if (BaseType.isNull()) {
BaseType = Context.getTypeDeclType(TyD);
+ MarkAnyDeclReferenced(TyD->getLocation(), TyD, /*OdrUse=*/false);
if (SS.isSet())
// FIXME: preserve source range information
BaseType = Context.getElaboratedType(ETK_None, SS.getScopeRep(),
diff --git a/clang/test/SemaCXX/warn-unused-local-typedef.cpp b/clang/test/SemaCXX/warn-unused-local-typedef.cpp
index e443427..1ef0ebf 100644
--- a/clang/test/SemaCXX/warn-unused-local-typedef.cpp
+++ b/clang/test/SemaCXX/warn-unused-local-typedef.cpp
@@ -213,5 +213,17 @@
sneaky_memfun_g(sneaky_memfun());
}
+void typedefs_in_constructors() {
+ struct A {};
+ struct B : public A {
+ // Neither of these two should warn:
+ typedef A INHERITED;
+ B() : INHERITED() {}
+
+ typedef B SELF;
+ B(int) : SELF() {}
+ };
+}
+
// This should not disable any warnings:
#pragma clang diagnostic ignored "-Wunused-local-typedef"