From 0c0d2a4cf0fbad6cb92dcf666b24fde8fac8b104 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Thu, 13 Oct 2016 15:42:09 +0100
Subject: Replace non-constexpr decrement in std::chrono::floor

	* include/std/chrono (floor): Replace non-constexpr operation.
	* testsuite/20_util/duration_cast/rounding.cc: Test conversion to
	durations with floating pointer representations.

From-SVN: r241122
---
 libstdc++-v3/include/std/chrono | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libstdc++-v3/include/std')

diff --git a/libstdc++-v3/include/std/chrono b/libstdc++-v3/include/std/chrono
index cb8c876..ceae7f8 100644
--- a/libstdc++-v3/include/std/chrono
+++ b/libstdc++-v3/include/std/chrono
@@ -224,7 +224,7 @@ _GLIBCXX_END_NAMESPACE_VERSION
       {
 	auto __to = chrono::duration_cast<_ToDur>(__d);
 	if (__to > __d)
-	  --__to;
+	  return __to - _ToDur{1};
 	return __to;
       }
 
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