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-rw-r--r--clang/lib/AST/Expr.cpp13
1 files changed, 12 insertions, 1 deletions
diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index 6a1e500d330..c2bbda33433 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -585,7 +585,18 @@ std::string PredefinedExpr::ComputeName(IdentType IT, const Decl *CurrentDecl) {
POut.flush();
- if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD))
+ // Print "auto" for all deduced return types. This includes C++1y return
+ // type deduction and lambdas. For trailing return types resolve the
+ // decltype expression. Otherwise print the real type when this is
+ // not a constructor or destructor.
+ if ((isa<CXXMethodDecl>(FD) &&
+ cast<CXXMethodDecl>(FD)->getParent()->isLambda()) ||
+ (FT && FT->getResultType()->getAs<AutoType>()))
+ Proto = "auto " + Proto;
+ else if (FT && FT->getResultType()->getAs<DecltypeType>())
+ FT->getResultType()->getAs<DecltypeType>()->getUnderlyingType()
+ .getAsStringInternal(Proto, Policy);
+ else if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD))
AFT->getResultType().getAsStringInternal(Proto, Policy);
Out << Proto;
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