Re: [[ noreturn ]]

["Hotmail \(ArbolOne\)" <ArbolOne at hotmail dot ca>]

This is the actual code where the test takes place:
void ascii_all [[ noreturn ]] () {
   uint32_t ASCII_MAX = 255;
   std::wstring a;

   for (uint32_t i = 0; i <= ASCII_MAX; i++) {
       a = i;
       size_t w1/*, w2*/;
       if ( i < 10 ) w1 = 3;
       else w1 = 2;
       wcout << setw( w1 )
             << a
             << setw( 6 )
             << i;
   }
   wcout << L"\nThis are the ASCII character from 33 to 255" << std::endl;
//    wcin.get();
}

------------------------------
I downloaded MinGW-w64 from http://sourceforge.net/projects/mingw-w64/
MinGW-w64 settings:
Version 4.9.2 or later
Architecture: x86_64
Threads: win32
Exception: seh

Please let me know if you need anything else.

Thanks a whole bunch for the help, I really appreciated.








-----Original Message----- 
From: Martin Sebor
Sent: Friday, May 29, 2015 12:43 PM
To: Hotmail (ArbolOne) ; gcc-help Mailing List ; MinGW-64 Mailinglist
Subject: Re: [[ noreturn ]]

On 05/28/2015 08:46 PM, Hotmail (ArbolOne) wrote:
> Hi!
> When using this the [[ noreturn ]] attribute like this: - void f [[
> noreturn ]] (); - I get a warning that reads:
> warning: 'noreturn' function does return
> ( http://www.stroustrup.com/C++11FAQ.html#attributes )
> What can I do to remove this warning?

I don't see a warning for the example with GCC 4.8, 4.9, or
5.1. If you do, it might help if you posted the version of
GCC you're using and the command line options (for example,
like I did below). You could also check Bugzilla for known
noreturn bugs (though I couldn't find anything relevant).

Martin

$ cat t.cpp && g++ -v && g++ -Wall -Wextra -c -pedantic -std=c++11 t.cpp
void f [[ noreturn ]] () { throw "error"; }
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/ppc64-redhat-linux/4.8.3/lto-wrapper
Target: ppc64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap
--enable-shared --enable-threads=posix --enable-checking=release
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto
--enable-plugin --enable-initfini-array --disable-libgcj
--with-isl=/builddir/build/BUILD/gcc-4.8.3-20140911/obj-ppc64-redhat-linux/isl-install
--with-cloog=/builddir/build/BUILD/gcc-4.8.3-20140911/obj-ppc64-redhat-linux/cloog-install
--enable-gnu-indirect-function --enable-secureplt --with-long-double-128
--with-cpu-32=power7 --with-tune-32=power7 --with-cpu-64=power7
--with-tune-64=power7 --build=ppc64-redhat-linux
Thread model: posix
gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC)