[Sema] Add warning for unused lambda captures
Summary:
Warn when a lambda explicitly captures something that is not used in its body.
The warning is part of -Wunused and can be enabled with -Wunused-lambda-capture.
Reviewers: rsmith, arphaman, jbcoe, aaron.ballman
Subscribers: Quuxplusone, arphaman, cfe-commits
Differential Revision: https://reviews.llvm.org/D28467
llvm-svn: 291905
diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p13.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p13.cpp
index 8bb707e..b55beb7 100644
--- a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p13.cpp
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p13.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++11 %s -Wunused -verify
+// RUN: %clang_cc1 -std=c++11 %s -Wunused -Wno-unused-lambda-capture -verify
void f2() {
int i = 1;