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What g   flags will make a runtime-sized array on stack cause compiler error?

int size;

cout << "Enter array size: "

cin >> size;

MyObject stack_array[size];

       

g++ -ansi -pedantic -Wall -Wextra -Werror -std=c++0x

       

g++ -v

Using built-in specs.

COLLECT_GCC=g++

COLLECT_LTO_WRAPPER=/usr/lib/i386-linux-gnu/gcc/i686-linux-gnu/4.5.2/lto-wrapper

Target: i686-linux-gnu

Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.5.2-8ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.5 --enable-shared --enable-multiarch --with-multiarch-defaults=i386-linux-gnu --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib/i386-linux-gnu --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib/i386-linux-gnu --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-gold --enable-ld=default --with-plugin-ld=ld.gold --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu

Thread model: posix

gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)

       

test.cpp: In function ‘int main()’:

test.cpp:7:12: warning: ISO C++ forbids variable length array ‘arry’ [-Wvla]

       

> g++ -std=c++0x -Wall -Werror -pedantic -o vla.exe vla.cpp

vla.cpp: In function 'int main()':

vla.cpp:3:19: error: ISO C++ forbids variable length array 'array' [-Werror=vla]

vla.cpp:3:9: error: unused variable 'array' [-Werror=unused-variable]

cc1plus.exe: all warnings being treated as errors