This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

[PATCH] PR libstdc++/82262 fix std::hash<std::optional<const T>>

From: Jonathan Wakely <jwakely at redhat dot com>
To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Wed, 20 Sep 2017 14:24:37 +0100
Subject: [PATCH] PR libstdc++/82262 fix std::hash<std::optional<const T>>
Authentication-results: sourceware.org; auth=none
Authentication-results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com
Authentication-results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=jwakely at redhat dot com
Dmarc-filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 7A4152AD63

The std::hash specialization for std::optional was missing a
remove_const_t so tried to use a disabled hash specialization.

	PR libstdc++/82262
	* include/std/optional (__optional_hash_call_base): Add template
	parameter for remove_const_t<_Tp> and use it consistently.
	* testsuite/20_util/optional/hash.cc: Test optional<const T>.

Tested powerpc64le-linux, committing to trunk and gcc-7-branch.

Attachment: patch.txt
Description: Text document

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]