Work-in-progress for lambda conversion-to-block operator. Still need to implement the retain+autorelease outside of ARC, and there's a bug that causes the generated code to crash in ARC (which I think is unrelated to my code, although I'm not completely sure).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151428 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 5 deletions

diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index a2180be53c..1f5255dae7 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -8868,11 +8868,17 @@ void Sema::DefineImplicitLambdaToBlockPointerConversion(
   }
   Block->setParams(BlockParams);
   
-  // Add capture. The capture is uses a fake (NULL) variable, since we don't
-  // actually want to have to name a capture variable. However, the 
-  // initializer copy-initializes the lambda object.
-  BlockDecl::Capture Capture(/*Variable=*/0, /*ByRef=*/false, /*Nested=*/false,
-                             /*Copy=*/Init.take());
+  // Add capture. The capture uses a fake variable, which doesn't correspond
+  // to any actual memory location. However, the initializer copy-initializes
+  // the lambda object.
+  TypeSourceInfo *CapVarTSI =
+      Context.getTrivialTypeSourceInfo(DerefThis->getType());
+  VarDecl *CapVar = VarDecl::Create(Context, Block, Conv->getLocation(),
+                                    Conv->getLocation(), 0,
+                                    DerefThis->getType(), CapVarTSI,
+                                    SC_None, SC_None);
+  BlockDecl::Capture Capture(/*Variable=*/CapVar, /*ByRef=*/false,
+                             /*Nested=*/false, /*Copy=*/Init.take());
   Block->setCaptures(Context, &Capture, &Capture + 1, 
                      /*CapturesCXXThis=*/false);