Re: misusing placement new OR possible cxx bug

[Andrew Thomas Pinski <pinskia at gmail dot com>]

Sent from my iPhone

On Oct 13, 2008, at 9:10 AM, "Ralovich, KristÃf" <kristof.ralovich@gmail.co 
m> wrote:

> Hi GCC developers,
>
> I have a c++ source, that I think is wrong (wrt the c++ standard), but
> accepted by g++ (and msvc too)!
>
> ----------------------------------------
>
> int
> main(int argc, char** argv)
> {
>  char* d = new char[256, 256];
>  return 0;
> }
>
> ----------------------------------------
>
> Is this the use of 'placement new' in weird syntax I didn't know
> before, or is this code wrong and accidentally accepted by gcc? In the
> former case, please correct me and sorry for the noise!

This is neither.  The code is using the comma operator.

Thanks,
Andrew Pinski


> Thanks,
> Kristof
>
>
> PS.: my 'g++ -v' says:
>
> Using built-in specs.
> Target: i486-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Debian
> 4.3.2-1' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs
> --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
> --enable-shared --with-system-zlib --libexecdir=/usr/lib
> --without-included-gettext --enable-threads=posix --enable-nls
> --with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3
> --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc
> --enable-mpfr --enable-targets=all --enable-cld
> --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu
> --target=i486-linux-gnu
> Thread model: posix
> gcc version 4.3.2 (Debian 4.3.2-1)
>
> PS2.: Please CC me!