diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Sema/TreeTransform.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/Sema/TreeTransform.h b/lib/Sema/TreeTransform.h index f601d5c047..43d89e2875 100644 --- a/lib/Sema/TreeTransform.h +++ b/lib/Sema/TreeTransform.h @@ -6787,8 +6787,14 @@ TreeTransform<Derived>::TransformCXXNoexceptExpr(CXXNoexceptExpr *E) { template<typename Derived> ExprResult TreeTransform<Derived>::TransformPackExpansionExpr(PackExpansionExpr *E) { - llvm_unreachable("pack expansion expression in unhandled context"); - return ExprError(); + ExprResult Pattern = getDerived().TransformExpr(E->getPattern()); + if (Pattern.isInvalid()) + return ExprError(); + + if (!getDerived().AlwaysRebuild() && Pattern.get() == E->getPattern()) + return SemaRef.Owned(E); + + return getDerived().RebuildPackExpansion(Pattern.get(), E->getEllipsisLoc()); } template<typename Derived> |