Fix stack-use-after-scope in CheckExplicitlyDefaultedMemberExceptionSpec

Summary:
Similar to r288685.
getExceptionSpec returned structure with pointers to temporarily object created
by computeImplicitExceptionSpec.

Reviewers: rsmith

Subscribers: aizatsky, cfe-commits

Differential Revision: https://reviews.llvm.org/D27422

llvm-svn: 288689

diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index f5a2c0d..6ccb3c5 100644 (file)
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -6299,8 +6299,8 @@ void Sema::CheckExplicitlyDefaultedMemberExceptionSpec(
   CallingConv CC = Context.getDefaultCallingConvention(/*IsVariadic=*/false,
                                                        /*IsCXXMethod=*/true);
   FunctionProtoType::ExtProtoInfo EPI(CC);
-  EPI.ExceptionSpec = computeImplicitExceptionSpec(*this, MD->getLocation(), MD)
-                          .getExceptionSpec();
+  auto IES = computeImplicitExceptionSpec(*this, MD->getLocation(), MD);
+  EPI.ExceptionSpec = IES.getExceptionSpec();
   const FunctionProtoType *ImplicitType = cast<FunctionProtoType>(
     Context.getFunctionType(Context.VoidTy, None, EPI));