Sema: Don't emit a warning when __func__ is used in a lambda outside of a function.

Fixes PR14518.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169510 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 2 deletions

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 67b1a7a764..7656d9ee66 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -2571,8 +2571,14 @@ ExprResult Sema::ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind) {
   // string.
 
   Decl *currentDecl = getCurFunctionOrMethodDecl();
-  if (!currentDecl && getCurBlock())
-    currentDecl = getCurBlock()->TheDecl;
+  // Blocks and lambdas can occur at global scope. Don't emit a warning.
+  if (!currentDecl) {
+    if (const BlockScopeInfo *BSI = getCurBlock())
+      currentDecl = BSI->TheDecl;
+    else if (const LambdaScopeInfo *LSI = getCurLambda())
+      currentDecl = LSI->CallOperator;
+  }
+
   if (!currentDecl) {
     Diag(Loc, diag::ext_predef_outside_function);
     currentDecl = Context.getTranslationUnitDecl();