From 046ba5b66faea26fb0ef36b48a07e9c0fc08970c Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 18 Feb 2016 06:49:31 +0000
Subject: Sema: provide an extension warning for enable_if

Clang implements an enable_if attribute as an extension.  Hook up `-Wpedantic`
to issue an extension usage warning when __enable_if__ is used.

llvm-svn: 261192
---
 clang/lib/Sema/SemaDeclAttr.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'clang/lib/Sema/SemaDeclAttr.cpp')

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index bfb82ac1388..d2db4b92849 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -804,6 +804,8 @@ static void handleLocksExcludedAttr(Sema &S, Decl *D,
 }
 
 static void handleEnableIfAttr(Sema &S, Decl *D, const AttributeList &Attr) {
+  S.Diag(Attr.getLoc(), diag::ext_clang_enable_if);
+
   Expr *Cond = Attr.getArgAsExpr(0);
   if (!Cond->isTypeDependent()) {
     ExprResult Converted = S.PerformContextuallyConvertToBool(Cond);
-- 
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