configure:4036: c++ -o conftest -O2 -pipe -O3 -fno-strict-aliasing -fno-omit-frame-pointer -march=native -fstack-protector    -fstack-protector conftest.cc  >&5
In file included from conftest.cc:32:
In file included from /usr/include/c++/v1/stdlib.h:94:
/usr/include/stdlib.h:97:1: error: function declared '[[noreturn]]' after its first declaration
_Noreturn void   exit(int);
^
/usr/include/sys/cdefs.h:280:22: note: expanded from macro '_Noreturn'
 #define _Noreturn               [[noreturn]]
                                   ^
conftest.cc:11:6: note: declaration missing '[[noreturn]]' attribute is here
void exit (int);
     ^
[...]
configure:4053: error: cannot compute sizeof (char), 77

samples.cpp:80:2: error: constant expression evaluates to 128 which cannot be narrowed to type 'sbyte' (aka 'signed char') [-Wc++11-narrowing]
        0x80,0x91,0xa2,0xb3,0xc4,0xd5,0xe6,0xf7,
        ^~~~
samples.cpp:80:2: note: insert an explicit cast to silence this issue
        0x80,0x91,0xa2,0xb3,0xc4,0xd5,0xe6,0xf7,
        ^~~~
        static_cast<sbyte>( )

PR:		224947
Reported by:	pkg-fallout (blocks 8 ports)
Submitted by:	tijl (autoreconf)
Approved by:	portmgr blanket