From e918faadd21179213a6a716e6340494cfeb1315b Mon Sep 17 00:00:00 2001
From: Aaron Ballman <aaron@aaronballman.com>
Date: Tue, 28 Apr 2015 17:34:38 +0000
Subject: [PATCH] Silencing a -Wuninitialized warning in a different way. This
 replaces r235981, but is still NFC.

llvm-svn: 236002
---
 clang/lib/Sema/SemaLambda.cpp | 41 +++++++++++++++++++----------------------
 1 file changed, 19 insertions(+), 22 deletions(-)

diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
index e9c76b6..fa67ded 100644
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/clang/lib/Sema/SemaLambda.cpp
@@ -1477,13 +1477,30 @@ ExprResult Sema::ActOnLambdaExpr(SourceLocation StartLoc, Stmt *Body,
   return BuildLambdaExpr(StartLoc, Body->getLocEnd(), &LSI);
 }
 
+static LambdaCaptureDefault
+mapImplicitCaptureStyle(CapturingScopeInfo::ImplicitCaptureStyle ICS) {
+  switch (ICS) {
+  case CapturingScopeInfo::ImpCap_None:
+    return LCD_None;
+  case CapturingScopeInfo::ImpCap_LambdaByval:
+    return LCD_ByCopy;
+  case CapturingScopeInfo::ImpCap_CapturedRegion:
+  case CapturingScopeInfo::ImpCap_LambdaByref:
+    return LCD_ByRef;
+  case CapturingScopeInfo::ImpCap_Block:
+    llvm_unreachable("block capture in lambda");
+  }
+  llvm_unreachable("Unknown implicit capture style");
+}
+
 ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc,
                                  LambdaScopeInfo *LSI) {
   // Collect information from the lambda scope.
   SmallVector<LambdaCapture, 4> Captures;
   SmallVector<Expr *, 4> CaptureInits;
-  LambdaCaptureDefault CaptureDefault = LCD_None;
-  SourceLocation CaptureDefaultLoc;
+  SourceLocation CaptureDefaultLoc = LSI->CaptureDefaultLoc;
+  LambdaCaptureDefault CaptureDefault =
+      mapImplicitCaptureStyle(LSI->ImpCaptureStyle);
   CXXRecordDecl *Class;
   CXXMethodDecl *CallOperator;
   SourceRange IntroducerRange;
@@ -1553,26 +1570,6 @@ ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc,
       CaptureInits.push_back(Init);
     }
 
-    switch (LSI->ImpCaptureStyle) {
-    case CapturingScopeInfo::ImpCap_None:
-      CaptureDefault = LCD_None;
-      break;
-
-    case CapturingScopeInfo::ImpCap_LambdaByval:
-      CaptureDefault = LCD_ByCopy;
-      break;
-
-    case CapturingScopeInfo::ImpCap_CapturedRegion:
-    case CapturingScopeInfo::ImpCap_LambdaByref:
-      CaptureDefault = LCD_ByRef;
-      break;
-
-    case CapturingScopeInfo::ImpCap_Block:
-      llvm_unreachable("block capture in lambda");
-      break;
-    }
-    CaptureDefaultLoc = LSI->CaptureDefaultLoc;
-
     // C++11 [expr.prim.lambda]p6:
     //   The closure type for a lambda-expression with no lambda-capture
     //   has a public non-virtual non-explicit const conversion function
-- 
2.7.4