From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 30 Jun 2021 20:35:51 +0000 (+0100)
Subject: libstdc++: Make <experimental/simd> depend on C++17
X-Git-Tag: basepoints/gcc-13~6371
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=36adced3b6b7cae17d7b42e4573bd0f4194b1f70;p=thirdparty%2Fgcc.git

libstdc++: Make <experimental/simd> depend on C++17

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* include/experimental/simd: Do not define anything pre-C++17.
---

diff --git a/libstdc++-v3/include/experimental/simd b/libstdc++-v3/include/experimental/simd
index da2d0479cf3b..beccbc14fa54 100644
--- a/libstdc++-v3/include/experimental/simd
+++ b/libstdc++-v3/include/experimental/simd
@@ -33,6 +33,8 @@
 #ifndef _GLIBCXX_EXPERIMENTAL_SIMD
 #define _GLIBCXX_EXPERIMENTAL_SIMD
 
+#if __cplusplus >= 201703L
+
 #define __cpp_lib_experimental_parallel_simd 201803
 
 #pragma GCC diagnostic push
@@ -66,5 +68,6 @@
 
 #pragma GCC diagnostic pop
 
+#endif // C++17
 #endif // _GLIBCXX_EXPERIMENTAL_SIMD
 // vim: ft=cpp