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* [Bug libstdc++/59167] New: Add a specialization for std::hash<__gnu_debug::string>
@ 2013-11-18 8:26 bmerry at gmail dot com
2015-04-09 15:04 ` [Bug libstdc++/59167] " redi at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: bmerry at gmail dot com @ 2013-11-18 8:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59167
Bug ID: 59167
Summary: Add a specialization for
std::hash<__gnu_debug::string>
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: bmerry at gmail dot com
I have code for which I am explicitly selecting debug containers from the
__gnu_debug namespace (I'm not using -D_GLIBCXX_DEBUG since it breaks the ABI
with Boost and I don't want to require people to rebuild Boost to use a debug
build of my code).
This mostly works, but when I try to use an unordered_map with
__gnu_debug::string as the key type I get errors because std::hash hasn't been
specialized for it. I can write my own specialization, but it would be nice if
the library just provided it.
Obviously the other variants (wstring, u16string, u32string should be handled
too).
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug libstdc++/59167] Add a specialization for std::hash<__gnu_debug::string>
2013-11-18 8:26 [Bug libstdc++/59167] New: Add a specialization for std::hash<__gnu_debug::string> bmerry at gmail dot com
@ 2015-04-09 15:04 ` redi at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: redi at gcc dot gnu.org @ 2015-04-09 15:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59167
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-04-09
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
#include <debug/string>
auto h = std::hash<__gnu_debug::string>{}({});
hh.cc:3:41: error: invalid use of incomplete type ‘struct
std::hash<__gnu_debug::basic_string<char> >’
auto h = std::hash<__gnu_debug::string>{}({});
^
In file included from
/home/jwakely/gcc/5/include/c++/5.0.0/bits/basic_string.h:5466:0,
from /home/jwakely/gcc/5/include/c++/5.0.0/string:52,
from /home/jwakely/gcc/5/include/c++/5.0.0/debug/string:32,
from hh.cc:1:
/home/jwakely/gcc/5/include/c++/5.0.0/bits/functional_hash.h:58:12: note:
declaration of ‘struct std::hash<__gnu_debug::basic_string<char> >’
struct hash;
^
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/65690] [5 Regression] typedef alignment lost since r219705
Date: Thu, 09 Apr 2015 15:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide690
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Apr 9 15:06:56 2015
New Revision: 221952
URL: https://gcc.gnu.org/viewcvs?rev"1952&root=gcc&view=rev
Log:
PR c++/65690
* tree.c (build_cplus_array_type): Layout type before variants are
set, but copy over TYPE_SIZE and TYPE_SIZE_UNIT from the main
variant.
* c-c++-common/attr-aligned-1.c: New test.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/tree.c
trunk/gcc/testsuite/ChangeLog
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2013-11-18 8:26 [Bug libstdc++/59167] New: Add a specialization for std::hash<__gnu_debug::string> bmerry at gmail dot com
2015-04-09 15:04 ` [Bug libstdc++/59167] " redi at gcc dot gnu.org
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