[PATCH] D27422: Fix stack-use-after-scope in CheckExplicitlyDefaultedMemberExceptionSpec

[Vitaly Buka via Phabricator via cfe-commits]

vitalybuka created this revision.
vitalybuka added a reviewer: rsmith.
vitalybuka added subscribers: cfe-commits, aizatsky.

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


https://reviews.llvm.org/D27422

Files:
  lib/Sema/SemaDeclCXX.cpp


Index: lib/Sema/SemaDeclCXX.cpp
===================================================================
--- lib/Sema/SemaDeclCXX.cpp
+++ lib/Sema/SemaDeclCXX.cpp
@@ -6299,8 +6299,8 @@
   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));
 



Index: lib/Sema/SemaDeclCXX.cpp
===================================================================
--- lib/Sema/SemaDeclCXX.cpp
+++ lib/Sema/SemaDeclCXX.cpp
@@ -6299,8 +6299,8 @@
   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));
 

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