[PATCH] Add __cpp_lib_bind_front macro to <version> header

[Jonathan Wakely <jwakely at redhat dot com>]

	* include/std/version (__cpp_lib_bind_front): Add missing macro.

Tested x86_64-linux, committed to trunk. I'll backport t his to
gcc-9-branch too.


This missing macro was found by the following script I used for
testing an installed compiler:

#!/bin/sh

: ${CXX:=$HOME/gcc/latest/bin/g++}

for dialect in c++ gnu++
do
for i in 98 11 14 17 2a;
do
 echo ===$dialect$i===
 echo '#include <bits/stdc++.h>' | $CXX -D_GLIBCXX_VERSION_INCLUDED -E -std=$dialect$i -dD -xc++ - | grep '^[[:blank:]]*#[[:blank:]]*define[[:blank:]]*__cpp_' | sort -u > /tmp/perfilemacros
 echo '#include <version>' | $CXX -E -std=$dialect$i -dD -xc++ - | grep '^[[:blank:]]*#[[:blank:]]*define[[:blank:]]*__cpp_' | sort -u > /tmp/versionmacros
 diff -up /tmp/perfilemacros /tmp/versionmacros
done
done

Attachment: patch.txt
Description: Text document