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-rw-r--r--clang/lib/AST/DeclCXX.cpp6
-rw-r--r--clang/test/SemaCXX/conversion-function.cpp11
2 files changed, 15 insertions, 2 deletions
diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index f19184c3a4e..e27d880ecf9 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -1050,8 +1050,10 @@ static void CollectVisibleConversions(ASTContext &Context,
HiddenTypes = &HiddenTypesBuffer;
for (UnresolvedSetIterator I = Cs.begin(), E = Cs.end(); I != E; ++I) {
- bool Hidden =
- !HiddenTypesBuffer.insert(GetConversionType(Context, I.getDecl()));
+ CanQualType ConvType(GetConversionType(Context, I.getDecl()));
+ bool Hidden = ParentHiddenTypes.count(ConvType);
+ if (!Hidden)
+ HiddenTypesBuffer.insert(ConvType);
// If this conversion is hidden and we're in a virtual base,
// remember that it's hidden along some inheritance path.
diff --git a/clang/test/SemaCXX/conversion-function.cpp b/clang/test/SemaCXX/conversion-function.cpp
index a7a178244c8..6fca0503ba7 100644
--- a/clang/test/SemaCXX/conversion-function.cpp
+++ b/clang/test/SemaCXX/conversion-function.cpp
@@ -392,3 +392,14 @@ namespace PR8800 {
A& a4 = (A&)c;
}
}
+
+namespace PR12712 {
+ struct A {};
+ struct B {
+ operator A();
+ operator A() const;
+ };
+ struct C : B {};
+
+ A f(const C c) { return c; }
+}
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