From da40a69c9ef8784d37c968ac37daf6f8883d2755 Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Sun, 13 Dec 2020 10:41:06 +0000
Subject: [PATCH] vec: Silence clang warning

I noticed during compatibility testing that clang warns that this
operator won't be implicitly const in C++14 onwards.

gcc/
	* vec.h (vnull::operator vec<T, A, L>): Make const.
---
 gcc/vec.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/vec.h b/gcc/vec.h
index 09166f1bce6..31574b49c25 100644
--- a/gcc/vec.h
+++ b/gcc/vec.h
@@ -550,7 +550,7 @@ vec_copy_construct (T *dst, const T *src, unsigned n)
 struct vnull
 {
   template <typename T, typename A, typename L>
-  CONSTEXPR operator vec<T, A, L> () { return vec<T, A, L>(); }
+  CONSTEXPR operator vec<T, A, L> () const { return vec<T, A, L>(); }
 };
 extern vnull vNULL;
 
-- 
2.30.2