From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 2 Oct 2020 21:14:06 +0000 (+0100)
Subject: libstdc++: Change test to work without 64-bit atomics
X-Git-Tag: releases/gcc-10.3.0~592
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a04bd36273c9cedc168b655eb10c16eb96608201;p=thirdparty%2Fgcc.git

libstdc++: Change test to work without 64-bit atomics

This fixes a linker error for older ARM cores without 64-bit atomics.

libstdc++-v3/ChangeLog:

	* testsuite/29_atomics/atomic_float/value_init.cc: Use float
	instead of double so that __atomic_load_8 isn't needed.

(cherry picked from commit 324118378e4e26d9c0f86734af26538491c5c5fc)
---

diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_float/value_init.cc b/libstdc++-v3/testsuite/29_atomics/atomic_float/value_init.cc
index 237c0dd13ed5..98c6b0c7d015 100644
--- a/libstdc++-v3/testsuite/29_atomics/atomic_float/value_init.cc
+++ b/libstdc++-v3/testsuite/29_atomics/atomic_float/value_init.cc
@@ -21,13 +21,13 @@
 #include <atomic>
 #include <testsuite_hooks.h>
 
-constexpr std::atomic<double> a;
+constexpr std::atomic<float> a;
 
 void
 test01()
 {
   VERIFY(a.load() == 0);
-  static_assert(std::is_nothrow_default_constructible_v<std::atomic<double>>);
+  static_assert(std::is_nothrow_default_constructible_v<std::atomic<float>>);
 }
 
 int