From: John McCall <rjmccall@apple.com>
Date: Tue, 13 Mar 2012 01:10:51 +0000 (+0000)
Subject: Make the error about assigning to lambda-captured variables
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=23dde82d9043d404ee506880796b761bfec93d0d;p=clang

Make the error about assigning to lambda-captured variables
clearer, and mention the existence of mutable lambdas.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152598 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index bdad36a982..d859f37ad0 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -4388,7 +4388,7 @@ def err_typecheck_duplicate_vector_components_not_mlvalue : Error<
 def err_block_decl_ref_not_modifiable_lvalue : Error<
   "variable is not assignable (missing __block type specifier)">;
 def err_lambda_decl_ref_not_modifiable_lvalue : Error<
-  "variable is not assignable (captured by copy)">;
+  "cannot assign to a variable captured by copy in a non-mutable lambda">;
 def err_typecheck_call_not_function : Error<
   "called object type %0 is not a function or function pointer">;
 def err_call_incomplete_return : Error<
diff --git a/test/SemaCXX/lambda-expressions.cpp b/test/SemaCXX/lambda-expressions.cpp
index 80ba0a1d03..e91dee92ed 100644
--- a/test/SemaCXX/lambda-expressions.cpp
+++ b/test/SemaCXX/lambda-expressions.cpp
@@ -144,7 +144,7 @@ namespace ModifyingCapture {
   void test() {
     int n = 0;
     [=] {
-      n = 1; // expected-error {{variable is not assignable (captured by copy)}}
+      n = 1; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
     };
   }
 }