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-rw-r--r--clang/lib/Sema/SemaExprCXX.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index 8b9c0e2cc7d..e3bb944917c 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -3656,6 +3656,11 @@ static bool evaluateTypeTrait(Sema &S, TypeTrait Kind, SourceLocation KWLoc,
if (Args[0]->getType()->isIncompleteType())
return false;
+ // Make sure the first argument is not an abstract type.
+ CXXRecordDecl *RD = Args[0]->getType()->getAsCXXRecordDecl();
+ if (RD && RD->isAbstract())
+ return false;
+
SmallVector<OpaqueValueExpr, 2> OpaqueArgExprs;
SmallVector<Expr *, 2> ArgExprs;
ArgExprs.reserve(Args.size() - 1);
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