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-rw-r--r--clang/lib/CodeGen/CGClass.cpp4
-rw-r--r--clang/lib/Sema/SemaDeclCXX.cpp5
2 files changed, 7 insertions, 2 deletions
diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
index 71cb13e9df3..615a4daa869 100644
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -980,6 +980,10 @@ void CodeGenFunction::EnterDtorCleanups(const CXXDestructorDecl *DD,
const CXXRecordDecl *ClassDecl = DD->getParent();
+ // Unions have no bases and do not call field destructors.
+ if (ClassDecl->isUnion())
+ return;
+
// The complete-destructor phase just destructs all the virtual bases.
if (DtorType == Dtor_Complete) {
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index b408f7f0882..e75b79c6095 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -2767,8 +2767,9 @@ void Sema::ActOnMemInitializers(Decl *ConstructorDecl,
void
Sema::MarkBaseAndMemberDestructorsReferenced(SourceLocation Location,
CXXRecordDecl *ClassDecl) {
- // Ignore dependent contexts.
- if (ClassDecl->isDependentContext())
+ // Ignore dependent contexts. Also ignore unions, since their members never
+ // have destructors implicitly called.
+ if (ClassDecl->isDependentContext() || ClassDecl->isUnion())
return;
// FIXME: all the access-control diagnostics are positioned on the
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