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Today's Topics:
1. [mingw] #40315: c++17 std::aligned_alloc (MinGW Notification List)
2. [mingw] #40318: Bad email (MinGW Notification List)
3. [mingw] #40318: Bad email (MinGW Notification List)
----------------------------------------------------------------------
Message: 1
Date: Sat, 11 Apr 2020 17:18:23 +0100
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #40315: c++17 std::aligned_alloc
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8
#40315: c++17 std::aligned_alloc
Open Date: 2020-04-10 05:55
Last Update: 2020-04-11 17:18
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/40315
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=40315
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2020-04-11 17:18 Updated by: keith
Comment:
Reply To drakbar
I am not sure if this helps, but it seems that GCC version 7.4 implemented
this.
Likely when they implemented ISO-C11, or maybe just ISO-C++17 support; (I
erroneously referred to ISO-C99, but aligned_alloc() support was added later).
However, that GCC support was likely restricted to POSIX.1 compliant platforms,
which windows is not.
Now I realize that a GCC in a browser is different than a GCC on windows,
but I guess I am a bit confused.
Huh? GCC doesn't (normally) run in a browser; it runs on a variety of host
platforms, but primarily those which are POSIX.1 compliant.
I was under the impression that upstream GCC wouldn't be concerned if it
works on windows.
Upstream has supported mingw32 for years, but never as a primary target. For
GCC-3.4.5, it was a secondary target; today it may have been demoted to
tertiary. However, that's bye-the-bye: a MinGW.org release is no more than our
binary build from upstream source — with a few local patches — but
aligned_alloc() is difficult to implement, because Microsoft's underlying APIs
are incompatible with its standardized requirements; (see the other ticket, to
which I referred you). Welcome to the world of programming on windows; you
often have to work around Microsoft's violation of standards. In the case of
aligned_alloc(), you may need to consider _aligned_malloc(), (which you then
need to pair with _aligned_free()).
---------------------------------------------------------------------
Ticket Status:
Reporter: drakbar
Owner: (None)
Type: Issues
Status: Open
Priority: 5 - Medium
MileStone: (None)
Component: GCC
Severity: 5 - Medium
Resolution: None
---------------------------------------------------------------------
Ticket details:
According to cppreference, the function std::aligned_alloc is apart of C++17.
When trying to compile the example code found at that page, the following
compilation error occurs:
src code
1. #include <cstdio>
2. #include <cstdlib>
3.
4. int main()
5. {
6. int* p1 = static_cast<int*>(std::malloc(10*sizeof *p1));
7. std::printf("default-aligned address: %p\n", static_cast<void*>(p1));
8. std::free(p1);
9.
10. int* p2 = static_cast<int*>(std::aligned_alloc(1024, 1024));
11. std::printf("1024-byte aligned address: %p\n", static_cast<void*>(p2));
12. std::free(p2);
13. }
compilation output
$g++ -std=c++17 alignment.cpp -o main
alignment.cpp: In function 'int main()':
alignment.cpp:10:38: error: 'aligned_alloc' is not a member of 'std'
10 | int* p2 = static_cast<int*>(std::aligned_alloc(1024, 1024));
gcc version
Target: x86_64-w64-mingw32
Configured with: ../gcc-9.3.0/configure --prefix=/mingw64
--with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32
--host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32
--with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include
--libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64
--with-tune=generic --enable-languages=c,lto,c++,fortran,ada,objc,obj-c++
--enable-shared --enable-static --enable-libatomic --enable-threads=posix
--enable-graphite --enable-fully-dynamic-string
--enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes
--disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check
--enable-lto --enable-libgomp --disable-multilib --enable-checking=release
--disable-rpath --disable-win32-registry --disable-nls --disable-werror
--disable-symvers --enable-plugin --with-libiconv --with-system-zlib
--with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64
--with-isl=/mingw64 --with-pkgversion='Rev1, Built by MSYS2 project'
--with-bugurl=https://sourceforge.net/projects/msys2 --with-gnu-as --with-gnu-ld
Thread model: posix
gcc version 9.3.0 (Rev1, Built by MSYS2 project)
platform
Windows 10 Build: 18362.720
linker version
GNU ld (GNU Binutils) 2.34
mingw version
not quite sure which number is the relevant one in _mingw.h
??
build environment
I have tested using both windows command prompt and the msys-w64 shell, and
both yield the same result
MINGW64_NT-10.0-18362 3.0.7-338.x86_64 2019-07-11 10:58 UTC x86_64 Msys
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------------------------------
Message: 2
Date: Sat, 11 Apr 2020 17:37:06 +0100
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #40318: Bad email
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8
#40318: Bad email
Open Date: 2020-04-11 09:33
Last Update: 2020-04-11 17:37
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/40318
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=40318
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2020-04-11 17:37 Updated by: keith
* Status Update from Open to Closed
* Resolution Update from None to Invalid
Comment:
Reply To okolo
I wrote a letter to this email using mail.ru.
From what subscriber address? (I can see no subscriber address, with an
@mail.ru domain). Sorry, but if you don't subscribe, you aren't permitted to
post.
---------------------------------------------------------------------
Ticket Status:
Reporter: okolo
Owner: (None)
Type: Issues
Status: Closed
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: Invalid
---------------------------------------------------------------------
Ticket details:
SMTP error from remote mail server after RCPT TO:<[email protected]>:
host lists.osdn.me 202.221.179.24: 554 5.7.1 Sender address rejected: Access
denied
--
Ticket information of MinGW - Minimalist GNU for Windows project
MinGW - Minimalist GNU for Windows Project is hosted on OSDN
Project URL: https://osdn.net/projects/mingw/
OSDN: https://osdn.net
URL for this Ticket:
https://osdn.net/projects/mingw/ticket/40318
RSS feed for this Ticket:
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------------------------------
Message: 3
Date: Sun, 12 Apr 2020 03:34:58 +0900
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #40318: Bad email
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8
#40318: Bad email
Open Date: 2020-04-11 17:33
Last Update: 2020-04-12 03:34
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/40318
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=40318
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2020-04-12 03:34 Updated by: okolo
Comment:
I was not included in the newsletter.
---------------------------------------------------------------------
Ticket Status:
Reporter: okolo
Owner: (None)
Type: Issues
Status: Closed
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: Invalid
---------------------------------------------------------------------
Ticket details:
SMTP error from remote mail server after RCPT TO:<[email protected]>:
host lists.osdn.me 202.221.179.24: 554 5.7.1 Sender address rejected: Access
denied
--
Ticket information of MinGW - Minimalist GNU for Windows project
MinGW - Minimalist GNU for Windows Project is hosted on OSDN
Project URL: https://osdn.net/projects/mingw/
OSDN: https://osdn.net
URL for this Ticket:
https://osdn.net/projects/mingw/ticket/40318
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