Compile error c++ (GCC) 7.2.1 20170915 (not a constant expression)

[uartie]

With c++ (GCC) 7.2.1 20170915 (i.e. Fedora 27 default GCC version), the following compiler error is generated:

In file included from <snip>/media_driver/agnostic/common/os/mos_context.cpp:28:0:
<snip>/media_driver/linux/common/os/mos_context_specific.h:63:67: error: value ‘18446744073709551615’ of type ‘void*’ is not a constant expression
     constexpr static void* MOS_LINUX_SHM_INVALID       = (void *)-1;
                                                                   ^

[uartie]

This is also the default compiler version on Fedora 26.

On Fedora 25 (which is EOL mid-December 2017), the compiler version is 6.4.1 and this error does not occur.

[ghost]

Same issue with SlackwareLinux /current:

Reading specs from /usr/lib64/gcc/x86_64-slackware-linux/7.2.0/specs
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-slackware-linux/7.2.0/lto-wrapper
Target: x86_64-slackware-linux
Configured with: ../gcc-7.2.0/configure --prefix=/usr --libdir=/usr/lib64 --mandir=/usr/man --infodir=/usr/info --enable-shared --enable-bootstrap --enable-languages=ada,brig,c,c++,fortran,go,lto,objc --enable-threads=posix --enable-checking=release --enable-objc-gc --with-system-zlib --enable-libstdcxx-dual-abi --with-default-libstdcxx-abi=gcc4-compatible --disable-libunwind-exceptions --enable-__cxa_atexit --enable-libssp --enable-lto --disable-install-libiberty --with-gnu-ld --verbose --with-arch-directory=amd64 --disable-gtktest --disable-multilib --target=x86_64-slackware-linux --build=x86_64-slackware-linux --host=x86_64-slackware-linux
Thread model: posix
gcc version 7.2.0 (GCC)

[LuoIvan]

Thanks uartie for comments. Currently intel Linux driver is built against ubuntu 16.04 w/ gcc 5.4. Gcc 7.2 definitely implement stricter check for constant declared as constexpr. Will fix the issue and set up Fedora 26 environment for cross check soon. Please stay tuned.