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Today's Topics:
1. [mingw] #43663: %zd and %td support in attribute format
printf (MinGW Notification List)
----------------------------------------------------------------------
Message: 1
Date: Thu, 20 Jan 2022 19:09:47 +0900
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #43663: %zd and %td support in
attribute format printf
Message-ID:
<[email protected]>
Content-Type: text/plain; charset=UTF-8
#43663: %zd and %td support in attribute format printf
Open Date: 2022-01-20 19:09
Last Update: 2022-01-20 19:09
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/43663
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=43663
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2022-01-20 19:09 Updated by: eric_pouech
* New Ticket "%zd and %td support in attribute format printf" created
---------------------------------------------------------------------
Ticket Status:
Reporter: eric_pouech
Owner: (None)
Type: Issues
Status: Open
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: None
---------------------------------------------------------------------
Ticket details:
sample a.c
#include <stddef.h>
int foo(const char*,...) __attribute__((format(printf, 1, 2)));
int main(void)
{
size_t f = sizeof(size_t);
return foo("%zd\n", f);
}
this simple program, compiled with -Wall warns about unsupported %zd
$ x86_64-w64-mingw32-gcc a.c -Wall
a.c: In function 'main':
a.c:7:22: warning: unknown conversion type character 'z' in format [-Wformat=]
7 | return foo("%zd\n", f);
| ^
$ i686-w64-mingw32-gcc a.c -Wall
a.c: In function 'main':
a.c:7:22: warning: unknown conversion type character 'z' in format [-Wformat=]
7 | return foo("%zd\n", f);
| ^
whereas gcc compiles the snipnet just fine
version info$ x86_64-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/x86_64-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-w64-mingw32/11.2.1/lto-wrapper
Target: x86_64-w64-mingw32
Configured with: ../configure --prefix=/usr --bindir=/usr/bin
--includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info
--datadir=/usr/share --build=x86_64-redhat-linux-gnu
--host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose
--without-newlib --disable-multilib --disable-plugin --with-system-zlib
--disable-nls --without-included-gettext --disable-win32-registry
--enable-languages=c,c++,objc,obj-c++,fortran
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-threads=posix
--with-isl --enable-libgomp --target=x86_64-w64-mingw32
--with-sysroot=/usr/x86_64-w64-mingw32/sys-root
--with-gxx-include-dir=/usr/x86_64-w64-mingw32/sys-root/mingw/include/c++
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.2.1 20210728 (Fedora MinGW 11.2.1-3.fc35) (GCC)
version info$ i686-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/i686-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-w64-mingw32/11.2.1/lto-wrapper
Target: i686-w64-mingw32
Configured with: ../configure --prefix=/usr --bindir=/usr/bin
--includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info
--datadir=/usr/share --build=x86_64-redhat-linux-gnu
--host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose
--without-newlib --disable-multilib --disable-plugin --with-system-zlib
--disable-nls --without-included-gettext --disable-win32-registry
--enable-languages=c,c++,objc,obj-c++,fortran
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-threads=posix
--with-isl --enable-libgomp --target=i686-w64-mingw32
--with-sysroot=/usr/i686-w64-mingw32/sys-root
--with-gxx-include-dir=/usr/i686-w64-mingw32/sys-root/mingw/include/c++
--disable-sjlj-exceptions --with-dwarf2
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.2.1 20210728 (Fedora MinGW 11.2.1-3.fc35) (GCC)
MS compiler supports %zd as the preferred way to print size_t values
(didn't included in the tests, but %td for ptrdiff_t suffers from the same
issues)
--
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/
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URL for this Ticket:
https://osdn.net/projects/mingw/ticket/43663
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=43663
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